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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JAMES GASKET Motor Gasket Set - XL 17026-91
JAMES GASKET
$195.95JAMES GASKET Motor Gasket Set XL 17026-91To-quality gaskets, oil seals, and o-rings necessary to rebuild an engine, Made in the U.S.A.20111001- SKU:
- 20111001
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- TYPE:
- COMPLETE
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET KIT
$195.95 -
JAMES GASKET Derby Cover Seal - Twin Cam 25416-99-DL
JAMES GASKET
$19.95JAMES GASKET Derby Cover Seal Twin Cam 25416-99-DLLatest additions to our line of high-quality genuine James gaskets, seals and O-rings, Cover seals are a seal, not a gasket, Cover seals are molded rubber, beaded oil seals with metal inserts and work...09350090- SKU:
- 09350090
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- APPLICATION:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
$19.95 -
JAMES GASKET Main Drive Gear Seal 12067-A
JAMES GASKET
$10.95JAMES GASKET Main Drive Gear Seal 12067-ATop quality main drive gear shaft sealsDS194088- SKU:
- DS194088
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- TRANSMISSION
- UNITS:
- EACH
- APPLICATION:
- SPROCKET
- APPLICATION:
- MAINSHAFT
- RIDING STYLE:
- STREET
$10.95 -
JAMES GASKET Rocker Cover Gasket - M8 JGI-25700372
JAMES GASKET
$24.95JAMES GASKET Rocker Cover Gasket M8 JGI-25700372JAMES GASKET Rocker Cover Gasket - M809345966- SKU:
- 09345966
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- ROCKER COVER
- UNITS:
- PAIR
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$24.95 -
JAMES GASKET Transmission Cover Gasket - FLT 34904-00-F
JAMES GASKET
$25.50JAMES GASKET Transmission Cover Gasket FLT 34904-00-FMade in the U.S.A.09344635- SKU:
- 09344635
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- MATERIAL:
- FOAMET
- TYPE:
- TRANSMISSION TOP COVER
$25.50 -
JAMES GASKET Top End Gasket Kit - 4" - EVO/Big Twin 17033-92-4
JAMES GASKET
$133.95JAMES GASKET Top End Gasket Kit 4" EVO/Big Twin 17033-92-4Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.09341717- SKU:
- 09341717
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- KIT
$133.95 -
JAMES GASKET Top End Gasket Kit - XL 17032-91-MLS
JAMES GASKET
$169.95JAMES GASKET Top End Gasket Kit XL 17032-91-MLSTop-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.09341588- SKU:
- 09341588
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$169.95 -
JAMES GASKET Drain Plug O-Ring ST-11900045-10
JAMES GASKET
$2.95JAMES GASKET Drain Plug O-Ring ST-11900045-10Drain plug o-ring for Harley Davidson models09351076- SKU:
- 09351076
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
$2.95 -
JAMES GASKET Primary Cover Gasket Kit 34901-07-K
JAMES GASKET
$75.95JAMES GASKET Primary Cover Gasket Kit 34901-07-KTop quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09341624- SKU:
- 09341624
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- TYPE:
- PRIMARY COVER
- UNITS:
- KIT
$75.95 -
JAMES GASKET Rocker Cover Gasket - XL 17030-89-X
JAMES GASKET
$91.95JAMES GASKET Rocker Cover Gasket XL 17030-89-XMade in the U.S.A.09341852- SKU:
- 09341852
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$91.95 -
JAMES GASKET Keihin Carb Rebuild Kit - CV 27006-88
JAMES GASKET
$60.95JAMES GASKET Keihin Carb Rebuild Kit CV 27006-88Includes all the necessary needles, O-rings, seals and gaskets etc. for a complete rebuildDS289109- SKU:
- DS289109
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR REBUILD
$60.95 -
JAMES GASKET Trans Cover Gasket with Seal - FXD 34917-90-X
JAMES GASKET
$33.95JAMES GASKET Trans Cover Gasket with Seal FXD 34917-90-XMade in the U.S.A.DS173193- SKU:
- DS173193
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION TOP COVER
- FEATURES:
- BEADED
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
$33.95 -
JAMES GASKET Air Cleaner Gasket - Twin Cam 29583-01-A
JAMES GASKET
$15.30JAMES GASKET Air Cleaner Gasket Twin Cam 29583-01-AMade in the U.S.A.09341617- SKU:
- 09341617
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- 10 PACK
- STYLE:
- AIR CLEANER
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- BACKPLATE
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
$15.30 -
JAMES GASKET Primary Seal/Gasket Kit 34955-04-K
JAMES GASKET
$39.95JAMES GASKET Primary Seal/Gasket Kit 34955-04-KTop quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09340952- SKU:
- 09340952
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- SILICONE
- TYPE:
- PRIMARY COVER
- UNITS:
- KIT
- FEATURES:
- BEADED
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET KIT
$39.95 -
JAMES GASKET Inner Primary Seal - Twin Cam 12052-A
JAMES GASKET
$18.10JAMES GASKET Inner Primary Seal Twin Cam 12052-AMade in the U.S.A.09350121- SKU:
- 09350121
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- INNER PRIMARY
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
$18.10 -
JAMES GASKET Primary Cover Gasket 34901-07
JAMES GASKET
$93.80JAMES GASKET Primary Cover Gasket 34901-07Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09341622- SKU:
- 09341622
- Availability:
- Ships Same Business Day
- Weight:
- 0.47 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- UNITS:
- 5 PACK
- TYPE:
- COVER
- MATERIAL:
- SILICONE
$93.80 -
JE PISTONS Piston Kit - 95" - Twin Cam 324716
JE PISTONS
$449.99JE PISTONS Piston Kit 95" Twin Cam 324716Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, JE designs are specifically engineered for extreme applications including...09105935- SKU:
- 09105935
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- DISPLACEMENT:
- 1545 CC
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.875'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- UNITS:
- KIT
$449.99 -
JE PISTONS Piston Kit 324910
JE PISTONS
$301.05JE PISTONS Piston Kit 324910Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105938- SKU:
- 09105938
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- PISTON KIT
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 97.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
$301.05 -
JE PISTONS Piston Kit 345192
JE PISTONS
$839.99JE PISTONS Piston Kit 345192Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105946- SKU:
- 09105946
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- BORE SIZE METRIC:
- 80.00 MM
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
- DISPLACEMENT:
- 998 CC
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- PISTON HEAD SHAPE:
- DISHED
- RIDING STYLE:
- UTV
- WALL THICKNESS IMPERIAL:
- 0.160'
$839.99 -
JE PISTONS Piston Kit - M8 370244
JE PISTONS
$449.99JE PISTONS Piston Kit M8 370244Forged from 2618-T6 aluminum for better aligned grain flow and higher tensile strength, Skirt coating aids in optimal break-in for performance longevity, High 11.0:1 compression ratio for improved performance, Accumulator...09106008- SKU:
- 09106008
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 114'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.937'
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4.375'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
$449.99
