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!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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GARDNER-WESTCOTT 1/8" NPT Hex Plug - Chrome 7-121PP-2
GARDNER-WESTCOTT
$5.95GARDNER-WESTCOTT 1/8" NPT Hex Plug Chrome 7-121PP-2Hex head, 1/8" NPT, Made in the U.S.A.DS245262- SKU:
- DS245262
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- CONNECTION TYPE:
- 1/8' NPT (MALE)
- COLOR/FINISH:
- CHROME
- TYPE:
- OIL DRAIN
- PRODUCT NAME:
- PLUG
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$5.95 -
GARDNER-WESTCOTT Breather Fitting - 1/4" NPT x 3/8" Hose 7-90TD-6X4
GARDNER-WESTCOTT
$9.95GARDNER-WESTCOTT Breather Fitting 1/4" NPT x 3/8" Hose 7-90TD-6X4Made in the U.S.A.DS245263- SKU:
- DS245263
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- FITTING
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- TYPE:
- BREATHER
- BASE FINISH:
- CHROME
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- POLISHED
- CONNECTION TYPE:
- 1/4' NPT (MALE)
- CONNECTION TYPE:
- 3/8' HOSE FITTING
- CONNECTOR ANGLE:
- STRAIGHT
$9.95 -
GARDNER-WESTCOTT Breather Fitting - 1/4" NPT - 90 Degree 7-116PSE-4
GARDNER-WESTCOTT
$16.95GARDNER-WESTCOTT Breather Fitting 1/4" NPT 90 Degree 7-116PSE-4Made in the U.S.A.DS245264- SKU:
- DS245264
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- CONNECTION TYPE:
- 1/4' NPT (FEMALE)
- CONNECTOR ANGLE:
- 90°
- PRODUCT NAME:
- FITTING
- RIDING STYLE:
- STREET
- TYPE:
- BREATHER
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- POLISHED
- CONNECTION TYPE:
- 1/4' NPT (MALE)
$16.95 -
GARDNER-WESTCOTT Breather Fitting - 1/4" NPT - 45 Degree 7-124PSE-4
GARDNER-WESTCOTT
$15.95GARDNER-WESTCOTT Breather Fitting 1/4" NPT 45 Degree 7-124PSE-4Made in the U.S.A.DS245265- SKU:
- DS245265
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- CONNECTION TYPE:
- 1/4' NPT (MALE)
- CONNECTOR ANGLE:
- 45°
- PRODUCT NAME:
- FITTING
- BASE FINISH:
- POLISHED
- TYPE:
- BREATHER
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- CONNECTION TYPE:
- 1/4' NPT (FEMALE)
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$15.95 -
GARDNER-WESTCOTT 1/4" - 1/8" NPT Fitting - Chrome 7-90TD-4X2
GARDNER-WESTCOTT
$9.95GARDNER-WESTCOTT 1/4" 1/8" NPT Fitting Chrome 7-90TD-4X2Chrome finish, Made in the U.S.A.DS245270- SKU:
- DS245270
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- CONNECTION TYPE:
- 1/4' NPT (MALE)
- PRODUCT NAME:
- FITTING
- TYPE:
- HOSE
- CONNECTION TYPE:
- 1/8' NPT (MALE)
- COLOR/FINISH:
- CHROME
- CONNECTOR ANGLE:
- STRAIGHT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$9.95 -
CYCLE CRAFT Ratchet Dogs 39-21251
CYCLE CRAFT
$6.95CYCLE CRAFT Ratchet Dogs 39-21251Kits contain main spring, cover plate, throw-out springs, pawls, D-washers, rope and pull handle, Parts fit all models ATC185/200; will also fit 90/110 models if different rope is used, Fit models ATC185 80, ATC185S...21251- SKU:
- 21251
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- RATCHET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- PULL START
- UNITS:
- EACH
$6.95 -
CYCLE CRAFT Friction Washer 39-21252
CYCLE CRAFT
$34.95CYCLE CRAFT Friction Washer 39-21252Kits contain main spring, cover plate, throw-out springs, pawls, D-washers, rope and pull handle, Parts fit all models ATC185/200; will also fit 90/110 models if different rope is used, Fit models ATC185 80, ATC185S...21252- SKU:
- 21252
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- STARTER
$34.95 -
CYCLE CRAFT Friction Plate 39-21253
CYCLE CRAFT
$14.95CYCLE CRAFT Friction Plate 39-21253Kits contain main spring, cover plate, throw-out springs, pawls, D-washers, rope and pull handle, Parts fit all models ATC185/200; will also fit 90/110 models if different rope is used, Fit models ATC185 80, ATC185S...21253- SKU:
- 21253
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- COVER PLATE
- TYPE:
- STARTER
$14.95 -
On Sale
CYLINDER WORKS Gasket Kit - Big Bore 51006-G01
CYLINDER WORKS
MSRP: $128.95Now: $118.76Was: $132.95CYLINDER WORKS Gasket Kit Big Bore 51006-G01Made in the U.S.A.09346005- SKU:
- 09346005
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE IMPERIAL:
- OVERSIZE (+3.00 MM)
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CYLINDER
- UNITS:
- KIT
MSRP: $128.95Now: $118.76Was: $132.95 -
On Sale
CYLINDER WORKS Cylinder - Standard CW50012
CYLINDER WORKS
MSRP: $355.95Now: $326.66Was: $365.95CYLINDER WORKS Cylinder Standard CW50012Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09311022- SKU:
- 09311022
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- UNITS:
- EACH
- CYLINDER DIAMETER METRIC:
- 39.50 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- CYLINDER DIAMETER:
- 39,50 MM
- ENGINE TYPE:
- 2-CYCLE
- STYLE:
- STANDARD
MSRP: $355.95Now: $326.66Was: $365.95 -
On Sale
CYLINDER WORKS Cylinder - Standard CW60007
CYLINDER WORKS
MSRP: $571.95Now: $524.66Was: $586.95CYLINDER WORKS Cylinder Standard CW60007Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09311023- SKU:
- 09311023
- Availability:
- Ships Same Business Day
- Weight:
- 7.15 LBS
- UNITS:
- EACH
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 93,00 MM
- PRODUCT NAME:
- CYLINDER
MSRP: $571.95Now: $524.66Was: $586.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore 40004-K03HC
CYLINDER WORKS
MSRP: $599.95Now: $367.00Was: $611.95CYLINDER WORKS Cylinder Kit Big Bore 40004-K03HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...09310708- SKU:
- 09310708
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- ENGINE TYPE:
- 4-CYCLE
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.2:1
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $599.95Now: $367.00Was: $611.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore 20010-K02HC
CYLINDER WORKS
MSRP: $614.95Now: $564.26Was: $631.95CYLINDER WORKS Cylinder Kit Big Bore 20010-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...09310709- SKU:
- 09310709
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.2:1
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
MSRP: $614.95Now: $564.26Was: $631.95Qty in Cart: 0Quantity:Price:MSRP: $614.95Now: $564.26Was: $631.95Subtotal: -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Honda 10002-K02
CYLINDER WORKS
MSRP: $533.95Now: $490.46Was: $548.95CYLINDER WORKS Cylinder Kit Standard Honda 10002-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310839- SKU:
- 09310839
- Availability:
- Ships Same Business Day
- Weight:
- 4.70 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- COMPRESSION RATIO IMPERIAL:
- 12.1:1
MSRP: $533.95Now: $490.46Was: $548.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Honda 10010-K02
CYLINDER WORKS
MSRP: $599.95Now: $550.76Was: $616.95CYLINDER WORKS Cylinder Kit Standard Honda 10010-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310840- SKU:
- 09310840
- Availability:
- Ships Same Business Day
- Weight:
- 4.10 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
MSRP: $599.95Now: $550.76Was: $616.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - Honda 10002-K02HC
CYLINDER WORKS
MSRP: $566.95Now: $520.16Was: $581.95CYLINDER WORKS Cylinder Kit Big Bore Honda 10002-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310841- SKU:
- 09310841
- Availability:
- Ships Same Business Day
- Weight:
- 4.70 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- RIDING STYLE:
- OFF-ROAD
MSRP: $566.95Now: $520.16Was: $581.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Arctic Cat 40001-K02
CYLINDER WORKS
MSRP: $588.95Now: $540.86Was: $604.95CYLINDER WORKS Cylinder Kit Standard Arctic Cat 40001-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310842- SKU:
- 09310842
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.3:1
- DISPLACEMENT:
- 400 CC
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
MSRP: $588.95Now: $540.86Was: $604.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore 40001-K02HC
CYLINDER WORKS
MSRP: $587.95Now: $539.96Was: $603.95CYLINDER WORKS Cylinder Kit Big Bore 40001-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...09310843- SKU:
- 09310843
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- DISPLACEMENT:
- 400 CC
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- RIDING STYLE:
- ATV
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $587.95Now: $539.96Was: $603.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - Polaris 61006-K01
CYLINDER WORKS
MSRP: $1,283.95Now: $1,178.96Was: $1,309.95CYLINDER WORKS Cylinder Kit Big Bore Polaris 61006-K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310844- SKU:
- 09310844
- Availability:
- Ships Same Business Day
- Weight:
- 9.65 LBS
- DISPLACEMENT:
- 1110 CC
- RIDING STYLE:
- UTV
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- CYLINDER DIAMETER:
- 98,00 MM
- CYLINDER DIAMETER METRIC:
- 98.00 MM
- ENGINE TYPE:
- 4-CYCLE
MSRP: $1,283.95Now: $1,178.96Was: $1,309.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Honda CW10011K01
CYLINDER WORKS
MSRP: $510.95Now: $468.86Was: $524.95CYLINDER WORKS Cylinder Kit Standard Honda CW10011K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310845- SKU:
- 09310845
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER:
- 79,00 MM
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.9:1
- CYLINDER DIAMETER METRIC:
- 79.00 MM
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
MSRP: $510.95Now: $468.86Was: $524.95Qty in Cart: 0Quantity:Price:MSRP: $510.95Now: $468.86Was: $524.95Subtotal:
