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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Dirt Bike Cams and Parts
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Dirt Bike Connecting Rods and Parts
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Dirt Bike Crankcases and Parts
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Dirt Bike Crankshafts and Parts
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Dirt Bike Cylinder Heads and Parts
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Dirt Bike Cylinders and Parts
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Dirt Bike Engine Bearings
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Dirt Bike Engine Covers
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Dirt Bike Engine Gaskets and Kits
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Dirt Bike Engine Rebuild Kits
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Dirt Bike Engine Seals - Orings and Kits
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Dirt Bike Engine Valves and Parts
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Dirt Bike Flywheel and Rod Assemblies
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Dirt Bike Fuel Filters
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Dirt Bike Miscellaneous Engine Parts
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Dirt Bike Oil Coolers
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Dirt Bike Oil Filters
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Dirt Bike Oil Lines
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Dirt Bike Oil Pumps
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Dirt Bike Piston and Ring Kits
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Dirt Bike Piston Rings Only
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Dirt Bike Wrist Pins and Circlips
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- Price
- Subtotal
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JAMES GASKET Motor Gasket Kit - 88" 17053-99-X
JAMES GASKET
$138.95JAMES GASKET Motor Gasket Kit 88" 17053-99-XContain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.20112098- SKU:
- 20112098
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 0.91 MM
- TYPE:
- COMPLETE
- TYPE:
- MOTOR
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,036'
- BORE SIZE IMPERIAL:
- 3.750'
$138.95 -
DRAG SPECIALTIES Piston - Twin Cam 21988-07+.005
DRAG SPECIALTIES
$111.95DRAG SPECIALTIES Piston Twin Cam 21988-07+.005OEM quality cast aluminum alloy construction, Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines, Ideal for OEM replacement,...9110018- SKU:
- 9110018
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- BORE - OVERSIZE:
- +0,005'
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.755'
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- PISTON DIAMETER IMPERIAL:
- 3.755'
- PRODUCT NAME:
- PISTON
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$111.95 -
DRAG SPECIALTIES Piston - Twin Cam 21988-07+.010
DRAG SPECIALTIES
$111.95DRAG SPECIALTIES Piston Twin Cam 21988-07+.010OEM quality cast aluminum alloy construction, Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines, Ideal for OEM replacement,...9110019- SKU:
- 9110019
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE - OVERSIZE:
- +0,010'
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- PISTON DIAMETER IMPERIAL:
- 3.760'
- BORE SIZE IMPERIAL:
- 3.760'
- PRODUCT NAME:
- PISTON
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$111.95 -
GARDNER-WESTCOTT Male Connector - 3/16" x 1/8" NPT 7-48IC-3X2
GARDNER-WESTCOTT
$7.95GARDNER-WESTCOTT Male Connector 3/16" x 1/8" NPT 7-48IC-3X2Chrome finish, Made in the U.S.A.DS245250- SKU:
- DS245250
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- FITTING
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- CONNECTOR ANGLE:
- STRAIGHT
- CONNECTION TYPE:
- 1/8' NPT (MALE)
$7.95 -
GARDNER-WESTCOTT Union - 3/8" - Chrome 7-92HB-6X6
GARDNER-WESTCOTT
$8.95GARDNER-WESTCOTT Union 3/8" Chrome 7-92HB-6X6Chrome finish, Made in the U.S.A.DS245252- SKU:
- DS245252
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- CONNECTION TYPE:
- 3/8' HOSE FITTING
- UNITS:
- EACH
- CONNECTOR ANGLE:
- STRAIGHT
- TYPE:
- HOSE
- PRODUCT NAME:
- FITTING
$8.95 -
GARDNER-WESTCOTT 3/8" - NPT Plug 7-107CSP-6
GARDNER-WESTCOTT
$7.95GARDNER-WESTCOTT 3/8" NPT Plug 7-107CSP-6Chrome finish, Made in the U.S.A.DS245261- SKU:
- DS245261
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- CONNECTION TYPE:
- 3/8' NPT (MALE)
- CONNECTOR ANGLE:
- STRAIGHT
- PRODUCT NAME:
- FITTING
- TYPE:
- PLUG
- UNITS:
- EACH
$7.95 -
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 -
GOLAN PRODUCTS Mini Fuel Filter - Black - 1/4" 60-250C-BLACK
GOLAN PRODUCTS
$64.95Machined from 6061 T-6 billet aluminum, Filter element is made from pleated 304 stainless steel; filters down to 10 microns and still flows six gallon a minute, Replacement filter element available separately - see Related Products, Made in the U.S.A.7070048- SKU:
- 7070048
- Weight:
- 1.00 LBS
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
CYCLE CRAFT Big Bore Kit - Evolution - XL 1200 13322A
CYCLE CRAFT
$309.95CYCLE CRAFT Big Bore Kit Evolution XL 1200 13322AUpgrades an 883 or 1100 XL to a full 1200cc, Comes complete with 9.0:1 compression pistons, rings, all the necessary gaskets and a special combustion chamber template for proper installation, Will work on...DS750745- SKU:
- DS750745
- Availability:
- Ships Same Business Day
- Weight:
- 3.74 LBS
$309.95Qty in Cart: 0Quantity:Price:$309.95Subtotal: -
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: $131.95CYLINDER WORKS Gasket Kit Big Bore 51006-G01Made in the U.S.A.9346005- SKU:
- 9346005
- 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: $131.95 -
On Sale
CYLINDER WORKS Cylinder - Standard CW50012
CYLINDER WORKS
MSRP: $355.95Now: $326.66Was: $362.95CYLINDER 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.9311022- SKU:
- 9311022
- 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: $362.95 -
On Sale
CYLINDER WORKS Cylinder - Standard CW60007
CYLINDER WORKS
MSRP: $571.95Now: $524.66Was: $582.95CYLINDER 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.9311023- SKU:
- 9311023
- 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: $582.95 -
On Sale
CYLINDER WORKS Cylinder Kit 10007-K03HC
CYLINDER WORKS
MSRP: $579.95Now: $521.96Was: $579.95CYLINDER WORKS Cylinder Kit 10007-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 engine...9310707- SKU:
- 9310707
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- CYLINDER DIAMETER METRIC:
- 76.80 MM
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- 14.3:1
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
- BORE SIZE METRIC:
- 76.80 MM
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 76,80 MM
- ENGINE TYPE:
- 4-CYCLE
MSRP: $579.95Now: $521.96Was: $579.95Qty in Cart: 0Quantity:Price:MSRP: $579.95Now: $521.96Was: $579.95Subtotal:
