Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. 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 to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Rekluse Clutch Cover Honda CR250R 1992-2001 RMS-369
REKLUSE
$189.00Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted to deliver exceptional strength and performance. Designed for the adventurous rider, this clutch cover withstands the toughest terrains while enhancing your bike's oil...09401809- SKU:
- 09401809
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$189.00 -
Rekluse Clutch Cover Husqvarna FC 450 2016-2021 RMS-380
REKLUSE
$189.00Elevate your off-road experience with the REKLUSE Clutch Cover, designed specifically for Husqvarna and KTM 450/501 models. This premium component combines exceptional durability with a sleek aesthetic, ensuring you can tackle any terrain with confidence...09401816- SKU:
- 09401816
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$189.00 -
Rekluse Clutch Cover Husqvarna TE 250 2014-2016 RMS-386
REKLUSE
$189.00Elevate your riding experience with the REKLUSE Clutch Cover, expertly crafted for the TE/TC/KTM250 models. Designed for maximum resilience, this clutch cover not only enhances performance but also adds a sleek touch to your bike. With its advanced...09401817- SKU:
- 09401817
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- CLUTCH
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$189.00 -
Hiflofiltro Oil Filter for Kawasaki KLR650 1987-2025 HF123
HIFLOFILTRO
$4.39Experience superior engine protection with the HIFLOFILTRO Oil Filter HF123, designed to ensure optimal performance and longevity. Crafted from high-quality materials, this premium oil filter effectively traps contaminants while allowing for smooth oil...HF123- SKU:
- HF123
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BASE COLOR:
- RED
- PRODUCT NAME:
- OIL FILTER
- LENGTH METRIC:
- 57 MM
- STYLE:
- PREMIUM
- WIDTH METRIC:
- 55 MM
$4.39 -
Hiflofiltro Oil Filter for Suzuki DR350 1990-1999 HF136
HIFLOFILTRO
$5.18Experience superior engine protection and performance with the HIFLOFILTRO Oil Filter HF136. Engineered with high-quality materials, this premium oil filter ensures optimal filtration and longevity, keeping your engine running smoothly. Designed for easy...HF136- SKU:
- HF136
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- COLOR/FINISH:
- RED
- UNITS:
- EACH
- WIDTH METRIC:
- 60 MM
- BASE COLOR:
- RED
- LENGTH METRIC:
- 33 MM
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- PREMIUM
$5.18 -
HifloFiltro Oil Filter for Kawasaki KX250F 2004-2020 HF207
HIFLOFILTRO
$5.00Experience superior engine performance with the HIFLOFILTRO Oil Filter HF207. Designed for optimal filtration and durability, this premium oil filter ensures your engine runs smoothly and efficiently. Trust in this high-quality filter to extend the life...07120028- SKU:
- 07120028
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STYLE:
- PREMIUM
- BASE COLOR:
- RED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- LENGTH METRIC:
- 44 MM
- PRODUCT NAME:
- OIL FILTER
- WIDTH METRIC:
- 38 MM
- TYPE:
- CARTRIDGE
$5.00 -
Hiflofiltro Oil Filter for Yamaha YFZ450R 2009-2019 HF140
HIFLOFILTRO
$5.32Experience superior engine protection with the HIFLOFILTRO Oil Filter HF140. Designed for high performance, this premium oil filter ensures optimal filtration and longevity, keeping your engine running smoothly. Trust in HIFLOFILTRO's commitment to...07120297- SKU:
- 07120297
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- BASE COLOR:
- YELLOW
- STYLE:
- PREMIUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- CARTRIDGE
- WIDTH METRIC:
- 38 MM
- COLOR/FINISH:
- YELLOW
- LENGTH METRIC:
- 46 MM
- RIDING STYLE:
- OFF-ROAD
$5.32 -
Hiflofiltro Oil Filter for KTM 250 EXC Racing 2003-2006 HF157
HIFLOFILTRO
$5.82Experience superior engine protection with the HIFLOFILTRO Oil Filter HF157. Designed for high performance and reliability, this premium oil filter ensures optimal oil flow and filtration efficiency, prolonging the life of your engine. Trust in a product...HF157- SKU:
- HF157
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- OFF-ROAD
- WIDTH METRIC:
- 41 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- TYPE:
- CARTRIDGE
- UNITS:
- EACH
- BASE COLOR:
- YELLOW
- STYLE:
- PREMIUM
- LENGTH METRIC:
- 52 MM
- PRODUCT NAME:
- OIL FILTER
$5.82 -
Hiflofiltro Oil Filter for Yamaha SR400 2015-2018 HF145
HIFLOFILTRO
$5.18Experience superior engine protection with the HIFLOFILTRO Oil Filter HF145. Designed for high performance and reliability, this premium oil filter ensures optimal filtration and enhances the longevity of your engine. Upgrade your maintenance routine...HF145- SKU:
- HF145
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE COLOR:
- RED
- STYLE:
- PREMIUM
- WIDTH METRIC:
- 55 MM
- PRODUCT NAME:
- OIL FILTER
- LENGTH METRIC:
- 58 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
$5.18 -
HifloFiltro Oil Filter for Yamaha Majesty 400 2004-2014 HF132
HIFLOFILTRO
$3.97Experience superior engine protection with the HIFLOFILTRO Oil Filter HF132, designed to meet or exceed OEM specifications. This premium oil filter ensures optimal performance by effectively trapping contaminants and maintaining oil flow, extending the...HF132- SKU:
- HF132
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BASE COLOR:
- RED
- LENGTH METRIC:
- 55 MM
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- STYLE:
- PREMIUM
- WIDTH METRIC:
- 44 MM
- PRODUCT NAME:
- OIL FILTER
$3.97 -
Hiflofiltro Oil Filter for KTM 690 Duke 2008-2019 HF155
HIFLOFILTRO
$5.82Experience superior engine protection with the HIFLOFILTRO HF155 Oil Filter. Designed to meet or exceed OEM specifications, this premium filter ensures optimal oil flow and filtration, enhancing your engine's performance and longevity. Trust in...HF155- SKU:
- HF155
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- LENGTH METRIC:
- 69 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- CARTRIDGE
- COLOR/FINISH:
- ORANGE
- WIDTH METRIC:
- 41 MM
- BASE COLOR:
- ORANGE
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PREMIUM
- UNITS:
- EACH
$5.82 -
Hiflofiltro Oil Filter for Honda CB1000 1994-1995 HF303
HIFLOFILTRO
$8.71Experience superior engine protection with the HIFLOFILTRO Oil Filter HF303, designed for high-performance vehicles. This premium oil filter ensures optimal filtration, extending the life of your engine and enhancing overall performance. Trust in a brand...HF303- SKU:
- HF303
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BASE COLOR:
- BLACK
- LENGTH METRIC:
- 73 MM
- STYLE:
- PREMIUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- WIDTH METRIC:
- 65 MM
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- BLACK
$8.71 -
VERTEX Piston Kit 24220B
VERTEX
$269.95All pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity cast aluminum alloy (not...09105190- SKU:
- 09105190
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.7:1
- DISPLACEMENT:
- 250 CC
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 76.96 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- ENGINE TYPE:
- 4-STROKE
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
$269.95 -
VERTEX Piston Kit 24101A
VERTEX
$223.95All pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity cast aluminum alloy (not...09104070- SKU:
- 09104070
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- STYLE:
- CAST REPLICA
- DISPLACEMENT:
- 150 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- CYLINDER DIAMETER METRIC:
- 58 MM
- PISTON DIAMETER METRIC:
- 57.94 MM
- COMPRESSION RATIO IMPERIAL:
- STANDARD
- PISTON MATERIAL:
- CAST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$223.95 -
VERTEX Piston Kit 24097A
VERTEX
$302.95All pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09104076- SKU:
- 09104076
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$302.95 -
VERTEX Piston Kit 24122B
VERTEX
$256.95All pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09104087- SKU:
- 09104087
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
$256.95 -
VERTEX Piston Kit - High Compression 24120C
VERTEX
$138.95All pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09104099- SKU:
- 09104099
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COMPRESSION RATIO IMPERIAL:
- 14.3:1
- DISPLACEMENT:
- 250 CC
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- CYLINDER DIAMETER METRIC:
- 76.80 MM
- RIDING STYLE:
- OFF-ROAD
- PISTON DIAMETER METRIC:
- 76.78 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
$138.95 -
VERTEX Piston Kit 24099A
VERTEX
$302.95All pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09104107- SKU:
- 09104107
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- COMPRESSION RATIO IMPERIAL:
- 12.6:1
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 94.95 MM
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- DISPLACEMENT:
- 450 CC
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- STREET
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
$302.95 -
VERTEX Piston Kit 24099B
VERTEX
$302.95All pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09104108- SKU:
- 09104108
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- PISTON DIAMETER METRIC:
- 94.96 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- DISPLACEMENT:
- 450 CC
- COMPRESSION RATIO IMPERIAL:
- 12.6:1
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
$302.95Qty in Cart: 0Quantity:Price:$302.95Subtotal: -
VERTEX Piston Kit 24098A
VERTEX
$293.95All pistons are heat-treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life09104110- SKU:
- 09104110
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
$293.95
