Dirt Bike Engine
Explore our selection for dirt bike parts for adding horsepower or reliability to a dirt bike's engine. We feature engine parts from Wiseco, Vertex, and more common engine part manufacturers. Get new pistons and gasket kits for re-freshening engines to withstand any conditions you put your bike through!
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PROX Piston Kit 01.1408.200
PROX
$185.95PROX Piston Kit 01.1408.200Manufactured 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, Pistons supplied in a kit...09030821- SKU:
- 09030821
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 91.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON SIZE METRIC:
- +2.00 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
$185.95 -
On Sale
UFO Clutch Cover - Orange - KTM AC02411
UFO
MSRP: $31.95Now: $19.00Was: $31.95UFO Clutch Cover Orange KTM AC02411Constructed of abrasion/temperature-resistant PA6 plastic to give optimum protection against impacts, Perfect fit to the stock clutch cover (will not fit with aftermarket covers), Slim design to minimize interference...09401589- SKU:
- 09401589
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- PLASTIC
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- ORANGE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
MSRP: $31.95Now: $19.00Was: $31.95 -
On Sale
UFO Clutch Cover - Orange - KTM AC02412
UFO
MSRP: $31.95Now: $19.00Was: $31.95UFO Clutch Cover Orange KTM AC02412Constructed of abrasion/temperature-resistant PA6 plastic to give optimum protection against impacts, Perfect fit to the stock clutch cover (will not fit with aftermarket covers), Slim design to minimize interference...09401590- SKU:
- 09401590
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- PLASTIC
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- ORANGE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
MSRP: $31.95Now: $19.00Was: $31.95 -
On Sale
VERTEX Piston Kit - Standard 22877B
VERTEX
MSRP: $112.95Now: $103.46Was: $115.95VERTEX Piston Kit Standard 22877BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09100941- SKU:
- 09100941
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- PISTON KIT
- ENGINE TYPE:
- 2-STROKE
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 48.00 MM
- PISTON DIAMETER METRIC:
- 47.95 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 85 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
MSRP: $112.95Now: $103.46Was: $115.95 -
On Sale
VERTEX Piston Kit - Standard 22991A
VERTEX
MSRP: $139.95Now: $128.66Was: $143.95VERTEX Piston Kit Standard 22991AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09100984- SKU:
- 09100984
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 105 CC
- PISTON DIAMETER METRIC:
- 51.95 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 52.00 MM
- STYLE:
- CAST REPLICA
MSRP: $139.95Now: $128.66Was: $143.95 -
On Sale
VERTEX Piston Kit 22532B
VERTEX
MSRP: $161.95Now: $148.46Was: $165.95VERTEX Piston Kit 22532BAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09100987- SKU:
- 09100987
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PISTON DIAMETER METRIC:
- 54.20 MM
- PRODUCT NAME:
- PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 54.25 MM
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
MSRP: $161.95Now: $148.46Was: $165.95 -
On Sale
VERTEX Piston Kit - Standard 23383A
VERTEX
MSRP: $177.95Now: $163.76Was: $182.95VERTEX Piston Kit Standard 23383AAll pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09100990- SKU:
- 09100990
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- STYLE:
- CAST REPLICA
- PISTON DIAMETER METRIC:
- 55.95 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- CYLINDER DIAMETER METRIC:
- 56.00 MM
- DISPLACEMENT:
- 144 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $177.95Now: $163.76Was: $182.95 -
WISECO Piston Kit - Standard - KX 250 F 40019M07700
WISECO
$224.95Wiseco 40019M07700 Piston Kit Unlock the true potential of your Kawasaki KX250F with the Wiseco 40019M07700 Piston Kit, expertly engineered to deliver unbeatable durability, precision, and performance. Designed for high-performance applications, this...09102895- SKU:
- 09102895
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 53.60 MM
- UNITS:
- EACH
- DISPLACEMENT:
- 250 CC
$224.95 -
WISECO Piston - Yamaha - +1.00 mm 234M07100
WISECO
$199.95Wiseco 234M07100 Piston Kit Elevate your 2-stroke engine's performance with the Wiseco 234M07100 Piston Kit, engineered for riders demanding maximum durability, precision, and efficiency. This high-quality piston kit is ideal for enhancing the power and...234M07100- SKU:
- 234M07100
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- DISPLACEMENT:
- 246 CC
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- BORE - OVERSIZE:
- +1,00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 71.00 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 64.00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON DIAMETER METRIC:
- 70.95 MM
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
$199.95 -
WISECO Piston Kit 40056M08800
WISECO
$244.95Wiseco 40056M08800 Piston Kit Unleash the full potential of your motorcycle with the Wiseco 40056M08800 Piston Kit, meticulously crafted for riders who demand maximum durability, precision, and power. Designed for high-performance applications, this...09102897- SKU:
- 09102897
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- STROKE LENGTH METRIC:
- 57.50 MM
- BORE SIZE METRIC:
- 88.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.3:1
- DISPLACEMENT:
- 350 CC
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$244.95 -
WISECO Piston - Yamaha - Standard 235M05200
WISECO
$166.95Wiseco 235M05200 Piston Kit Boost the performance of your motorcycle with the Wiseco 235M05200 Piston Kit, designed for riders who demand the best in durability, precision, and efficiency. Crafted from premium materials and engineered for excellence,...235M05200- SKU:
- 235M05200
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- DISPLACEMENT:
- 98 CC
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 51.95 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 45.60 MM
- BORE SIZE METRIC:
- 52.00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$166.95 -
WISECO Piston Kit - Yamaha XT/TT 4045M08700
WISECO
$239.95Wiseco 4045M08700 Piston Kit Revamp your motorcycle's performance with the Wiseco 4045M08700 Piston Kit, designed for riders seeking exceptional durability, precision, and power. Crafted for high-performance applications, this piston kit ensures your...09102899- SKU:
- 09102899
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- STREET
- STROKE LENGTH METRIC:
- 84.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 499 CC
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 87.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
$239.95 -
WISECO Piston - Standard - Suzuki RM 250 723M06640
WISECO
$199.95Wiseco 723M06640 Pro-Lite Piston Kit Maximize the performance of your 2-stroke engine with the Wiseco 723M06640 Pro-Lite Piston Kit, a premium solution for riders seeking ultimate durability and efficiency. Engineered to perfection, this piston kit is...723M06640- SKU:
- 723M06640
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 66.40 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- DISPLACEMENT:
- 249 CC
- PRODUCT NAME:
- PISTON
- STROKE LENGTH:
- 72,00 MM
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
$199.95 -
WISECO Piston 797M05400
WISECO
$144.95Wiseco 797M05400 Pro-Lite Piston Kit Elevate your riding experience with the Wiseco 797M05400 Pro-Lite Piston Kit, the ultimate choice for 2-stroke engine enthusiasts. This high-performance piston kit is engineered to deliver outstanding power,...797M05400- SKU:
- 797M05400
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 54.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
$144.95 -
WISECO Piston - +2.00 mm - Yamaha YZ 125 797M05600
WISECO
$174.95Wiseco 797M05600 Pro-Lite Piston Kit Revitalize your motorcycle’s engine with the Wiseco 797M05600 Pro-Lite Piston Kit, a premium choice for riders seeking unparalleled power, precision, and durability. Designed for 2-stroke engine efficiency, this...797M05600- SKU:
- 797M05600
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- BORE SIZE METRIC:
- 56.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- DISPLACEMENT:
- 125 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH:
- 54,50 MM
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
$174.95 -
WISECO Piston 809M08000
WISECO
$149.95Wiseco 809M08000 Piston Kit Unlock the ultimate performance of your personal watercraft with the Wiseco 809M08000 Piston Kit, a trusted choice for water enthusiasts and high-performance riders. Built to excel under the most demanding conditions, this...809M08000- SKU:
- 809M08000
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- WATERCRAFT
- DISPLACEMENT:
- 743 CC
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 80.00 MM
- DISPLACEMENT:
- 1071 CC
- PRODUCT NAME:
- PISTON
$149.95 -
WISECO Crankshaft with Bearing and Gasket WPC128A
WISECO
$479.95WISECO Crankshaft with Bearing and Gasket WPC128AInclude crankshaft, top end bearing, premium main bearings and a complete bottom end gasket set that includes all seals and gaskets needed to do the job, Only one part number to stock and order,...09210108- SKU:
- 09210108
- Availability:
- Ships Same Business Day
- Weight:
- 12.96 LBS
- TYPE:
- BOTTOM END
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$479.95 -
WISECO Crankshaft with Bearing and Gasket WPC128B
WISECO
$479.95WISECO Crankshaft with Bearing and Gasket WPC128BInclude crankshaft, top end bearing, premium main bearings and a complete bottom end gasket set that includes all seals and gaskets needed to do the job, Only one part number to stock and order,...09210109- SKU:
- 09210109
- Availability:
- Ships Same Business Day
- Weight:
- 12.51 LBS
- TYPE:
- BOTTOM END
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$479.95 -
WISECO Crankshaft with Bearing and Gasket WPC135
WISECO
$399.95WISECO Crankshaft with Bearing and Gasket WPC135Include crankshaft, top end bearing, premium main bearings and a complete bottom end gasket set that includes all seals and gaskets needed to do the job, Only one part number to stock and order, Crankshafts...09210110- SKU:
- 09210110
- Availability:
- Ships Same Business Day
- Weight:
- 9.43 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
- UNITS:
- KIT
- TYPE:
- BOTTOM END
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$399.95 -
WISECO Crankshaft with Bearing and Gasket WPC141
WISECO
$574.95WISECO Crankshaft with Bearing and Gasket WPC141Include crankshaft, top end bearing, premium main bearings and a complete bottom end gasket set that includes all seals and gaskets needed to do the job, Only one part number to stock and order, Crankshafts...09210111- SKU:
- 09210111
- Availability:
- Ships Same Business Day
- Weight:
- 10.11 LBS
- STROKE LENGTH METRIC:
- 53.60 MM
- TYPE:
- BOTTOM END
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$574.95
