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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 Patch T-Shirt Gray XL 6411560-040

    Pro Circuit Patch T-Shirt Gray XL 6411560-040

    PRO CIRCUIT

    $29.95
    Show your commitment to the sport without sacrificing everyday comfort. This Pro Circuit x Monster Energy collaboration tee combines premium materials with durable screen printing to keep your...
    303013430
    SKU:
    303013430
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Patch T-Shirt 2XL Gray 6411560-050

    Pro Circuit Patch T-Shirt 2XL Gray 6411560-050

    PRO CIRCUIT

    $29.95
    Rep your passion for precision engineering and high-performance culture with the Pro Circuit Patch T-Shirt. This collaboration between Pro Circuit and Monster Energy delivers the comfort and...
    303013431
    SKU:
    303013431
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Team Monster T-Shirt Black Medium PC0126-0220

    Pro Circuit Team Monster T-Shirt Black Medium PC0126-0220

    PRO CIRCUIT

    $29.95
    Whether you're representing the team at the track or building your racing collection off-season, official PRO CIRCUIT apparel establishes credibility and keeps you comfortable during long days in the...
    30302782
    SKU:
    30302782
    Availability:
    Ships Same Business Day
    Weight:
    0.46 LBS
    BASE COLOR:
    BLACK
    COLOR:
    BLACK
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    SIZE:
    M
    SIZE GROUP:
    ADULT
    STYLE:
    SHORT-SLEEVE
    TYPE:
    CASUAL
    GENDER:
    MEN'S
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    COLOR:
    LIME
    COLOR:
    WHITE
    MODEL:
    TEAM MONSTER
    RIDING STYLE:
    ATV
    STYLE:
    CREWNECK
    UNITS:
    EACH
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Team Monster T-Shirt Black 1974 Yamaha DT100 XL PC0126-0240

    Pro Circuit Team Monster T-Shirt Black 1974 Yamaha DT100 XL PC0126-0240

    PRO CIRCUIT

    $29.95
    Whether you're trackside or representing the brand off the circuit, the Pro Circuit Team Monster T-Shirt delivers the comfort and durability that motorsport enthusiasts demand. Built from premium...
    30302784
    SKU:
    30302784
    Availability:
    Ships Same Business Day
    Weight:
    0.61 LBS
    BASE COLOR:
    BLACK
    COLOR:
    BLACK
    SIZE GROUP:
    ADULT
    STYLE:
    SHORT-SLEEVE
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CASUAL
    COLOR:
    LIME
    COLOR:
    WHITE
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    SIZE:
    XL
    GENDER:
    MEN'S
    MODEL:
    TEAM MONSTER
    STYLE:
    CREWNECK
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Pit Bike T-Shirt Medium 6431720-020

    Pro Circuit Pit Bike T-Shirt Medium 6431720-020

    PRO CIRCUIT

    $29.95
    Whether you're trackside at the pits or representing your passion off the track, the Pro Circuit Pit Bike T-Shirt delivers authentic racing heritage with everyday wearability. This piece combines...
    303019857
    SKU:
    303019857
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    COLOR:
    BLACK
    MODEL:
    PIT BIKE
    COLOR:
    GREEN
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    BASE COLOR:
    GREEN
    GENDER:
    MEN'S
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    SIZE:
    M
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Pit Bike T-Shirt Large Military Green 6431720-030

    Pro Circuit Pit Bike T-Shirt Large Military Green 6431720-030

    PRO CIRCUIT

    $29.95
    Whether you're heading to the track, the pits, or just want to rep classic motorsport heritage, this Pro Circuit pit bike tee delivers authentic vintage style with proven durability. The high-quality...
    303019858
    SKU:
    303019858
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    BASE COLOR:
    GREEN
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    SIZE:
    L
    UNITS:
    EACH
    SIZE GROUP:
    ADULT
    COLOR:
    BLACK
    GENDER:
    MEN'S
    TYPE:
    CASUAL
    COLOR:
    GREEN
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    MODEL:
    PIT BIKE
    RIDING STYLE:
    STREET
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Pit Bike T-Shirt Green XL 6431720-040

    Pro Circuit Pit Bike T-Shirt Green XL 6431720-040

    PRO CIRCUIT

    $29.95
    Whether you're a pit bike racer, vintage motorsports enthusiast, or simply someone who appreciates authentic racing culture, this Pro Circuit tee delivers genuine style with substance. The...
    303019859
    SKU:
    303019859
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    SIZE:
    XL
    SIZE GROUP:
    ADULT
    BASE COLOR:
    GREEN
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    COLOR:
    BLACK
    GENDER:
    MEN'S
    TYPE:
    CASUAL
    COLOR:
    GREEN
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    MODEL:
    PIT BIKE
    RIDING STYLE:
    STREET
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Pit Bike T-Shirt Green 2XL 6431720-050

    Pro Circuit Pit Bike T-Shirt Green 2XL 6431720-050

    PRO CIRCUIT

    $29.95
    Whether you're trackside or off-duty, the Pro Circuit Pit Bike T-Shirt in vibrant green delivers authentic pit bike heritage without compromising on comfort. The screen-printed vintage '70s graphic...
    303019860
    SKU:
    303019860
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    COLOR:
    GREEN
    RIDING STYLE:
    STREET
    STYLE:
    CREWNECK
    COLOR:
    BLACK
    MATERIAL:
    COTTON
    MODEL:
    PIT BIKE
    SIZE:
    2XL
    STYLE:
    SHORT-SLEEVE
    FIT:
    REGULAR
    UNITS:
    EACH
    BASE COLOR:
    GREEN
    GENDER:
    MEN'S
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Piston T-Shirt Black Large 6431740-030 Pro Circuit Piston T-Shirt Black Large 6431740-030

    Pro Circuit Piston T-Shirt Black Large 6431740-030

    PRO CIRCUIT

    $29.95
    Display your commitment to the sport with authentic Pro Circuit branding that resonates with serious racers and enthusiasts alike. This tee combines premium comfort with professional-grade screen...
    303019960
    SKU:
    303019960
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    COLOR:
    WHITE
    GENDER:
    MEN'S
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CASUAL
    UNITS:
    EACH
    BASE COLOR:
    BLACK
    SIZE GROUP:
    ADULT
    COLOR:
    BLACK
    SIZE:
    L
    FIT:
    REGULAR
    GRAPHIC:
    PISTON
    MATERIAL:
    COTTON
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Piston T-Shirt Black 2XL 6431740-050 Pro Circuit Piston T-Shirt Black 2XL 6431740-050

    Pro Circuit Piston T-Shirt Black 2XL 6431740-050

    PRO CIRCUIT

    $29.95
    Whether you're at the track, in the paddock, or representing the Pro Circuit brand off-duty, this tee delivers the comfort and durability you need for all-day wear. The premium cotton construction...
    303019962
    SKU:
    303019962
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    COLOR:
    WHITE
    PRODUCT NAME:
    T-SHIRT
    UNITS:
    EACH
    COLOR:
    BLACK
    SIZE:
    2XL
    GENDER:
    MEN'S
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    BASE COLOR:
    BLACK
    FIT:
    REGULAR
    GRAPHIC:
    PISTON
    MATERIAL:
    COTTON
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic Small 6431750-010 Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic Small 6431750-010

    Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic Small 6431750-010

    PRO CIRCUIT

    $29.95
    Wear your racing heritage with a piece of PRO CIRCUIT history. This 1999 Race Team graphic tee lets you rep the brand that's been pushing performance boundaries for decades—whether you're turning...
    303019964
    SKU:
    303019964
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    STYLE:
    CREWNECK
    BASE COLOR:
    OFF-WHITE
    COLOR:
    CREAM
    COLOR:
    RED
    COLOR:
    YELLOW
    FIT:
    REGULAR
    GENDER:
    MEN'S
    MATERIAL:
    COTTON
    STYLE:
    SHORT-SLEEVE
    TYPE:
    CASUAL
    GRAPHIC:
    SPARK PLUG
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    COLOR:
    BLUE
    SIZE:
    S
    UNITS:
    EACH
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Spark Plug T-Shirt 1999 Race Team Large 6431750-030 Pro Circuit Spark Plug T-Shirt 1999 Race Team Large 6431750-030

    Pro Circuit Spark Plug T-Shirt 1999 Race Team Large 6431750-030

    PRO CIRCUIT

    $29.95
    Whether you're repping your racing heritage at the track or keeping it real with motorsport culture off-duty, the Pro Circuit Spark Plug T-Shirt delivers authentic 1999 Race Team nostalgia with the...
    303019966
    SKU:
    303019966
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    GRAPHIC:
    SPARK PLUG
    SIZE GROUP:
    ADULT
    STYLE:
    CREWNECK
    COLOR:
    RED
    FIT:
    REGULAR
    GENDER:
    MEN'S
    MATERIAL:
    COTTON
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    SHORT-SLEEVE
    TYPE:
    CASUAL
    BASE COLOR:
    OFF-WHITE
    COLOR:
    CREAM
    COLOR:
    BLUE
    COLOR:
    YELLOW
    SIZE:
    L
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Spark Plug T-Shirt 1999 Race Team XL 6431750-040 Pro Circuit Spark Plug T-Shirt 1999 Race Team XL 6431750-040

    Pro Circuit Spark Plug T-Shirt 1999 Race Team XL 6431750-040

    PRO CIRCUIT

    $29.95
    Wear your racing heritage with the PRO CIRCUIT Spark Plug T-Shirt, designed for those who live and breathe motorsports. This piece captures the competitive spirit of the legendary 1999 Race Team era,...
    303019967
    SKU:
    303019967
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    PRODUCT NAME:
    T-SHIRT
    UNITS:
    EACH
    COLOR:
    BLUE
    COLOR:
    YELLOW
    GRAPHIC:
    SPARK PLUG
    BASE COLOR:
    OFF-WHITE
    COLOR:
    CREAM
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    SIZE:
    XL
    STYLE:
    CREWNECK
    STYLE:
    SHORT-SLEEVE
    COLOR:
    RED
    GENDER:
    MEN'S
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 3XL 6431750-060 Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 3XL 6431750-060

    Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 3XL 6431750-060

    PRO CIRCUIT

    $29.95
    Represent the golden era of Pro Circuit racing with authentic 1999 team heritage. This vintage graphic tee lets you wear racing history whether you're in the paddock or the street, blending nostalgic...
    303019969
    SKU:
    303019969
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    SIZE:
    3XL
    STYLE:
    CREWNECK
    BASE COLOR:
    OFF-WHITE
    COLOR:
    BLUE
    COLOR:
    CREAM
    COLOR:
    RED
    COLOR:
    YELLOW
    STYLE:
    SHORT-SLEEVE
    FIT:
    REGULAR
    MATERIAL:
    COTTON
    UNITS:
    EACH
    GENDER:
    MEN'S
    GRAPHIC:
    SPARK PLUG
    PRODUCT NAME:
    T-SHIRT
    RIDING STYLE:
    OFF-ROAD
    SIZE GROUP:
    ADULT
    TYPE:
    CASUAL
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Flag T-Shirt Black Medium 6411810-20

    Pro Circuit Flag T-Shirt Black Medium 6411810-20

    PRO CIRCUIT

    $29.95
    Whether you're at the track, in the shop, or representing the brand off-duty, the Pro Circuit Flag T-Shirt delivers the comfort and durability you need for extended wear. Built with quality screen...
    303017300
    SKU:
    303017300
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Flag T-Shirt Large 6411810-30

    Pro Circuit Flag T-Shirt Large 6411810-30

    PRO CIRCUIT

    $29.95
    If you're serious about motorsports, your casual wardrobe should reflect that commitment. The Pro Circuit Flag T-Shirt delivers a clean, recognizable design that works whether you're heading to the...
    303017301
    SKU:
    303017301
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Flag T-Shirt Black XL 6411810-40

    Pro Circuit Flag T-Shirt Black XL 6411810-40

    PRO CIRCUIT

    $29.95
    Show your motorsports allegiance without compromising on quality or comfort. This Pro Circuit Flag T-Shirt delivers the durability and style expected by serious enthusiasts—whether you're at the...
    303017302
    SKU:
    303017302
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Flag T-Shirt Black 2XL 6411810-50

    Pro Circuit Flag T-Shirt Black 2XL 6411810-50

    PRO CIRCUIT

    $29.95
    Whether you're trackside, in the garage, or representing at the next motorsports event, the PRO CIRCUIT Flag T-Shirt delivers the comfort and durability you need for all-day wear. Built from premium...
    303017303
    SKU:
    303017303
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Flag T-Shirt Black 3XL 6411810-60

    Pro Circuit Flag T-Shirt Black 3XL 6411810-60

    PRO CIRCUIT

    $29.95
    Show your colors at the track and beyond with the PRO CIRCUIT Flag T-Shirt. Built from premium-quality fabric that resists fading and holds up through repeated washings, this shirt delivers the...
    303017304
    SKU:
    303017304
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Pro Circuit Racer Zip Hoodie Black Medium 6511920-020

    Pro Circuit Racer Zip Hoodie Black Medium 6511920-020

    PRO CIRCUIT

    $51.95
    Whether you're heading to the track or representing the motorsport lifestyle off-duty, the Pro Circuit Racer Zip Hoodie delivers authentic brand identity without compromising on comfort. The...
    30505600
    SKU:
    30505600
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    $51.95
    Qty in Cart: 0
    Quantity:
    Price:
    $51.95
    Subtotal:
  • Pro Circuit Racer Zip Hoodie Black XL 6511920-040

    Pro Circuit Racer Zip Hoodie Black XL 6511920-040

    PRO CIRCUIT

    $51.95
    When you're not on the track, you need gear that reflects your commitment to the sport. This Pro Circuit Racer Zip Hoodie delivers the comfort and durability you expect from a trusted motorsports...
    30505602
    SKU:
    30505602
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    $51.95
    Qty in Cart: 0
    Quantity:
    Price:
    $51.95
    Subtotal:
  • Pro Circuit Racer Zip Hoodie Black 2XL 6511920-050

    Pro Circuit Racer Zip Hoodie Black 2XL 6511920-050

    PRO CIRCUIT

    $52.50
    Built for those who live and breathe motorsports, the Pro Circuit Racer Zip Hoodie delivers race-inspired style without compromising on comfort or durability. Whether you're in the paddock, at the...
    30505603
    SKU:
    30505603
    Availability:
    Ships Same Business Day
    Weight:
    1.50 LBS
    $52.50
    Qty in Cart: 0
    Quantity:
    Price:
    $52.50
    Subtotal:
  • Pro Circuit Engine Plug Kit for Kawasaki KX250F 2011-2024 PC4009-0001

    Pro Circuit Engine Plug Kit for Kawasaki KX250F 2011-2024 PC4009-0001

    PRO CIRCUIT

    $69.95
    If you're running a KX250F, the stock engine plugs are functionally adequate but visually unremarkable. The Pro Circuit Engine Plug Kit elevates both the look and longevity of your engine bay with...
    09400659
    SKU:
    09400659
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    COLOR/FINISH:
    ANODIZED
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    MIRROR
    PRODUCT NAME:
    PLUG KIT
    UNITS:
    KIT
    COLOR/FINISH:
    RED
    MATERIAL:
    ALUMINUM
    TYPE:
    ENGINE
    $69.95
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • Pro Circuit Clutch Cover for Kawasaki KX250F 2009-2020 CCK09250

    Pro Circuit Clutch Cover for Kawasaki KX250F 2009-2020 CCK09250

    PRO CIRCUIT

    $169.95
    The stock clutch cover on your KX250F can become a heat trap during intense motocross sessions, compromising cooling efficiency and reliability when you need it most. Pro Circuit's billet aluminum...
    09400820
    SKU:
    09400820
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    COLOR/FINISH:
    ALUMINUM
    COLOR/FINISH:
    BLACK
    MATERIAL:
    T-6 ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $169.95
    Qty in Cart: 0
    Quantity:
    Price:
    $169.95
    Subtotal:
  • Pro Circuit Engine Plug Kit Yamaha YZ450F 2010-2020 PC40009-0019

    Pro Circuit Engine Plug Kit Yamaha YZ450F 2010-2020 PC40009-0019

    PRO CIRCUIT

    $69.95
    Engine covers and filler caps are exposed to constant heat, vibration, and mud—stock plastic plugs crack and degrade quickly. The Pro Circuit Engine Plug Kit replaces these wear items with...
    09401993
    SKU:
    09401993
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    MATERIAL:
    ALUMINUM
    COLOR/FINISH:
    MIRROR
    TYPE:
    ENGINE
    COLOR/FINISH:
    BLUE
    PRODUCT NAME:
    PLUG KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    COLOR/FINISH:
    ANODIZED
    $69.95
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • Pro Circuit Ignition Cover for Kawasaki KLX110 2010-2025 ICK20110

    Pro Circuit Ignition Cover for Kawasaki KLX110 2010-2025 ICK20110

    PRO CIRCUIT

    $63.00
    The ignition cover is one of the most exposed components on your KLX110, taking direct hits from roost, mud, and debris during aggressive riding. This Pro Circuit ignition cover shields your bike's...
    09401985
    SKU:
    09401985
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    IGNITION
    $63.00
    Qty in Cart: 0
    Quantity:
    Price:
    $63.00
    Subtotal:
  • Pro Circuit Replacement O-Ring for 2004 Kawasaki KX250F and RM-Z250 PC4008-0401

    Pro Circuit Replacement O-Ring for 2004 Kawasaki KX250F and RM-Z250 PC4008-0401

    PRO CIRCUIT

    $5.95
    A failing water pump seal compromises cooling system integrity and risks catastrophic engine damage on the track or trail. The PRO CIRCUIT PC4008-0401 replacement O-ring restores OEM-spec sealing...
    09350003
    SKU:
    09350003
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    RIDING STYLE:
    OFF-ROAD
    APPLICATION:
    WATER PUMP
    PRODUCT NAME:
    O-RING
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • Pro Circuit Clutch Cover Kawasaki KX250F 2004-2008 CCK04250 Pro Circuit Clutch Cover Kawasaki KX250F 2004-2008 CCK04250

    Pro Circuit Clutch Cover Kawasaki KX250F 2004-2008 CCK04250

    PRO CIRCUIT

    $173.95
    The Pro Circuit Clutch Cover combines aerospace-grade durability with thermal management—critical for maintaining consistent clutch engagement during extended high-RPM sessions. T-6 aircraft aluminum...
    09400467
    SKU:
    09400467
    Availability:
    Ships Same Business Day
    Weight:
    0.46 LBS
    COLOR/FINISH:
    BLACK
    MATERIAL:
    T-6 ALUMINUM
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $173.95
    Qty in Cart: 0
    Quantity:
    Price:
    $173.95
    Subtotal:
  • Pro Circuit Fuel Mixture Screw Honda CRF250R 2004-2009 FMS07250

    Pro Circuit Fuel Mixture Screw Honda CRF250R 2004-2009 FMS07250

    PRO CIRCUIT

    $29.95
    Precise fuel mixture tuning is critical for maximizing throttle response and engine efficiency on your CRF250R, and factory carburetors often leave performance on the table. The Pro Circuit Fuel...
    10500173
    SKU:
    10500173
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    BASE COLOR:
    RED
    TYPE:
    FUEL MIXTURE
    UNITS:
    EACH
    MODEL:
    FCR
    PRODUCT NAME:
    SCREW
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    RED
    MATERIAL:
    ALUMINUM
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • PRO CIRCUIT Pro Circuit Axle Blocks Red Honda CRF150R 2007-2025 HAB07

    Pro Circuit Axle Blocks Red Honda CRF150R 2007-2025 HAB07

    PRO CIRCUIT

    $59.95
    Precise rear wheel alignment is fundamental to handling performance on any track or trail, and the Pro Circuit Axle Blocks deliver exactly that with zero guesswork. By maintaining consistent chain...
    12310106
    SKU:
    12310106
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    PRODUCT NAME:
    AXLE BLOCK
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    PAIR
    COLOR/FINISH:
    RED
    $59.95
    Qty in Cart: 0
    Quantity:
    Price:
    $59.95
    Subtotal:
  • PRO CIRCUIT Pro Circuit Axle Blocks Honda CRF250R 2009-2025 Red HAB09

    Pro Circuit Axle Blocks Honda CRF250R 2009-2025 Red HAB09

    PRO CIRCUIT

    $59.95
    Precise rear wheel alignment directly impacts your handling, stability, and drivetrain longevity—three factors that separate competitive lap times from mediocre ones. Pro Circuit Axle Blocks...
    12310217
    SKU:
    12310217
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    PRODUCT NAME:
    AXLE BLOCK
    COLOR/FINISH:
    RED
    MATERIAL:
    BILLET ALUMINUM
    UNITS:
    PAIR
    COLOR/FINISH:
    ANODIZED
    RIDING STYLE:
    OFF-ROAD
    $59.95
    Qty in Cart: 0
    Quantity:
    Price:
    $59.95
    Subtotal:
  • Pro Circuit Clutch Springs Kawasaki KX450F 2006-2020 CSK19450-CS Pro Circuit Clutch Springs Kawasaki KX450F 2006-2020 CSK19450-CS

    Pro Circuit Clutch Springs Kawasaki KX450F 2006-2020 CSK19450-CS

    PRO CIRCUIT

    $79.95
    Stock clutch springs lose their bite over time, leading to delayed engagement and power loss on the track or trail. Pro Circuit's stiffer clutch springs deliver 12-15% increased spring rate, ensuring...
    11310608
    SKU:
    11310608
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    PRODUCT NAME:
    SPRING SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    UNITS:
    SET
    $79.95
    Qty in Cart: 0
    Quantity:
    Price:
    $79.95
    Subtotal:
  • Pro Circuit Clutch Springs Honda CRF450R 2013-2020 CSH13450-CS

    Pro Circuit Clutch Springs Honda CRF450R 2013-2020 CSH13450-CS

    PRO CIRCUIT

    $83.95
    Stock clutch springs limit your CRF450R's ability to transfer power consistently, especially under aggressive acceleration or sustained load. Pro Circuit Clutch Springs increase stiffness by 12-15%...
    11312428
    SKU:
    11312428
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    SPRING SET
    TYPE:
    CLUTCH
    UNITS:
    SET
    $83.95
    Qty in Cart: 0
    Quantity:
    Price:
    $83.95
    Subtotal:
  • Pro Circuit Clutch Springs Kawasaki KX85 2001-2025 CSK09085

    Pro Circuit Clutch Springs Kawasaki KX85 2001-2025 CSK09085

    PRO CIRCUIT

    $57.95
    Stock clutch springs on your KX85 will slip under sustained high-torque acceleration, costing you precious power transfer and throttle response. Pro Circuit's stiffer spring set delivers the positive...
    11312430
    SKU:
    11312430
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    UNITS:
    SET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    SPRING SET
    $57.95
    Qty in Cart: 0
    Quantity:
    Price:
    $57.95
    Subtotal:
  • Pro Circuit Clutch Springs Yamaha YZ250F 2019-2021 CSY19250-CS

    Pro Circuit Clutch Springs Yamaha YZ250F 2019-2021 CSY19250-CS

    PRO CIRCUIT

    $83.95
    Stock clutch springs wear and soften over time, causing slipping, inconsistent engagement, and lost power delivery—especially critical in competitive riding where milliseconds matter. Pro Circuit's...
    11313380
    SKU:
    11313380
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    SPRING SET
    UNITS:
    SET
    $83.95
    Qty in Cart: 0
    Quantity:
    Price:
    $83.95
    Subtotal:
  • Pro Circuit Original Logo Van Decal 36x9 inches DC96VAN

    Pro Circuit Original Logo Van Decal 36x9 inches DC96VAN

    PRO CIRCUIT

    $9.95
    Make your motorsports identity unmissable on the road. This Pro Circuit Original Logo Van Decal delivers premium visibility with a professional aesthetic that speaks to serious enthusiasts and...
    43201454
    SKU:
    43201454
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    COLOR/FINISH:
    YELLOW
    GRAPHIC:
    PRO CIRCUIT LOGO
    PRODUCT NAME:
    DECAL
    RIDING STYLE:
    OFF-ROAD
    BASE COLOR:
    BLACK
    BASE COLOR:
    RED
    BASE COLOR:
    YELLOW
    HEIGHT IMPERIAL:
    9'
    TYPE:
    VAN
    MATERIAL:
    VINYL
    WIDTH IMPERIAL:
    36'
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    RED
    UNITS:
    EACH
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • Pro Circuit T-4 Exhaust System for Honda TRX90X 2009 4QH90090

    Pro Circuit T-4 Exhaust System for Honda TRX90X 2009 4QH90090

    PRO CIRCUIT

    $370.95
    The Pro Circuit T-4 Exhaust System transforms your Honda TRX90X's power delivery and throttle response through optimized flow dynamics and precision engineering. A bolt-on upgrade that replaces...
    4QH90090
    SKU:
    4QH90090
    Availability:
    Ships Same Business Day
    Weight:
    3.82 LBS
    BASE COLOR:
    SILVER
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    EXHAUST SYSTEM
    COLOR/FINISH:
    BRUSHED
    END CAP STYLE:
    CONICAL
    MODEL:
    T4
    RIDING STYLE:
    ATV
    MATERIAL:
    ALUMINUM
    STYLE:
    ROUND
    TYPE:
    FULL SYSTEM
    UNITS:
    KIT
    $370.95
    Qty in Cart: 0
    Quantity:
    Price:
    $370.95
    Subtotal:
  • Pro Circuit T-4 Exhaust Kawasaki KLX125 2003-2016 4S03125

    Pro Circuit T-4 Exhaust Kawasaki KLX125 2003-2016 4S03125

    PRO CIRCUIT

    $349.95
    The PRO CIRCUIT T-4 Exhaust delivers measurable gains in throttle response and power output, backed by extensive dyno and track testing. If you're running a KLX125 and want to unlock its full...
    4S03125
    SKU:
    4S03125
    Availability:
    Ships Same Business Day
    Weight:
    3.88 LBS
    DESIGN/CONFIGURATION:
    1-INTO-1 SYSTEM
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    T4
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    EXHAUST SYSTEM
    TYPE:
    FULL SYSTEM
    RIDING STYLE:
    OFF-ROAD
    END CAP STYLE:
    CONICAL
    MATERIAL:
    ALUMINUM
    MUFFLER COLOR/FINISH:
    BRUSHED
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    $349.95
    Qty in Cart: 0
    Quantity:
    Price:
    $349.95
    Subtotal:
  • Pro Circuit T-4 Slip-On Silencer 2003 KTM 525 SX 4T00400

    Pro Circuit T-4 Slip-On Silencer 2003 KTM 525 SX 4T00400

    PRO CIRCUIT

    $523.95
    Stock silencers rob your 525 SX of its potential—the Pro Circuit T-4 slip-on delivers measurable horsepower and torque gains across the entire power band, transforming throttle response and...
    4T00400
    SKU:
    4T00400
    Availability:
    Ships Same Business Day
    Weight:
    4.50 LBS
    PRODUCT NAME:
    SILENCER
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    END CAP MATERIAL:
    STAINLESS STEEL
    MUFFLER MATERIAL:
    ALUMINUM
    STYLE:
    ROUND
    FEATURES:
    WITH SPARK ARRESTOR
    MODEL:
    T-4
    PIPE MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    SLIP-ON
    MUFFLER COLOR/FINISH:
    POLISHED
    $523.95
    Qty in Cart: 0
    Quantity:
    Price:
    $523.95
    Subtotal:
  • Pro Circuit T-4 Exhaust Honda CRF70F 2004-2012 4H00070

    Pro Circuit T-4 Exhaust Honda CRF70F 2004-2012 4H00070

    PRO CIRCUIT

    $370.95
    The Pro Circuit T-4 Exhaust delivers measurable gains in throttle response and power delivery for your Honda CRF70F, engineered through extensive dyno and track testing to ensure real-world...
    4H00070
    SKU:
    4H00070
    Availability:
    Ships Same Business Day
    Weight:
    3.69 LBS
    $370.95
    Qty in Cart: 0
    Quantity:
    Price:
    $370.95
    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

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