Dirt Bike
Browse over 50,000+ off-roading dirt bike parts and gear ready to be delivered to your doorstep. We offer riding gear & apparel at great prices. Along with parts and tools you need to keep the bike on the track or trails. Shop the biggest names in the motocross industry from Renthal, Dunlop, Thor, Maxima, Pro Circuit, Bill's Pipes, FMF, Excel and so many more. From dirt bike engine parts to new clutches we have what you need to stay one step ahead of your competition. Have a fitment question? reach out to our phone line at (231) 767-5055
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On Sale
PROX Top End Gasket Set - Beta 35.7430
PROX
MSRP: $130.95Now: $106.00Was: $130.95When you're rebuilding your Beta's top end, a failed gasket means catastrophic oil loss, coolant leaks, and potential engine damage—none of which you can afford mid-season. The PROX Top End Gasket Set delivers precision-manufactured sealing surfaces...09347793- SKU:
- 09347793
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $130.95Now: $106.00Was: $130.95 -
On Sale
PROX Piston Kit - 78.97 mm - Honda CRF250R/CRF250RX 01.1350.A
PROX
MSRP: $188.95Now: $158.00Was: $188.95A worn or damaged piston compromises engine compression, throttle response, and overall reliability—especially critical in a high-revving 250cc four-stroke. The PROX Piston Kit delivers OEM-equivalent performance with precision CNC machining and...09106779- SKU:
- 09106779
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
MSRP: $188.95Now: $158.00Was: $188.95Qty in Cart: 0Quantity:Price:MSRP: $188.95Now: $158.00Was: $188.95Subtotal: -
On Sale
PROX Piston Kit - 53.95 mm - Yamaha YZ125/YZ125X 01.2232.A
PROX
MSRP: $121.95Now: $90.00Was: $121.95A worn or damaged piston directly compromises your YZ125/YZ125X's power delivery, compression, and engine reliability. The PROX 53.95 mm Piston Kit restores your engine to OEM performance specifications with precision-manufactured components engineered...09106780- SKU:
- 09106780
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $121.95Now: $90.00Was: $121.95 -
On Sale
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2448.A
PROX
MSRP: $210.95Now: $167.00Was: $210.95When your Yamaha WR450F or YZ450F demands more from its engine, a quality piston kit is non-negotiable. This PROX kit delivers precision-machined components engineered to exact OEM specifications, restoring lost compression and power while maximizing...09106781- SKU:
- 09106781
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
MSRP: $210.95Now: $167.00Was: $210.95Qty in Cart: 0Quantity:Price:MSRP: $210.95Now: $167.00Was: $210.95Subtotal: -
On Sale
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2450.A
PROX
MSRP: $221.95Now: $183.00Was: $221.95A piston kit is one of the most critical components in your engine's combustion chamber—it directly impacts power delivery, reliability, and longevity. The PROX 96.95 mm kit for your WR450F/YZ450F/YZ450FX delivers precision-engineered components machined...09106782- SKU:
- 09106782
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $221.95Now: $183.00Was: $221.95Qty in Cart: 0Quantity:Price:MSRP: $221.95Now: $183.00Was: $221.95Subtotal: -
On Sale
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2453.A
PROX
MSRP: $221.95Now: $183.00Was: $221.95A worn or damaged piston directly impacts your WR450F or YZ450F's compression ratio, throttle response, and overall reliability—especially under high-RPM racing conditions. This PROX piston kit restores OEM specifications with precision-machined...09106783- SKU:
- 09106783
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
MSRP: $221.95Now: $183.00Was: $221.95 -
On Sale
PROX Piston Kit - 77.96 mm - Kawasaki KX250/KX250X 01.4353.A
PROX
MSRP: $188.95Now: $158.00Was: $188.95The piston is the heart of your engine's combustion cycle—wear, scoring, or improper tolerances kill power and reliability. This PROX kit delivers OEM-equivalent precision for the Kawasaki KX250/KX250X, ensuring proper ring sealing, minimal blowby, and...09106787- SKU:
- 09106787
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $188.95Now: $158.00Was: $188.95 -
On Sale
PROX Piston Kit - 57.94 mm - Husqvarna TE150i | KTM 150EXC TPI 01.6241.A
PROX
MSRP: $139.95Now: $119.00Was: $139.95A worn or damaged piston directly compromises engine compression, throttle response, and overall reliability—especially critical on high-revving 150cc two-stroke engines. The PROX 57.94 mm Piston Kit delivers OEM-equivalent performance with Japanese...09106792- SKU:
- 09106792
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $139.95Now: $119.00Was: $139.95 -
On Sale
PROX Steel Plate Set - Gas Gas/Husqvarna/KTM 16.S50013
PROX
MSRP: $27.95Now: $22.00Was: $27.95Clutch plate wear is one of the fastest paths to power loss and unpredictable engagement in high-performance dirt bikes. The PROX Steel Plate Set delivers OEM-exact specifications, ensuring consistent friction characteristics and reliable clutch...11313932- SKU:
- 11313932
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $27.95Now: $22.00Was: $27.95 -
On Sale
PROX Steel Plate Set - Husqvarna/KTM 16.S51012
PROX
MSRP: $27.95Now: $22.00Was: $27.95Clutch plate wear is inevitable in high-demand riding, and degraded plates compromise both power delivery and rider safety. The PROX Steel Plate Set delivers OEM-spec friction surfaces that restore your clutch to factory performance standards,...11313933- SKU:
- 11313933
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
MSRP: $27.95Now: $22.00Was: $27.95 -
On Sale
PROX Steel Plate Set - Gas Gas/Husqvarna/KTM 16.S51019
PROX
MSRP: $56.95Now: $42.00Was: $56.95Clutch fade and slippage compromise acceleration and reliability—especially under demanding track or trail conditions. This ProX steel plate set is engineered to OEM specifications, ensuring consistent engagement and maximum power transfer without the...11313934- SKU:
- 11313934
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $56.95Now: $42.00Was: $56.95 -
On Sale
PROX Steel Plate Set - Gas Gas/Husqvarna/KTM 16.S53010
PROX
MSRP: $45.95Now: $34.00Was: $45.95Worn or glazed clutch plates rob you of engagement precision and consistent power delivery—especially critical in high-performance riding where clutch modulation separates clean shifts from sloppy ones. This PROX Steel Plate Set restores OEM-spec...11313935- SKU:
- 11313935
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $45.95Now: $34.00Was: $45.95 -
On Sale
PROX Steel Plate Set - 125 SE-R 16.S71018
PROX
MSRP: $69.95Now: $56.00Was: $69.95A worn or damaged clutch plate set directly impacts your 125 SE-R's engagement precision and overall reliability. This OEM-spec steel plate set restores factory performance characteristics, ensuring consistent power transfer without slippage or chatter...11313936- SKU:
- 11313936
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $69.95Now: $56.00Was: $69.95 -
On Sale
PROX Steel Plate Set - Sherco 16.S73018
PROX
MSRP: $78.95Now: $64.00Was: $78.95Clutch plate wear is inevitable, but downtime isn't. The PROX Steel Plate Set for Sherco 16.S73018 delivers OEM-specification performance when you need a complete replacement or are rebuilding your clutch system. These hardened steel plates maintain...11313937- SKU:
- 11313937
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
MSRP: $78.95Now: $64.00Was: $78.95 -
On Sale
PROX Piston Kit - 87.96 mm - Gas Gas | Husqvarna | KTM 01.6353.A
PROX
MSRP: $209.95Now: $195.00Was: $229.73Whether you're rebuilding a top-end after a hard race season or restoring a two-stroke to factory specifications, a precision piston kit is non-negotiable. The PROX 87.96 mm Piston Kit delivers OEM-quality components that restore compression, seal...09106793- SKU:
- 09106793
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $209.95Now: $195.00Was: $229.73 -
On Sale
PROX Piston Kit - 94.95 mm - Gas Gas | Husqvarna | KTM 01.6434.A
PROX
MSRP: $221.95Now: $183.00Was: $221.95A worn or damaged piston directly compromises engine compression, power delivery, and reliability—especially critical in high-demand 2-stroke applications. The PROX Piston Kit delivers OEM-grade precision machining and ring specifications, ensuring your...09106794- SKU:
- 09106794
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
MSRP: $221.95Now: $183.00Was: $221.95Qty in Cart: 0Quantity:Price:MSRP: $221.95Now: $183.00Was: $221.95Subtotal: -
On Sale
PROX Piston Kit - 94.95 mm - Husqvarna FE450 | KTM 450EXC-F 01.6440.A
PROX
MSRP: $221.95Now: $167.00Was: $221.95The piston is the heart of your engine's combustion process, and a worn or damaged unit directly compromises power delivery, fuel efficiency, and reliability. This PROX kit delivers OEM-quality components precision-machined to exact tolerances, ensuring...09106795- SKU:
- 09106795
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
MSRP: $221.95Now: $167.00Was: $221.95 -
On Sale
PROX Piston Kit - 94.96 mm - Gas Gas | Husqvarna | KTM 01.6443.A
PROX
MSRP: $214.95Now: $183.00Was: $214.95Engine wear demands precision replacement, and OEM-equivalent pistons are non-negotiable for maintaining compression, power delivery, and reliability. The PROX 94.96 mm piston kit delivers factory-spec performance across Gas Gas, Husqvarna, and KTM...09106796- SKU:
- 09106796
- Availability:
- Ships Same Business Day
- Weight:
- 0.83 LBS
MSRP: $214.95Now: $183.00Was: $214.95 -
On Sale
PROX Piston Kit - 94.95 mm - Gas Gas | Husqvarna | KTM 01.6513.A
PROX
MSRP: $221.95Now: $183.00Was: $221.95A worn or damaged piston directly impacts combustion efficiency, throttle response, and overall engine longevity—making a quality replacement essential for maintaining peak performance. The PROX 94.95 mm Piston Kit delivers OEM-spec precision with...09106797- SKU:
- 09106797
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
MSRP: $221.95Now: $183.00Was: $221.95 -
On Sale
PROX Piston Kit - 66.34 mm - Beta RR250/Xtrainer 250 01.7313.A
PROX
MSRP: $159.95Now: $136.00Was: $159.95When your Beta RR250 or Xtrainer 250 demands a fresh top-end rebuild, settling for substandard pistons compromises both reliability and performance. This PROX piston kit delivers OEM-quality engineering with precision CNC-machining and high-silicon...09106798- SKU:
- 09106798
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
MSRP: $159.95Now: $136.00Was: $159.95
