Select Your Ride

1
2
3

PRO CIRCUIT

PRO CIRCUIT

PRO CIRCUIT

Pro Circuit Exhaust Systems and Performance Parts at JJ Motorsports

Pro Circuit, established in the late 1970s by Mitch Payton, is a leading name in the motocross and off-road racing industry. The company focuses on providing superior aftermarket exhaust systems, suspension components, and engine performance kits to enhance motorcycle performance for professional racers and casual riders alike. With a commitment to excellence and innovation, Pro Circuit has grown to become a trusted brand for dirt bike enthusiasts worldwide.

At JJ Motorsports, we offer a wide selection of Pro Circuit products to optimize your dirt bike's performance. Popular items include the Ti-6 Exhaust System for Honda CRF450R, engineered from titanium for lightweight durability and increased horsepower, the Ti-6 Dual Exhaust System for Kawasaki KX450 with a carbon fiber end cap for enhanced power and torque, and the T-6 Exhaust System for Honda CRF110F featuring stainless steel construction and a spark arrestor. Other favorites are the T-6 Exhaust System for Honda CRF250R designed for reliable power output, the Works Pipe for Yamaha YZ250 with a raw carbon steel finish for superior performance, and the T-6 Stainless Steel Exhaust System for KTM 250 SX-F offering hassle-free installation.

Pro Circuit products provide significant benefits such as increased horsepower, torque, and durability, along with reduced weight and improved sound compliance for off-road use. Key features include high-quality materials like titanium, stainless steel, and carbon fiber, precise fitment for models like Honda CRF series, Yamaha YZ, Kawasaki KX, and KTM SX-F, and designs that meet AMA/FIM regulations, making them ideal for motocross and trail riding.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Pro Circuit 304 Silencer for KTM 300 XC 2011-2016 1051130

    Pro Circuit 304 Silencer for KTM 300 XC 2011-2016 1051130

    PRO CIRCUIT

    $205.95
    Two-stroke performance demands a silencer that doesn't compromise power for compliance—the Pro Circuit 304 delivers both. This purpose-built exhaust component extracts real gains in throttle response...
    18211323
    SKU:
    18211323
    Availability:
    Ships Same Business Day
    Weight:
    3.51 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    UNITS:
    EACH
    STYLE:
    ROUND
    MUFFLER COLOR/FINISH:
    BRUSHED
    MUFFLER MATERIAL:
    6061 T6 ALUMINUM
    PRODUCT NAME:
    SILENCER
    MODEL:
    304
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    Qty in Cart: 0
    Quantity:
    Price:
    $205.95
    Subtotal:
  • Pro Circuit 304 Silencer for KTM 65 SX 2016-2023 1051665

    Pro Circuit 304 Silencer for KTM 65 SX 2016-2023 1051665

    PRO CIRCUIT

    $205.95
    If you're running a KTM 65 SX and want measurable gains in throttle response and mid-to-high RPM power, the Pro Circuit 304 Silencer delivers real performance improvements without sacrificing...
    18211770
    SKU:
    18211770
    Availability:
    Ships Same Business Day
    Weight:
    1.65 LBS
    UNITS:
    EACH
    MUFFLER COLOR/FINISH:
    BRUSHED
    PRODUCT NAME:
    SILENCER
    STYLE:
    ROUND
    MODEL:
    304
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER MATERIAL:
    6061 T6 ALUMINUM
    $205.95
    Qty in Cart: 0
    Quantity:
    Price:
    $205.95
    Subtotal:
  • Pro Circuit Monster Beanie Black 2025 PC08403-0200

    Pro Circuit Monster Beanie Black 2025 PC08403-0200

    PRO CIRCUIT

    $28.50
    When you're spending long hours in the garage, at the track, or working in the shop during cold months, you need reliable headwear that won't distract you. The Pro Circuit Monster Beanie delivers...
    25010944
    SKU:
    25010944
    Availability:
    Ships Same Business Day
    Weight:
    0.18 LBS
    BASE COLOR:
    BLACK
    MATERIAL:
    TEXTILE
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    PRODUCT NAME:
    BEANIE
    RIDING STYLE:
    UTV
    GENDER:
    UNISEX
    SIZE:
    ONE SIZE
    UNITS:
    EACH
    $28.50
    Qty in Cart: 0
    Quantity:
    Price:
    $28.50
    Subtotal:
  • Pro Circuit Aluminum Throttle Tube for Yamaha YZ250F 2014-2018 and Suzuki RM-Z250 2007-2020 TB-07

    Pro Circuit Aluminum Throttle Tube for Yamaha YZ250F 2014-2018 and Suzuki RM-Z250 2007-2020 TB-07

    PRO CIRCUIT

    $79.95
    Stock plastic throttle tubes wear quickly and develop sticky spots that compromise your throttle control—especially under race conditions. The Pro Circuit Aluminum Throttle Tube replaces that weak...
    06320233
    SKU:
    06320233
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    BASE COLOR:
    BLACK
    MATERIAL:
    ALUMINUM
    STYLE:
    TWIST THROTTLE
    COLOR/FINISH:
    BLACK
    FOR HANDLEBAR DIAMETER IMPERIAL:
    7/8'
    PRODUCT NAME:
    TUBE
    TYPE:
    THROTTLE
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    $79.95
    Qty in Cart: 0
    Quantity:
    Price:
    $79.95
    Subtotal:
  • Pro Circuit Throttle Tube Aluminum KLX110 2010-2020 TB-13

    Pro Circuit Throttle Tube Aluminum KLX110 2010-2020 TB-13

    PRO CIRCUIT

    $79.95
    Stock plastic throttle tubes are prone to cracking and binding, especially under the demands of aggressive riding. The Pro Circuit TB-13 replaces that weak point with CNC-machined aluminum and a...
    06320864
    SKU:
    06320864
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    COLOR/FINISH:
    BLACK
    FOR HANDLEBAR DIAMETER IMPERIAL:
    7/8'
    PRODUCT NAME:
    TUBE
    STYLE:
    TWIST THROTTLE
    TYPE:
    THROTTLE
    RIDING STYLE:
    OFF-ROAD
    BASE COLOR:
    BLACK
    MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    $79.95
    Qty in Cart: 0
    Quantity:
    Price:
    $79.95
    Subtotal:
  • Pro Circuit Throttle Tube Aluminum CRF250R 2018-2025 TB-05-A

    Pro Circuit Throttle Tube Aluminum CRF250R 2018-2025 TB-05-A

    PRO CIRCUIT

    $79.95
    Stock throttle tubes wear prematurely and develop sloppy play that compromises throttle control—exactly what you don't want when you're pushing your CRF250R to its limits. The Pro Circuit TB-05-A...
    06320856
    SKU:
    06320856
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    TUBE
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    TWIST THROTTLE
    FOR HANDLEBAR DIAMETER IMPERIAL:
    7/8'
    MATERIAL:
    ALUMINUM
    TYPE:
    THROTTLE
    BASE COLOR:
    BLACK
    UNITS:
    EACH
    $79.95
    Qty in Cart: 0
    Quantity:
    Price:
    $79.95
    Subtotal:
  • Pro Circuit Throttle Tube 350 SX-F 2016-2018 TB-12

    Pro Circuit Throttle Tube 350 SX-F 2016-2018 TB-12

    PRO CIRCUIT

    $93.95
    Stock throttle tubes wear quickly under aggressive riding and introduce slop that compromises throttle response. The Pro Circuit TB-12 replaces that plastic weakness with precision-engineered...
    06320788
    SKU:
    06320788
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    FOR HANDLEBAR DIAMETER IMPERIAL:
    7/8'
    PRODUCT NAME:
    TUBE
    STYLE:
    TWIST THROTTLE
    TYPE:
    THROTTLE
    BASE COLOR:
    BLACK
    MATERIAL:
    ALUMINUM
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    $93.95
    Qty in Cart: 0
    Quantity:
    Price:
    $93.95
    Subtotal:
  • Pro Circuit Clutch Lever Black Honda CR80R 1991-2003 PCCL04-01-048

    Pro Circuit Clutch Lever Black Honda CR80R 1991-2003 PCCL04-01-048

    PRO CIRCUIT

    $29.95
    Precise clutch control separates podium finishes from mid-pack rides, especially on a CR80R where every throttle transition counts. The Pro Circuit Clutch Lever delivers direct, consistent actuation...
    06130310
    SKU:
    06130310
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MODEL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    UNITS:
    EACH
    ACTUATION:
    MECHANICAL
    MATERIAL:
    ALUMINUM
    TYPE:
    CUSTOM REPLACEMENT
    COLOR/FINISH:
    BLACK
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    LEVER
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Clutch Lever Black Honda CR125R CR250R CRF250R CRF450R 2004-2006 PCCL04-01-049 Pro Circuit Clutch Lever Black Honda CR125R CR250R CRF250R CRF450R 2004-2006 PCCL04-01-049

    Pro Circuit Clutch Lever Black Honda CR125R CR250R CRF250R CRF450R 2004-2006 PCCL04-01-049

    PRO CIRCUIT

    $29.95
    A worn or poorly-performing clutch lever directly impacts your control and confidence in the saddle—whether you're pushing hard on the track or navigating technical terrain. The Pro Circuit Clutch...
    06130311
    SKU:
    06130311
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    MODEL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    ACTUATION:
    MECHANICAL
    TYPE:
    CUSTOM REPLACEMENT
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    LEVER
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Clutch Lever Black Honda CRF450R 2007-2017 PCCL04-01-050

    Pro Circuit Clutch Lever Black Honda CRF450R 2007-2017 PCCL04-01-050

    PRO CIRCUIT

    $19.95
    A worn or poorly-designed clutch lever compromises your control and comfort, especially during aggressive trail riding or track sessions on your CRF450R. The PRO CIRCUIT Clutch Lever delivers a more...
    06130312
    SKU:
    06130312
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    MODEL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    ACTUATION:
    MECHANICAL
    TYPE:
    CUSTOM REPLACEMENT
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    LEVER
    $19.95
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95
    Subtotal:
  • Pro Circuit Clutch Lever Black Kawasaki KX100 1998-2021 PCCL04-01-051 Pro Circuit Clutch Lever Black Kawasaki KX100 1998-2021 PCCL04-01-051

    Pro Circuit Clutch Lever Black Kawasaki KX100 1998-2021 PCCL04-01-051

    PRO CIRCUIT

    $19.95
    A quality clutch lever is critical for precise throttle control and rider comfort during aggressive riding—especially on high-revving two-strokes like the KX100. The Pro Circuit lever delivers the...
    06130313
    SKU:
    06130313
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    COLOR/FINISH:
    BLACK
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    LEVER
    RIDING STYLE:
    OFF-ROAD
    ACTUATION:
    MECHANICAL
    MATERIAL:
    ALUMINUM
    MODEL:
    FORGED
    TYPE:
    CLUTCH
    TYPE:
    CUSTOM REPLACEMENT
    UNITS:
    EACH
    $19.95
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95
    Subtotal:
  • Pro Circuit Clutch Lever Black 2003-2006 Kawasaki KLX125 PCCL04-01-053

    Pro Circuit Clutch Lever Black 2003-2006 Kawasaki KLX125 PCCL04-01-053

    PRO CIRCUIT

    $29.95
    If you're running a 2003-2006 Kawasaki KLX125, the stock clutch lever is a compromise—mushy engagement, vague feedback, and durability that doesn't match your riding intensity. The Pro Circuit Clutch...
    06130315
    SKU:
    06130315
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    LEVER
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    ACTUATION:
    MECHANICAL
    MODEL:
    FORGED
    TYPE:
    CLUTCH
    TYPE:
    CUSTOM REPLACEMENT
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Brake Lever Black Kawasaki KX85 2001-2025 PCBL03-01-015 Pro Circuit Brake Lever Black Kawasaki KX85 2001-2025 PCBL03-01-015

    Pro Circuit Brake Lever Black Kawasaki KX85 2001-2025 PCBL03-01-015

    PRO CIRCUIT

    $34.95
    The Pro Circuit Brake Lever gives you the direct feedback and control you need for consistent braking performance on your KX85. Factory levers wear quickly under aggressive riding, causing mushiness...
    06140275
    SKU:
    06140275
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MODEL:
    FORGED
    RIDING STYLE:
    OFF-ROAD
    ACTUATION:
    MECHANICAL
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    TYPE:
    BRAKE
    UNITS:
    EACH
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    LEVER
    $34.95
    Qty in Cart: 0
    Quantity:
    Price:
    $34.95
    Subtotal:
  • Pro Circuit Stainless Steel Power Valve for Kawasaki KX85 2002-2013 PVK01085

    Pro Circuit Stainless Steel Power Valve for Kawasaki KX85 2002-2013 PVK01085

    PRO CIRCUIT

    $229.95
    If you're running a KX85 and want measurable gains in low-end acceleration without sacrificing top-end power, a quality power valve upgrade is one of the highest-ROI modifications available. The Pro...
    09310477
    SKU:
    09310477
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    PRODUCT NAME:
    POWER VALVE
    $229.95
    Qty in Cart: 0
    Quantity:
    Price:
    $229.95
    Subtotal:
  • PRO CIRCUIT Pro Circuit Ti-6 Exhaust System for 2024 Kawasaki KX450 0322445FP

    Pro Circuit Ti-6 Exhaust System for 2024 Kawasaki KX450 0322445FP

    PRO CIRCUIT

    $1,250.95
    The Pro Circuit Ti-6 Exhaust System delivers measurable gains in peak power and mid-range torque while shedding unnecessary weight from your 2024 KX450—critical advantages whether you're chasing lap...
    18300397
    SKU:
    18300397
    Availability:
    Ships Same Business Day
    Weight:
    21.35 LBS
    $1,250.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,250.95
    Subtotal:
  • Pro Circuit T-6 Exhaust System Stainless Steel 2022-2025 KTM 250 SX-F 0152225G

    Pro Circuit T-6 Exhaust System Stainless Steel 2022-2025 KTM 250 SX-F 0152225G

    PRO CIRCUIT

    $1,102.95
    The Pro Circuit T-6 exhaust system is engineered to unlock measurable gains in horsepower and torque while shedding unnecessary weight from your 2022-2025 KTM 250 SX-F. Optimized flow dynamics and...
    18202019
    SKU:
    18202019
    Availability:
    Ships Same Business Day
    Weight:
    12.90 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $1,102.95
    Subtotal:
  • Pro Circuit T-6 Slip-On Muffler for 2024-2025 Kawasaki KX450F 0152225A

    Pro Circuit T-6 Slip-On Muffler for 2024-2025 Kawasaki KX450F 0152225A

    PRO CIRCUIT

    $779.95
    The Pro Circuit T-6 Slip-On Muffler replaces restrictive factory exhaust with a precision-engineered system that improves throttle response and mid-range power while delivering a distinctive,...
    18212068
    SKU:
    18212068
    Availability:
    Ships Same Business Day
    Weight:
    11.00 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $779.95
    Subtotal:
  • Pro Circuit Patch T-Shirt Gray Small 6411560-010

    Pro Circuit Patch T-Shirt Gray Small 6411560-010

    PRO CIRCUIT

    $29.95
    Show your motorsports allegiance without sacrificing everyday comfort. This Pro Circuit x Monster Energy collaboration tee combines authentic brand graphics with quality construction, making it an...
    303013427
    SKU:
    303013427
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Team Monster T-Shirt Black Large PC0126-0230

    Pro Circuit Team Monster T-Shirt Black Large PC0126-0230

    PRO CIRCUIT

    $29.95
    Whether you're trackside or off-duty, the PRO CIRCUIT Team Monster T-Shirt delivers the comfort and durability you need for life in the motorsports world. Built from premium 100% cotton, this piece...
    30302783
    SKU:
    30302783
    Availability:
    Ships Same Business Day
    Weight:
    0.54 LBS
    MODEL:
    TEAM MONSTER
    RIDING STYLE:
    ATV
    SIZE:
    L
    STYLE:
    CREWNECK
    UNITS:
    EACH
    GENDER:
    MEN'S
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    COLOR:
    LIME
    COLOR:
    WHITE
    BASE COLOR:
    BLACK
    COLOR:
    BLACK
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    SIZE GROUP:
    ADULT
    STYLE:
    SHORT-SLEEVE
    TYPE:
    CASUAL
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Piston T-Shirt Black Medium 6431740-020 Pro Circuit Piston T-Shirt Black Medium 6431740-020

    Pro Circuit Piston T-Shirt Black Medium 6431740-020

    PRO CIRCUIT

    $29.95
    Show your commitment to motorsports beyond the track with apparel that reflects your passion for precision engineering and racing culture. The Pro Circuit Piston T-Shirt delivers authentic brand...
    303019959
    SKU:
    303019959
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    BASE COLOR:
    BLACK
    SIZE GROUP:
    ADULT
    STYLE:
    CREWNECK
    COLOR:
    BLACK
    FIT:
    REGULAR
    GENDER:
    MEN'S
    GRAPHIC:
    PISTON
    MATERIAL:
    COTTON
    RIDING STYLE:
    OFF-ROAD
    SIZE:
    M
    STYLE:
    SHORT-SLEEVE
    TYPE:
    CASUAL
    PRODUCT NAME:
    T-SHIRT
    COLOR:
    WHITE
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Piston T-Shirt Black XL 6431740-040 Pro Circuit Piston T-Shirt Black XL 6431740-040

    Pro Circuit Piston T-Shirt Black XL 6431740-040

    PRO CIRCUIT

    $29.95
    Whether you're heading to the track or representing the brand off-duty, the Pro Circuit Piston T-Shirt delivers the comfort and durability you need for everyday wear. Built from premium 100% cotton...
    303019961
    SKU:
    303019961
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    COLOR:
    BLACK
    STYLE:
    SHORT-SLEEVE
    UNITS:
    EACH
    GENDER:
    MEN'S
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    BASE COLOR:
    BLACK
    COLOR:
    WHITE
    FIT:
    REGULAR
    GRAPHIC:
    PISTON
    MATERIAL:
    COTTON
    SIZE:
    XL
    STYLE:
    CREWNECK
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Piston T-Shirt Black 3XL 6431740-060 Pro Circuit Piston T-Shirt Black 3XL 6431740-060

    Pro Circuit Piston T-Shirt Black 3XL 6431740-060

    PRO CIRCUIT

    $29.95
    Represent your racing passion with authentic Pro Circuit branding that resonates with the motorsports community. This premium cotton tee delivers the comfort and durability you need for track days,...
    303019963
    SKU:
    303019963
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    COLOR:
    BLACK
    FIT:
    REGULAR
    GENDER:
    MEN'S
    GRAPHIC:
    PISTON
    MATERIAL:
    COTTON
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    SHORT-SLEEVE
    TYPE:
    CASUAL
    SIZE:
    3XL
    SIZE GROUP:
    ADULT
    STYLE:
    CREWNECK
    PRODUCT NAME:
    T-SHIRT
    BASE COLOR:
    BLACK
    COLOR:
    WHITE
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Spark Plug T-Shirt Medium 1999 Race Team Graphic 6431750-020 Pro Circuit Spark Plug T-Shirt Medium 1999 Race Team Graphic 6431750-020

    Pro Circuit Spark Plug T-Shirt Medium 1999 Race Team Graphic 6431750-020

    PRO CIRCUIT

    $29.95
    Represent your heritage in the paddock and beyond with authentic Pro Circuit race team apparel that captures the golden era of motorsports. This 1999 Race Team graphic tee lets you wear your passion...
    303019965
    SKU:
    303019965
    Availability:
    Ships Same Business Day
    Weight:
    0.33 LBS
    FIT:
    REGULAR
    GENDER:
    MEN'S
    MATERIAL:
    COTTON
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    SIZE:
    M
    TYPE:
    CASUAL
    UNITS:
    EACH
    GRAPHIC:
    SPARK PLUG
    SIZE GROUP:
    ADULT
    BASE COLOR:
    OFF-WHITE
    COLOR:
    CREAM
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    COLOR:
    BLUE
    COLOR:
    RED
    COLOR:
    YELLOW
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 2XL 6431750-050 Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 2XL 6431750-050

    Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 2XL 6431750-050

    PRO CIRCUIT

    $29.95
    Rep your roots in professional motorsport with authentic vintage racing apparel that connects you to the golden era of competition. The 1999 Pro Circuit race team graphic delivers genuine heritage—no...
    303019968
    SKU:
    303019968
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    COLOR:
    BLUE
    GRAPHIC:
    SPARK PLUG
    SIZE:
    2XL
    SIZE GROUP:
    ADULT
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    BASE COLOR:
    OFF-WHITE
    COLOR:
    CREAM
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    COLOR:
    RED
    COLOR:
    YELLOW
    GENDER:
    MEN'S
    TYPE:
    CASUAL
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Racer Zip Hoodie Black Large 6511920-030

    Pro Circuit Racer Zip Hoodie Black Large 6511920-030

    PRO CIRCUIT

    $51.95
    Whether you're heading to the track, the shop, or just showing your colors around town, the Pro Circuit Racer Zip Hoodie delivers motorsports authenticity without compromising on comfort. Built from...
    30505601
    SKU:
    30505601
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $51.95
    Subtotal:
  • Pro Circuit Racer Zip Hoodie Black 3XL 6511920-060

    Pro Circuit Racer Zip Hoodie Black 3XL 6511920-060

    PRO CIRCUIT

    $52.50
    Whether you're logging seat time at the track or representing the motorsport lifestyle off-duty, the Pro Circuit Racer Zip Hoodie delivers the comfort and visual identity serious enthusiasts demand...
    30505604
    SKU:
    30505604
    Availability:
    Ships Same Business Day
    Weight:
    1.51 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $52.50
    Subtotal:
  • Pro Circuit Water Pump Cover with Impeller for Honda CRF450R 2019 WPH09450

    Pro Circuit Water Pump Cover with Impeller for Honda CRF450R 2019 WPH09450

    PRO CIRCUIT

    $239.95
    Your Honda CRF450R's engine cooling efficiency directly impacts reliability and sustained performance under demanding conditions. The Pro Circuit Water Pump Cover replaces a vulnerable OEM component...
    09401180
    SKU:
    09401180
    Availability:
    Ships Same Business Day
    Weight:
    0.36 LBS
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    MACHINED
    TYPE:
    WATER PUMP
    UNITS:
    SET
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • Pro Circuit Water Pump Cover with Impeller for 2004-2006 Suzuki RM-Z250 WPK04250

    Pro Circuit Water Pump Cover with Impeller for 2004-2006 Suzuki RM-Z250 WPK04250

    PRO CIRCUIT

    $239.95
    Keep your RM-Z250's engine running at peak operating temperature with the PRO CIRCUIT Water Pump Cover—a CNC-machined upgrade that directly improves cooling efficiency and reliability under demanding...
    09400464
    SKU:
    09400464
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    COVER
    TYPE:
    WATER PUMP
    COLOR/FINISH:
    MACHINED
    UNITS:
    SET
    Qty in Cart: 0
    Quantity:
    Price:
    $239.95
    Subtotal:
  • Pro Circuit Backfire Screen Eliminator Kit Kawasaki KX250F 2006-2014 PC4012-0001

    Pro Circuit Backfire Screen Eliminator Kit Kawasaki KX250F 2006-2014 PC4012-0001

    PRO CIRCUIT

    $39.95
    The restrictive wire screen in your stock air filter cage is costing you horsepower and throttle response. The PRO CIRCUIT Backfire Screen Eliminator Kit removes this bottleneck, delivering...
    10110777
    SKU:
    10110777
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MATERIAL:
    TEXTILE
    TYPE:
    BACKFIRE SCREEN ELIMINATOR
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    COLOR/FINISH:
    GREEN
    Qty in Cart: 0
    Quantity:
    Price:
    $39.95
    Subtotal:
  • Pro Circuit Carburetor Cannister Honda CRF150R 2002-2025 CAN01

    Pro Circuit Carburetor Cannister Honda CRF150R 2002-2025 CAN01

    PRO CIRCUIT

    $39.95
    Carburetor overflow tubes routed improperly create fuel spillage, clutter your engine bay, and compromise the clean airflow your CRF150R needs to breathe. The Pro Circuit Carburetor Cannister...
    10500036
    SKU:
    10500036
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    UNITS:
    EACH
    COLOR/FINISH:
    RED
    BASE COLOR:
    RED
    PRODUCT NAME:
    CANNISTER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CARBURETOR
    Qty in Cart: 0
    Quantity:
    Price:
    $39.95
    Subtotal:
  • Pro Circuit Clutch Springs Kawasaki KX250F 2004-2018 CSK10250-CS

    Pro Circuit Clutch Springs Kawasaki KX250F 2004-2018 CSK10250-CS

    PRO CIRCUIT

    $69.95
    Stock clutch springs compromise your KX250F's power delivery, allowing slippage under aggressive acceleration and reducing your control over torque transfer. Pro Circuit Clutch Springs restore...
    11310149
    SKU:
    11310149
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    UNITS:
    SET
    PRODUCT NAME:
    SPRING SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • Pro Circuit Clutch Springs Suzuki RM85 2002-2017 CSS12085

    Pro Circuit Clutch Springs Suzuki RM85 2002-2017 CSS12085

    PRO CIRCUIT

    $72.95
    Stock clutch springs lose tension over time, leading to slipping and inconsistent power delivery—especially critical on a race-ready RM85. These Pro Circuit springs restore positive engagement and...
    11312427
    SKU:
    11312427
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    UNITS:
    SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    SPRING SET
    Qty in Cart: 0
    Quantity:
    Price:
    $72.95
    Subtotal:
  • Pro Circuit T-4 Silencer Honda TRX400X 2009 2012-2014 4QH99400

    Pro Circuit T-4 Silencer Honda TRX400X 2009 2012-2014 4QH99400

    PRO CIRCUIT

    $523.95
    The Pro Circuit T-4 Silencer unlocks measurable performance gains for your Honda TRX400X while maintaining the durability needed for both race and trail conditions. This bolt-on upgrade delivers...
    4QH99400
    SKU:
    4QH99400
    Availability:
    Ships Same Business Day
    Weight:
    4.10 LBS
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    T-4
    STYLE:
    ROUND
    TYPE:
    SLIP-ON
    FEATURES:
    WITH SPARK ARRESTOR
    PIPE MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    SILENCER
    RIDING STYLE:
    ATV
    MUFFLER COLOR/FINISH:
    BRUSHED
    MUFFLER MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    $523.95
    Qty in Cart: 0
    Quantity:
    Price:
    $523.95
    Subtotal:
  • Pro Circuit T-6 Slip-On Exhaust for Suzuki RM-Z450 2018-2025 0141845A

    Pro Circuit T-6 Slip-On Exhaust for Suzuki RM-Z450 2018-2025 0141845A

    PRO CIRCUIT

    $590.95
    The Pro Circuit T-6 slip-on exhaust delivers measurable gains in horsepower and throttle response while keeping your RM-Z450 street-legal with a removable spark arrestor. This bolt-on upgrade...
    18211845
    SKU:
    18211845
    Availability:
    Ships Same Business Day
    Weight:
    10.00 LBS
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    SILENCER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    MODEL:
    T-6
    Qty in Cart: 0
    Quantity:
    Price:
    $590.95
    Subtotal:
  • Pro Circuit Ti-2 Silencer Kawasaki KX125 2003 2004 2005 2006 2007 1121412K

    Pro Circuit Ti-2 Silencer Kawasaki KX125 2003 2004 2005 2006 2007 1121412K

    PRO CIRCUIT

    $446.95
    The Pro Circuit Ti-2 Silencer delivers measurable gains in power and throttle response while significantly reducing unsprung weight on your KX125. Built with titanium and carbon-aramid fiber, this...
    18211734
    SKU:
    18211734
    Availability:
    Ships Same Business Day
    Weight:
    1.45 LBS
    PIPE MATERIAL:
    TITANIUM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    END CAP MATERIAL:
    TITANIUM
    PRODUCT NAME:
    SILENCER
    MODEL:
    TI-2
    MUFFLER MATERIAL:
    CARBON-ARAMID FIBER
    TYPE:
    SLIP-ON
    $446.95
    Qty in Cart: 0
    Quantity:
    Price:
    $446.95
    Subtotal:
  • Pro Circuit Brake Hose Clamp Yamaha YZ125 2009-2025 PC4014-0001 Pro Circuit Brake Hose Clamp Yamaha YZ125 2009-2025 PC4014-0001

    Pro Circuit Brake Hose Clamp Yamaha YZ125 2009-2025 PC4014-0001

    PRO CIRCUIT

    $44.95
    Stock brake hose clamps are prone to failure under track stress, leaving you vulnerable to line movement and potential system degradation. The Pro Circuit Brake Hose Clamp eliminates this weak point...
    17420433
    SKU:
    17420433
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    COLOR/FINISH:
    BLACK
    TYPE:
    BRAKE HOSE
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    CLAMP
    $44.95
    Qty in Cart: 0
    Quantity:
    Price:
    $44.95
    Subtotal:
  • Pro Circuit Platinum Head Pipe Kawasaki KX125 2000 PK00125P

    Pro Circuit Platinum Head Pipe Kawasaki KX125 2000 PK00125P

    PRO CIRCUIT

    $352.95
    The Pro Circuit Platinum Head Pipe is engineered for KX125 riders who demand measurable gains in exhaust scavenging and throttle response. Its nickel-bath technology resists corrosion and abrasion...
    PK00125P
    SKU:
    PK00125P
    Availability:
    Ships Same Business Day
    Weight:
    5.63 LBS
    $352.95
    Qty in Cart: 0
    Quantity:
    Price:
    $352.95
    Subtotal:
  • Pro Circuit Platinum Head Pipe KX125 2001-2002 PK01125P

    Pro Circuit Platinum Head Pipe KX125 2001-2002 PK01125P

    PRO CIRCUIT

    $352.95
    If you're running a KX125 that sees serious track time, exhaust flow directly impacts your power band and throttle response. The Pro Circuit Platinum Head Pipe delivers measurable performance gains...
    PK01125P
    SKU:
    PK01125P
    Availability:
    Ships Same Business Day
    Weight:
    5.31 LBS
    $352.95
    Qty in Cart: 0
    Quantity:
    Price:
    $352.95
    Subtotal:
  • Pro Circuit Platinum Head Pipe Kawasaki KX250 1995 PK95250P

    Pro Circuit Platinum Head Pipe Kawasaki KX250 1995 PK95250P

    PRO CIRCUIT

    $393.95
    The Pro Circuit Platinum Head Pipe is engineered to deliver measurable gains in exhaust scavenging and peak power delivery on your KX250. Hand-welded construction and CNC-machined flanges ensure...
    PK95250P
    SKU:
    PK95250P
    Availability:
    Ships Same Business Day
    Weight:
    5.13 LBS
    $393.95
    Qty in Cart: 0
    Quantity:
    Price:
    $393.95
    Subtotal:
  • Pro Circuit Platinum Head Pipe Kawasaki KX250 1999 PK99250P

    Pro Circuit Platinum Head Pipe Kawasaki KX250 1999 PK99250P

    PRO CIRCUIT

    $393.95
    The Pro Circuit Platinum Head Pipe is engineered to maximize exhaust flow and throttle response on your KX250, delivering measurable gains in mid-range power and engine efficiency. Built with...
    PK99250P
    SKU:
    PK99250P
    Availability:
    Ships Same Business Day
    Weight:
    7.81 LBS
    $393.95
    Qty in Cart: 0
    Quantity:
    Price:
    $393.95
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER