 
            Dirt Bike Engine
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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              COMETIC Top End Gasket Set C3395-ESTCOMETIC $68.95COMETIC Top End Gasket Set C3395-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342451- SKU:
- 09342451
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- 3.819'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
 $68.95Qty in Cart: 0Quantity:Price:$68.95Subtotal:
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              COMETIC Top End Gasket Set C3174-ESTCOMETIC $91.95COMETIC Top End Gasket Set C3174-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342432- SKU:
- 09342432
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 77.00 MM
- PRODUCT NAME:
- GASKET KIT
 $91.95Qty in Cart: 0Quantity:Price:$91.95Subtotal:
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              COMETIC Top End Gasket Set C7944-ESTCOMETIC $84.95COMETIC Top End Gasket Set C7944-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342426- SKU:
- 09342426
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 95.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
 $84.95Qty in Cart: 0Quantity:Price:$84.95Subtotal:
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              COMETIC Top End Gasket Set C3268-ESTCOMETIC $84.95COMETIC Top End Gasket Set C3268-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342420- SKU:
- 09342420
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE METRIC:
- 96.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
 $84.95
- 
              COMETIC Top End Gasket Set C3267-ESTCOMETIC $91.95COMETIC Top End Gasket Set C3267-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342414- SKU:
- 09342414
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE METRIC:
- 78.00 MM
- TYPE:
- TOP END
 $91.95
- 
              COMETIC Top End Gasket Set C7924-ESTCOMETIC $98.95COMETIC Top End Gasket Set C7924-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342410- SKU:
- 09342410
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE METRIC:
- 87.00 MM
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
 $98.95
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              COMETIC Top End Gasket Set C3187-ESTCOMETIC $64.95COMETIC Top End Gasket Set C3187-ESTTop end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342405- SKU:
- 09342405
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BORE SIZE METRIC:
- 66.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
 $64.95
- 
              COMETIC Top End Gasket Set C3416COMETIC $44.95COMETIC Top End Gasket Set C3416Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...09342395- SKU:
- 09342395
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BORE SIZE METRIC:
- 45.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
 $44.95
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              Cylinder Works Big Bore Gasket Kit Yamaha YFZ450 2004-2009 2012-2013 23001-G01CYLINDER WORKS $104.95CYLINDER WORKS Big Bore Gasket Kit 23001-G01 Experience enhanced performance and durability with the CYLINDER WORKS Big Bore Gasket Kit. This ready-to-install kit features direct bolt-on cylinders that seamlessly integrate with your existing setup,...09342387- SKU:
- 09342387
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- UTV
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
 $104.95
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              Cylinder Works Big Bore Gasket Kit for 2010-2017 Honda CRF250R 11007-G01CYLINDER WORKS $75.95CYLINDER WORKS Big Bore Gasket Kit 11007-G01 Elevate your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 11007-G01. Designed for seamless installation, this kit offers a perfect fit without the need for re-plating, ensuring your ride...09342383- SKU:
- 09342383
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- NICKEL SILICON CARBIDE
- BORE SIZE METRIC:
- OVERSIZED (+3.00 MM)
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- BIG BORE
 $75.95Qty in Cart: 0Quantity:Price:$75.95Subtotal:
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              Cylinder Works Big Bore Gasket Kit 79mm Bore 2005-2012 KTM 250 SX-F 51002-G01CYLINDER WORKS $132.95CYLINDER WORKS Big Bore Gasket Kit 51002-G01 Elevate your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 51002-G01. Designed for easy installation, this kit features direct bolt-on cylinders that replicate the quality and appearance of...09342370- SKU:
- 09342370
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- NICKEL SILICON CARBIDE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- TYPE:
- TOP END
 $132.95
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              Cylinder Works Big Bore Gasket Kit KTM 350 SX-F 2011-2012 51001-G01CYLINDER WORKS $138.95CYLINDER WORKS Big Bore Gasket Kit 51001-G01 Upgrade your engine performance with the CYLINDER WORKS Big Bore Gasket Kit 51001-G01. Designed for effortless installation, this kit features high-quality components that enhance durability and efficiency...09342369- SKU:
- 09342369
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- NICKEL SILICON CARBIDE
- STYLE:
- BIG BORE
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
 $138.95
- 
              ATHENA Top End Gasket Kit - KTM P400270600028ATHENA $77.95ATHENA Top End Gasket Kit KTM P400270600028Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas...09342346- SKU:
- 09342346
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
 $77.95
- 
              ATHENA Top End Gasket Kit - KTM P400270600045ATHENA $50.95ATHENA Top End Gasket Kit KTM P400270600045Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas...09342341- SKU:
- 09342341
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
 $50.95
- 
              ATHENA Complete Gasket Kit - KTM P400270850045ATHENA $116.95ATHENA Complete Gasket Kit KTM P400270850045Superior-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...09342337- SKU:
- 09342337
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
 $116.95
- 
              ATHENA Gasket Kit - CRF150R P400210160019ATHENA $64.95ATHENA Gasket Kit CRF150R P400210160019Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions, All...09341968- SKU:
- 09341968
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE METRIC:
- 69.00 MM
- TYPE:
- TOP END
- BORE SIZE:
- 69,00 MM
- DISPLACEMENT:
- 163.5 CC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
 $64.95
- 
              ATHENA Complete Gasket Kit - Kawasaki P400250850024ATHENA $185.95ATHENA Complete Gasket Kit Kawasaki P400250850024Superior-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...09341964- SKU:
- 09341964
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
 $185.95
- 
              Cylinder Works Standard Bore Gasket Kit 810944CYLINDER WORKS $74.10CYLINDER WORKS Standard Bore Gasket Kit 810944 Experience unparalleled performance with the CYLINDER WORKS Standard Bore Gasket Kit 810944. Designed for seamless installation, this kit features high-quality components that ensure your engine runs...09341939- SKU:
- 09341939
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- STYLE:
- STANDARD
- TYPE:
- TOP END
- UNITS:
- KIT
- MATERIAL:
- NICKEL SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
 $74.10
- 
              Cylinder Works Big Bore Gasket Kit for 2009-2016 Kawasaki KX250F 31004-G01CYLINDER WORKS $92.95CYLINDER WORKS Big Bore Gasket Kit 31004-G01 Enhance your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 31004-G01. This comprehensive kit offers a direct bolt-on solution, providing a seamless upgrade without the need for re-plating...09341929- SKU:
- 09341929
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE METRIC:
- OVERSIZED (+3.00 MM)
- MATERIAL:
- NICKEL SILICON CARBIDE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- TYPE:
- TOP END
 $92.95Qty in Cart: 0Quantity:Price:$92.95Subtotal:
- 
              K&S TECHNOLOGIES Water Pump Repair Gasket Kit - YZ250F 75-4004K&S TECHNOLOGIES $35.95K&S TECHNOLOGIES Water Pump Repair Gasket Kit YZ250F 75-4004Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model09341924- SKU:
- 09341924
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
 $35.95
 
             
                                     
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                                     
                                                                                     
                                                                                     
                                                                                    