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
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
ATHENA Piston Kit S4F05400009A
ATHENA
MSRP: $129.95Now: $116.96Was: $129.95ATHENA Piston Kit S4F05400009ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...9100084- SKU:
- 9100084
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DOMED
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 53.95 MM
- ENGINE TYPE:
- 2-STROKE
- DISPLACEMENT:
- 125 CC
- TYPE:
- A
MSRP: $129.95Now: $116.96Was: $129.95 -
On Sale
ATHENA Piston Kit S4F05400011A
ATHENA
MSRP: $146.95Now: $132.26Was: $146.95ATHENA Piston Kit S4F05400011ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...9100090- SKU:
- 9100090
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE SIZE METRIC:
- 53.94 MM
- DISPLACEMENT:
- 124 CC
- TYPE:
- A
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON HEAD SHAPE:
- DOMED
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
MSRP: $146.95Now: $132.26Was: $146.95 -
On Sale
ATHENA Piston Kit S4F05400011B
ATHENA
MSRP: $146.95Now: $132.26Was: $146.95ATHENA Piston Kit S4F05400011BTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...9100091- SKU:
- 9100091
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 124 CC
- TYPE:
- B
- BORE SIZE METRIC:
- 53.95 MM
- COMPRESSION RATIO IMPERIAL:
- STOCK
- ENGINE TYPE:
- 2-STROKE
- PISTON HEAD SHAPE:
- DOMED
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $146.95Now: $132.26Was: $146.95 -
On Sale
ATHENA Piston Kit S4F06400001A
ATHENA
MSRP: $1,140.95Now: $1,026.86Was: $1,140.95ATHENA Piston Kit S4F06400001ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...9100103- SKU:
- 9100103
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 63.94 MM
- PISTON HEAD SHAPE:
- FLAT TOP
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- A
- DISPLACEMENT:
- 200 CC
MSRP: $1,140.95Now: $1,026.86Was: $1,140.95 -
On Sale
ATHENA Piston Kit S4F06400001B
ATHENA
MSRP: $161.95Now: $145.76Was: $161.95ATHENA Piston Kit S4F06400001BTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...9100104- SKU:
- 9100104
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- COMPRESSION RATIO IMPERIAL:
- STOCK
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 63.95 MM
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 200 CC
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- B
MSRP: $161.95Now: $145.76Was: $161.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250850028
ATHENA
MSRP: $143.95Now: $129.56Was: $143.95ATHENA Complete Gasket Kit Kawasaki P400250850028Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and superior...9343039- SKU:
- 9343039
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
MSRP: $143.95Now: $129.56Was: $143.95 -
ANDREWS EV13 Cam - Evolution 291113
ANDREWS
$242.95ANDREWS EV13 Cam Evolution 291113These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float, Bolt-in cam for street or touring use with more mid-range and upper-end power than the stock 88 EV cams, Uses stock springs;...DS199323- SKU:
- DS199323
- Availability:
- Ships Same Business Day
- Weight:
- 2.13 LBS
- EXHAUST OPEN IMPERIAL:
- 45°
- EXHAUST LIFT IMPERIAL:
- 0.495'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 106°
- INTAKE CLOSE IMPERIAL:
- 31°
- INTAKE DURATION IMPERIAL:
- 226°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.161'
- INTAKE LIFT IMPERIAL:
- 0.485'
- INTAKE LOBE CENTERLINE IMPERIAL:
- 98°
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 13°
- EXHAUST DURATION IMPERIAL:
- 238°
- INTAKE OPEN IMPERIAL:
- 15°
- APPLICATION:
- INTAKE
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.148'
- GRIND:
- EV13
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
$242.95 -
ANDREWS Low-Compression Cam - Big Twin 212150
ANDREWS
$242.95ANDREWS Low-Compression Cam Big Twin 212150Designed with a combination of shorter durations and higher lifts to offer the advantages of a broad torque output through the entire rpm range, Designed for hydraulics, but could be run with solids, Grind #1 is...DS199324- SKU:
- DS199324
- Availability:
- Ships Same Business Day
- Weight:
- 2.06 LBS
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 16°
- EXHAUST OPEN IMPERIAL:
- 36°
- GRIND:
- #1
- INTAKE DURATION IMPERIAL:
- 232°
- INTAKE LIFT IMPERIAL:
- SHOVEL: 0.427' PAN: 0.450'
- PRODUCT NAME:
- CAM
- EXHAUST DURATION IMPERIAL:
- 232°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.136'
- INTAKE LIFT AT TDC IMPERIAL:
- 0.136'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- EXHAUST LIFT IMPERIAL:
- SHOVEL: 0.427' PAN: 0.450'
- INTAKE CLOSE IMPERIAL:
- 36°
- INTAKE OPEN IMPERIAL:
- 16°
$242.95 -
ANDREWS Low-Compression Cam - Big Twin 212340
ANDREWS
$242.95ANDREWS Low-Compression Cam Big Twin 212340Designed with a combination of shorter durations and higher lifts to offer the advantages of a broad torque output through the entire rpm range, Designed for hydraulics, but could be run with solids, Grind #1 is...DS199325- SKU:
- DS199325
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 15°
- EXHAUST LIFT AT TDC IMPERIAL:
- SHOVEL: 0.133' PAN: 0.133'
- GRIND:
- #2
- INTAKE CLOSE IMPERIAL:
- 35°
- INTAKE OPEN IMPERIAL:
- 15°
- EXHAUST DURATION IMPERIAL:
- 230°
- EXHAUST LIFT IMPERIAL:
- SHOVEL: 0.490' PAN: 0.512'
- PRODUCT NAME:
- CAM
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- INTAKE LIFT AT TDC IMPERIAL:
- SHOVEL: 0.133' PAN: 0.133'
- EXHAUST OPEN IMPERIAL:
- 35°
- INTAKE DURATION IMPERIAL:
- 230°
- INTAKE LIFT IMPERIAL:
- SHOVEL: 0.490' PAN: 0.512
- UNITS:
- EACH
$242.95 -
ANDREWS Low-Compression Cam - Big Twin 212350
ANDREWS
$242.95ANDREWS Low-Compression Cam Big Twin 212350Designed with a combination of shorter durations and higher lifts to offer the advantages of a broad torque output through the entire rpm range, Designed for hydraulics, but could be run with solids, Grind #1 is...DS199326- SKU:
- DS199326
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 15°
- EXHAUST LIFT AT TDC IMPERIAL:
- SHOVEL: 0.133' PAN: 0.133'
- GRIND:
- #2
- INTAKE CLOSE IMPERIAL:
- 35°
- INTAKE OPEN IMPERIAL:
- 15°
- EXHAUST DURATION IMPERIAL:
- 230°
- EXHAUST LIFT IMPERIAL:
- SHOVEL: 0.490' PAN: 0.512'
- RIDING STYLE:
- STREET
- EXHAUST OPEN IMPERIAL:
- 35°
- INTAKE DURATION IMPERIAL:
- 230°
- INTAKE LIFT IMPERIAL:
- SHOVEL: 0.490' PAN: 0.512
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- INTAKE LIFT AT TDC IMPERIAL:
- SHOVEL: 0.133' PAN: 0.133'
$242.95 -
ANDREWS EV46 Cam - Evolution 291146
ANDREWS
$242.95ANDREWS EV46 Cam Evolution 291146These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float, Made in the U.S.A.DS199327- SKU:
- DS199327
- Availability:
- Ships Same Business Day
- Weight:
- 2.12 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- EXHAUST OPEN IMPERIAL:
- 49°
- TYPE:
- GEAR
- GRIND:
- EV46
- INTAKE LIFT AT TDC IMPERIAL:
- 0.207'
- INTAKE LOBE CENTERLINE IMPERIAL:
- 98°
- INTAKE OPEN IMPERIAL:
- 25°
- RIDING STYLE:
- STREET
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.163'
- EXHAUST LIFT IMPERIAL:
- 0.495'
- INTAKE CLOSE IMPERIAL:
- 41°
- INTAKE DURATION IMPERIAL:
- 246°
- INTAKE LIFT IMPERIAL:
- 0.495'
- EXHAUST CLOSE IMPERIAL:
- 17°
- EXHAUST DURATION IMPERIAL:
- 246°
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 106°
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
$242.95 -
ANDREWS AB Grind Cam - Big Twin 212335
ANDREWS
$242.95ANDREWS AB Grind Cam Big Twin 212335These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float, Made in the U.S.A.DS199328- SKU:
- DS199328
- Availability:
- Ships Same Business Day
- Weight:
- 2.02 LBS
- APPLICATION:
- EXHAUST
- EXHAUST LIFT AT TDC IMPERIAL:
- SHOVEL: 0.142' PAN: 0.150'
- EXHAUST LIFT IMPERIAL:
- SHOVEL: 0.450' PAN: 0.470'
- EXHAUST OPEN IMPERIAL:
- 43°
- INTAKE CLOSE IMPERIAL:
- 50°
- INTAKE OPEN IMPERIAL:
- 21°
- EXHAUST DURATION IMPERIAL:
- 256°
- INTAKE LIFT IMPERIAL:
- SHOVEL: 0.450' PAN: 0.470'
- RIDING STYLE:
- STREET
- INTAKE DURATION IMPERIAL:
- 244°
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 26°
- GRIND:
- AB
- INTAKE LIFT AT TDC IMPERIAL:
- SHOVEL: 0.156' PAN: 0.164'
- TYPE:
- GEAR
$242.95 -
ANDREWS PB+ Grind Cam - XL 214014
ANDREWS
$324.95ANDREWS PB+ Grind Cam XL 214014"PB+" exhaust cams only (#s 1 and 4), Use with stock P intake cams for bolt-in power with stock 1000cc engines; stock springs are okay and no head work is required, Made in the U.S.A., 81-E84 cam gear kits (with generators)...DS199345- SKU:
- DS199345
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- EXHAUST CLOSE IMPERIAL:
- 31°
- INTAKE LIFT IMPERIAL:
- 0.400'
- UNITS:
- PAIR
- EXHAUST LIFT IMPERIAL:
- 0.410'
- GRIND:
- PB+
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- EXHAUST DURATION IMPERIAL:
- 254°
- INTAKE CLOSE IMPERIAL:
- 40°
- INTAKE DURATION IMPERIAL:
- 254°
- INTAKE OPEN IMPERIAL:
- 34°
- APPLICATION:
- EXHAUST
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.208'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 96°
- EXHAUST OPEN IMPERIAL:
- 43°
$324.95 -
ANDREWS AB Grind Cam - Big Twin 212320
ANDREWS
$242.95ANDREWS AB Grind Cam Big Twin 212320These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float, Made in the U.S.A.DS199347- SKU:
- DS199347
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- GRIND:
- AB
- INTAKE DURATION IMPERIAL:
- 244°
- EXHAUST CLOSE IMPERIAL:
- 26°
- EXHAUST OPEN IMPERIAL:
- 43°
- INTAKE LIFT AT TDC IMPERIAL:
- SHOVEL: 0.156' PAN: 0.164'
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 256°
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- EXHAUST LIFT AT TDC IMPERIAL:
- SHOVEL: 0.142' PAN: 0.150'
- EXHAUST LIFT IMPERIAL:
- SHOVEL: 0.450' PAN: 0.470'
- INTAKE CLOSE IMPERIAL:
- 50°
- INTAKE LIFT IMPERIAL:
- SHOVEL: 0.450' PAN: 0.470'
- INTAKE OPEN IMPERIAL:
- 21°
$242.95 -
ACERBIS X-Power Cover Kit - White - KTM/Husqvarna 2726840002
ACERBIS
$67.95ACERBIS X-Power Cover Kit White KTM/Husqvarna 2726840002Engine crankcase and Ignition/clutch cover, Protects against dirt, debris and impact, Installs easily with stock crankcase and Ignition/clutch cover bolts, Molded openings for easy access to oil cap...9401768- SKU:
- 9401768
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MATERIAL:
- PLASTIC
- PRODUCT NAME:
- COVER
- TYPE:
- ENGINE
- COLOR/FINISH:
- WHITE
- MODEL:
- X-POWER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$67.95 -
ACERBIS X-Power Cover Kit - Black - KTM/Husqvarna 2732130001
ACERBIS
$69.95ACERBIS X-Power Cover Kit Black KTM/Husqvarna 2732130001Engine crankcase and Ignition/clutch cover, Protects against dirt, debris and impact, Installs easily with stock crankcase and Ignition/clutch cover bolts, Molded openings for easy access to oil cap...9401769- SKU:
- 9401769
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- TYPE:
- ENGINE
- COLOR/FINISH:
- BLACK
- MATERIAL:
- PLASTIC
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- X-POWER
- UNITS:
- KIT
$69.95 -
ACERBIS X-Power Cover Kit - Orange - KTM/Husqvarna 2732135226
ACERBIS
$67.95ACERBIS X-Power Cover Kit Orange KTM/Husqvarna 2732135226Engine crankcase and Ignition/clutch cover, Protects against dirt, debris and impact, Installs easily with stock crankcase and Ignition/clutch cover bolts, Molded openings for easy access to oil...9401770- SKU:
- 9401770
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- ORANGE
- MODEL:
- X-POWER
- TYPE:
- ENGINE
- MATERIAL:
- PLASTIC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$67.95 -
ACERBIS X-Power Cover Kit - White - KTM/Husqvarna 2732130002
ACERBIS
$67.95ACERBIS X-Power Cover Kit White KTM/Husqvarna 2732130002Engine crankcase and Ignition/clutch cover, Protects against dirt, debris and impact, Installs easily with stock crankcase and Ignition/clutch cover bolts, Molded openings for easy access to oil cap...9401771- SKU:
- 9401771
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- PRODUCT NAME:
- COVER
- MATERIAL:
- PLASTIC
- COLOR/FINISH:
- WHITE
- MODEL:
- X-POWER
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$67.95 -
ACERBIS X-Power Cover Kit - Black - Honda 2856840001
ACERBIS
$69.95ACERBIS X-Power Cover Kit Black Honda 2856840001Engine crankcase and Ignition/clutch cover, Protects against dirt, debris and impact, Installs easily with stock crankcase and Ignition/clutch cover bolts, Molded openings for easy access to oil cap and...9401994- SKU:
- 9401994
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MATERIAL:
- PLASTIC
- TYPE:
- ENGINE
- MODEL:
- X-POWER
- PRODUCT NAME:
- COVER
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
$69.95 -
ACERBIS X-Power Cover Kit - Red - Honda 2856840227
ACERBIS
$67.95ACERBIS X-Power Cover Kit Red Honda 2856840227Engine crankcase and Ignition/clutch cover, Protects against dirt, debris and impact, Installs easily with stock crankcase and Ignition/clutch cover bolts, Molded openings for easy access to oil cap and...9401995- SKU:
- 9401995
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- COLOR/FINISH:
- RED
- MATERIAL:
- PLASTIC
- MODEL:
- X-POWER
- TYPE:
- ENGINE
- UNITS:
- KIT
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
$67.95Qty in Cart: 0Quantity:Price:$67.95Subtotal:
