Dirt Bike Engine
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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PROX Top End Gasket Set - Beta 35.7416
PROX
$125.08Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347790- SKU:
- 09347790
- Weight:
- 0.15 LBS
$125.08 -
PROX Top End Gasket Set - Beta 35.7420
PROX
$125.08Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347791- SKU:
- 09347791
- Weight:
- 0.15 LBS
$125.08 -
PROX Top End Gasket Set - Beta 35.7426
PROX
$125.08Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347792- SKU:
- 09347792
- Weight:
- 0.15 LBS
$125.08 -
PROX Top End Gasket Set - Beta 35.7430
PROX
$125.08Top End Gasket Set - Beta Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347793- SKU:
- 09347793
- Weight:
- 0.15 LBS
$125.08 -
PROX Piston Kit - 78.97 mm - Honda CRF250R/CRF250RX 01.1350.A
PROX
MSRP: $197.05$185.95Piston Kit - 78.97 mm - Honda CRF250R/CRF250RX Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106779- SKU:
- 09106779
- Weight:
- 0.53 LBS
MSRP: $197.05$185.95 -
PROX Piston Kit - 53.95 mm - Yamaha YZ125/YZ125X 01.2232.A
PROX
MSRP: $106.20$105.95Piston Kit - 53.95 mm - Yamaha YZ125/YZ125X Manufactured in Japan and designed to be OEM replacement, Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances, Kit includes...09106780- SKU:
- 09106780
- Weight:
- 0.45 LBS
MSRP: $106.20$105.95Qty in Cart: 0Quantity:Price:MSRP: $106.20$105.95Subtotal: -
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2448.A
PROX
MSRP: $212.46$195.95Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106781- SKU:
- 09106781
- Weight:
- 0.55 LBS
MSRP: $212.46$195.95 -
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2450.A
PROX
$214.95Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106782- SKU:
- 09106782
- Weight:
- 1.00 LBS
$214.95 -
PROX Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX 01.2453.A
PROX
$214.95Piston Kit - 96.95 mm - Yamaha WR450F/YZ450F/YZ450FX Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106783- SKU:
- 09106783
- Weight:
- 0.93 LBS
$214.95 -
PROX Piston Kit - 77.96 mm - Kawasaki KX250/KX250X 01.4351.A
PROX
$185.95Piston Kit - 77.96 mm - Kawasaki KX250/KX250X Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106786- SKU:
- 09106786
- Weight:
- 0.40 LBS
$185.95 -
PROX Piston Kit - 77.96 mm - Kawasaki KX250/KX250X 01.4353.A
PROX
$185.95Piston Kit - 77.96 mm - Kawasaki KX250/KX250X Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106787- SKU:
- 09106787
- Weight:
- 0.50 LBS
$185.95Qty in Cart: 0Quantity:Price:$185.95Subtotal: -
PROX Piston Kit - 57.94 mm - Husqvarna TE150i | KTM 150EXC TPI 01.6241.A
PROX
MSRP: $144.22$139.95Piston Kit - 57.94 mm - Husqvarna TE150i | KTM 150EXC TPI Manufactured in Japan and designed to be OEM replacement, Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances,...09106792- SKU:
- 09106792
- Weight:
- 0.50 LBS
MSRP: $144.22$139.95 -
PROX Piston Kit - 87.96 mm - Gas Gas | Husqvarna | KTM 01.6353.A
PROX
$229.73Piston Kit - 87.96 mm - Gas Gas | Husqvarna | KTM Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106793- SKU:
- 09106793
- Weight:
- 0.45 LBS
$229.73 -
PROX Piston Kit - 94.95 mm - Gas Gas | Husqvarna | KTM 01.6434.A
PROX
MSRP: $229.73$214.95Piston Kit - 94.95 mm - Gas Gas | Husqvarna | KTM Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106794- SKU:
- 09106794
- Weight:
- 1.00 LBS
MSRP: $229.73$214.95 -
PROX Piston Kit - 94.95 mm - Husqvarna FE450 | KTM 450EXC-F 01.6440.A
PROX
MSRP: $212.75$195.95Piston Kit - 94.95 mm - Husqvarna FE450 | KTM 450EXC-F Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact...09106795- SKU:
- 09106795
- Weight:
- 0.50 LBS
MSRP: $212.75$195.95 -
PROX Piston Kit - 94.96 mm - Gas Gas | Husqvarna | KTM 01.6443.A
PROX
MSRP: $229.73$214.95Piston Kit - 94.96 mm - Gas Gas | Husqvarna | KTM Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106796- SKU:
- 09106796
- Weight:
- 0.83 LBS
MSRP: $229.73$214.95 -
PROX Piston Kit - 94.95 mm - Gas Gas | Husqvarna | KTM 01.6513.A
PROX
MSRP: $222.41$214.95Piston Kit - 94.95 mm - Gas Gas | Husqvarna | KTM Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106797- SKU:
- 09106797
- Weight:
- 0.78 LBS
MSRP: $222.41$214.95 -
PROX Piston Kit - 66.34 mm - Beta RR250/Xtrainer 250 01.7313.A
PROX
$159.95Piston Kit - 66.34 mm - Beta RR250/Xtrainer 250 Manufactured in Japan and designed to be OEM replacement, Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances, Kit...09106798- SKU:
- 09106798
- Weight:
- 0.75 LBS
$159.95 -
PROX Piston Kit - 75.96 mm - Sherco 250SE-F/250SEF-R 01.7314.A
PROX
$209.99Piston Kit - 75.96 mm - Sherco 250SE-F/250SEF-R Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106799- SKU:
- 09106799
- Weight:
- 0.50 LBS
$209.99 -
PROX Piston Kit - 83.95 mm - Sherco 300SE-F/300SEF-R 01.7324.A
PROX
$209.95Piston Kit - 83.95 mm - Sherco 300SE-F/300SEF-R Kit includes piston, rings, wrist pin, circlips and instruction sheet, The piston is precision machined on state of the art CNC equipment, Piston rings are made by OEM factories to exact specifications09106800- SKU:
- 09106800
- Weight:
- 0.40 LBS
$209.95
