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
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Pro Circuit Patch T-Shirt Gray XL 6411560-040
PRO CIRCUIT
$29.95Show 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
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
Pro Circuit Patch T-Shirt 2XL Gray 6411560-050
PRO CIRCUIT
$29.95Rep 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 -
Pro Circuit Team Monster T-Shirt Black Medium PC0126-0220
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Team Monster T-Shirt Black 1974 Yamaha DT100 XL PC0126-0240
PRO CIRCUIT
$29.95Whether 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
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
Pro Circuit Pit Bike T-Shirt Medium 6431720-020
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Pit Bike T-Shirt Large Military Green 6431720-030
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Pit Bike T-Shirt Green XL 6431720-040
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Pit Bike T-Shirt Green 2XL 6431720-050
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Piston T-Shirt Black Large 6431740-030
PRO CIRCUIT
$29.95Display 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
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
Pro Circuit Piston T-Shirt Black 2XL 6431740-050
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic Small 6431750-010
PRO CIRCUIT
$29.95Wear 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 -
Pro Circuit Spark Plug T-Shirt 1999 Race Team Large 6431750-030
PRO CIRCUIT
$29.95Whether 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
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
Pro Circuit Spark Plug T-Shirt 1999 Race Team XL 6431750-040
PRO CIRCUIT
$29.95Wear 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 -
Pro Circuit Spark Plug T-Shirt 1999 Race Team Graphic 3XL 6431750-060
PRO CIRCUIT
$29.95Represent 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 -
Pro Circuit Flag T-Shirt Black Medium 6411810-20
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Flag T-Shirt Large 6411810-30
PRO CIRCUIT
$29.95If 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 -
Pro Circuit Flag T-Shirt Black XL 6411810-40
PRO CIRCUIT
$29.95Show 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 -
Pro Circuit Flag T-Shirt Black 2XL 6411810-50
PRO CIRCUIT
$29.95Whether 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 -
Pro Circuit Flag T-Shirt Black 3XL 6411810-60
PRO CIRCUIT
$29.95Show 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 -
Pro Circuit Racer Zip Hoodie Black Medium 6511920-020
PRO CIRCUIT
$51.95Whether 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 -
Pro Circuit Racer Zip Hoodie Black XL 6511920-040
PRO CIRCUIT
$51.95When 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 -
Pro Circuit Racer Zip Hoodie Black 2XL 6511920-050
PRO CIRCUIT
$52.50Built 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 -
Pro Circuit Engine Plug Kit for Kawasaki KX250F 2011-2024 PC4009-0001
PRO CIRCUIT
$69.95If 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 -
Pro Circuit Clutch Cover for Kawasaki KX250F 2009-2020 CCK09250
PRO CIRCUIT
$169.95The 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 -
Pro Circuit Engine Plug Kit Yamaha YZ450F 2010-2020 PC40009-0019
PRO CIRCUIT
$69.95Engine 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 -
Pro Circuit Ignition Cover for Kawasaki KLX110 2010-2025 ICK20110
PRO CIRCUIT
$63.00The 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 -
Pro Circuit Replacement O-Ring for 2004 Kawasaki KX250F and RM-Z250 PC4008-0401
PRO CIRCUIT
$5.95A 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
$5.95Qty in Cart: 0Quantity:Price:$5.95Subtotal: -
Pro Circuit Clutch Cover Kawasaki KX250F 2004-2008 CCK04250
PRO CIRCUIT
$173.95The 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 -
Pro Circuit Fuel Mixture Screw Honda CRF250R 2004-2009 FMS07250
PRO CIRCUIT
$29.95Precise 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 -
Pro Circuit Axle Blocks Red Honda CRF150R 2007-2025 HAB07
PRO CIRCUIT
$59.95Precise 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 -
Pro Circuit Axle Blocks Honda CRF250R 2009-2025 Red HAB09
PRO CIRCUIT
$59.95Precise 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 -
Pro Circuit Clutch Springs Kawasaki KX450F 2006-2020 CSK19450-CS
PRO CIRCUIT
$79.95Stock 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 -
Pro Circuit Clutch Springs Honda CRF450R 2013-2020 CSH13450-CS
PRO CIRCUIT
$83.95Stock 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 -
Pro Circuit Clutch Springs Kawasaki KX85 2001-2025 CSK09085
PRO CIRCUIT
$57.95Stock 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 -
Pro Circuit Clutch Springs Yamaha YZ250F 2019-2021 CSY19250-CS
PRO CIRCUIT
$83.95Stock 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 -
Pro Circuit Original Logo Van Decal 36x9 inches DC96VAN
PRO CIRCUIT
$9.95Make 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 -
Pro Circuit T-4 Exhaust System for Honda TRX90X 2009 4QH90090
PRO CIRCUIT
$370.95The 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 -
Pro Circuit T-4 Exhaust Kawasaki KLX125 2003-2016 4S03125
PRO CIRCUIT
$349.95The 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 -
Pro Circuit T-4 Slip-On Silencer 2003 KTM 525 SX 4T00400
PRO CIRCUIT
$523.95Stock 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 -
Pro Circuit T-4 Exhaust Honda CRF70F 2004-2012 4H00070
PRO CIRCUIT
$370.95The 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