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Dirt Bike Engine

Dirt Bike Engine

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
  • Rekluse Clutch Cover KTM 65 SX 2024 RMS-0413065

    Rekluse Clutch Cover KTM 65 SX 2024 RMS-0413065

    REKLUSE

    $189.00
    REKLUSE Clutch Cover for KTM/Husqvarna RMS-395 Experience superior performance and durability with the REKLUSE Clutch Cover, meticulously crafted for KTM and Husqvarna motorcycles. Designed for adventurers who demand the best, this cover stands resilient...
    09401821
    SKU:
    09401821
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    COVER
    TYPE:
    CLUTCH
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    RIDING STYLE:
    STREET
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Honda CRF450R 2017-2025 RMS-409

    Rekluse Clutch Cover Honda CRF450R 2017-2025 RMS-409

    REKLUSE

    $189.00
    REKLUSE Clutch Cover CRF450R/X RMS-409 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for the CRF450R/X. This premium component combines exceptional durability and performance, ensuring you're ready for any challenge...
    09401824
    SKU:
    09401824
    Availability:
    Ships Same Business Day
    Weight:
    1.05 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover for 2009-2016 Honda CRF450R RMS-414

    Rekluse Clutch Cover for 2009-2016 Honda CRF450R RMS-414

    REKLUSE

    $189.00
    REKLUSE Clutch Cover CRF450R RMS-414 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for the CRF450R. This premium component combines cutting-edge design with robust materials, ensuring exceptional performance and...
    09401825
    SKU:
    09401825
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    UNITS:
    EACH
    PRODUCT NAME:
    COVER
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover for Honda CRF250R 2010-2017 RMS-416

    Rekluse Clutch Cover for Honda CRF250R 2010-2017 RMS-416

    REKLUSE

    $189.00
    REKLUSE Clutch Cover CRF250R RMS-416 Engineered for the ultimate performance, the REKLUSE Clutch Cover for the CRF250R combines exceptional durability with sleek aesthetics. Designed to withstand the rigors of off-road riding, this cover ensures your...
    09401827
    SKU:
    09401827
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    TYPE:
    CLUTCH
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Kawasaki KX250F 2009-2020 RMS-440

    Rekluse Clutch Cover Kawasaki KX250F 2009-2020 RMS-440

    REKLUSE

    $189.00
    REKLUSE Clutch Cover KX250F RMS-440 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for the KX250F. This premium component combines cutting-edge engineering with stylish design, ensuring your bike is ready to conquer...
    09401828
    SKU:
    09401828
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    TYPE:
    CLUTCH
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Kawasaki KX450F 2016-2018 RMS-444

    Rekluse Clutch Cover Kawasaki KX450F 2016-2018 RMS-444

    REKLUSE

    $189.00
    REKLUSE Clutch Cover KX450F RMS-444 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously designed for the KX450F. Combining cutting-edge engineering with robust materials, this clutch cover ensures exceptional performance and...
    09401829
    SKU:
    09401829
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    TYPE:
    CLUTCH
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    COVER
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • REKLUSE Clutch Cover Kawasaki KX450 2021 RMS-445

    REKLUSE Clutch Cover Kawasaki KX450 2021 RMS-445

    REKLUSE

    $189.00
    REKLUSE Clutch Cover for Kawasaki 450 RMS-445 Experience unmatched durability and performance with the REKLUSE Clutch Cover, meticulously designed for the adventurous rider. This stylish yet robust component is engineered to withstand the toughest...
    09401830
    SKU:
    09401830
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover for Suzuki RM-Z450 2008-2025 RMS-464

    Rekluse Clutch Cover for Suzuki RM-Z450 2008-2025 RMS-464

    REKLUSE

    $189.00
    REKLUSE Clutch Cover RMZ/X450 RMS-464 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for exceptional durability and performance. Designed to withstand the rigors of off-road adventures, this cover not only enhances...
    09401831
    SKU:
    09401831
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    TYPE:
    CLUTCH
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    PRODUCT NAME:
    COVER
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Suzuki RM-Z250 2007-2025 RMS-467

    Rekluse Clutch Cover Suzuki RM-Z250 2007-2025 RMS-467

    REKLUSE

    $189.00
    REKLUSE Clutch Cover RMZ250 RMS-467 Enhance your riding experience with the REKLUSE Clutch Cover RMZ250 RMS-467, crafted for exceptional strength and performance. This premium component is designed to withstand the toughest conditions, ensuring your bike...
    09401832
    SKU:
    09401832
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    UNITS:
    EACH
    PRODUCT NAME:
    COVER
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Yamaha YZ250 1999-2025 RMS-470

    Rekluse Clutch Cover Yamaha YZ250 1999-2025 RMS-470

    REKLUSE

    $189.00
    REKLUSE Clutch Cover YZ250 RMS-470 Elevate your ride with the REKLUSE Clutch Cover for YZ250, expertly crafted to deliver exceptional performance and unmatched durability. Designed for the adventurer in mind, this cover withstands the toughest terrains...
    09401833
    SKU:
    09401833
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover GasGas EC 450F 2012-2015 Yamaha WR450F 2003-2015 YFZ450R 2009-2020 YZ450F 2005-2009 RMS-473

    Rekluse Clutch Cover GasGas EC 450F 2012-2015 Yamaha WR450F 2003-2015 YFZ450R 2009-2020 YZ450F 2005-2009 RMS-473

    REKLUSE

    $189.00
    REKLUSE Clutch Cover for Gas Gas/Yamaha RMS-473 Experience the perfect blend of durability and performance with the REKLUSE Clutch Cover, designed specifically for Gas Gas and Yamaha motorcycles. This high-quality component is built to withstand the...
    09401835
    SKU:
    09401835
    Availability:
    Ships Same Business Day
    Weight:
    1.05 LBS
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Yamaha YZ450F 2010-2021 WR450F 2016-2021 YZ450FX 2016-2021 RMS-476

    Rekluse Clutch Cover Yamaha YZ450F 2010-2021 WR450F 2016-2021 YZ450FX 2016-2021 RMS-476

    REKLUSE

    $189.00
    REKLUSE Clutch Cover YZ/WR450 RMS-476 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for the YZ/WR450. This premium cover combines cutting-edge engineering with robust materials to ensure peak performance and...
    09401836
    SKU:
    09401836
    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
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover for Yamaha YZ250F 2015-2019 WR250F 2015-2019 RMS-478

    Rekluse Clutch Cover for Yamaha YZ250F 2015-2019 WR250F 2015-2019 RMS-478

    REKLUSE

    $189.00
    REKLUSE Clutch Cover YZ/WR250 RMS-478 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for the YZ/WR250. This robust cover not only enhances the aesthetic appeal of your bike but also offers superior protection against...
    09401837
    SKU:
    09401837
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    TYPE:
    CLUTCH
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Sherco 450 SEF-R 2015-2021 RMS-0408004

    Rekluse Clutch Cover Sherco 450 SEF-R 2015-2021 RMS-0408004

    REKLUSE

    $189.00
    REKLUSE Clutch Cover for Sherco 450 RMS-0408004 Engineered for extreme durability and high performance, the REKLUSE Clutch Cover is the ultimate upgrade for your Sherco 450. Designed to withstand the toughest terrains, this cover combines style with...
    09401997
    SKU:
    09401997
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Kawasaki KX250 2021-2024 RMS-0404140

    Rekluse Clutch Cover Kawasaki KX250 2021-2024 RMS-0404140

    REKLUSE

    $189.00
    REKLUSE Clutch Cover KX250 RMS-0404140 Elevate your ride with the REKLUSE Clutch Cover designed specifically for the KX250. Crafted for exceptional durability and performance, this cover is your ultimate companion for tackling challenging terrains. With...
    09401998
    SKU:
    09401998
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    MATERIAL:
    BILLET ALUMINUM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    UNITS:
    EACH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • Rekluse Clutch Cover Kawasaki KX450F 2021-2023 RMS-0404047

    Rekluse Clutch Cover Kawasaki KX450F 2021-2023 RMS-0404047

    REKLUSE

    $189.00
    REKLUSE Clutch Cover KX450F RMS-0404047 Elevate your riding experience with the REKLUSE Clutch Cover, meticulously crafted for the KX450F. Engineered for exceptional strength and performance, this cover ensures that you can tackle any terrain with...
    09401999
    SKU:
    09401999
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CLUTCH
    PRODUCT NAME:
    COVER
    COLOR/FINISH:
    ANODIZED
    MATERIAL:
    BILLET ALUMINUM
    UNITS:
    EACH
    $189.00
    Qty in Cart: 0
    Quantity:
    Price:
    $189.00
    Subtotal:
  • VERTEX Piston Kit - High Compression 24112B

    VERTEX Piston Kit - High Compression 24112B

    VERTEX

    $303.95
    VERTEX Piston Kit High Compression 24112BAll 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
    09104114
    SKU:
    09104114
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    DISPLACEMENT:
    450 CC
    RIDING STYLE:
    STREET
    PISTON DIAMETER METRIC:
    94.96 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    COMPRESSION RATIO IMPERIAL:
    13.6:1
    CYLINDER DIAMETER METRIC:
    95.00 MM
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    ENGINE TYPE:
    4-STROKE
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    $303.95
    Qty in Cart: 0
    Quantity:
    Price:
    $303.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24116A

    VERTEX Piston Kit - High Compression 24116A

    VERTEX

    $296.95
    VERTEX Piston Kit High Compression 24116AAll 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
    09104117
    SKU:
    09104117
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    RIDING STYLE:
    STREET
    COMPRESSION RATIO IMPERIAL:
    15.1:1
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    CYLINDER DIAMETER METRIC:
    88.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    87.96 MM
    PRODUCT NAME:
    PISTON KIT
    DISPLACEMENT:
    350 CC
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    Qty in Cart: 0
    Quantity:
    Price:
    $296.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24116B

    VERTEX Piston Kit - High Compression 24116B

    VERTEX

    $296.95
    VERTEX Piston Kit High Compression 24116BAll 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
    09104118
    SKU:
    09104118
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    CYLINDER DIAMETER METRIC:
    88.00 MM
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    87.97 MM
    RIDING STYLE:
    STREET
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    COMPRESSION RATIO IMPERIAL:
    15.1:1
    DISPLACEMENT:
    350 CC
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    $296.95
    Qty in Cart: 0
    Quantity:
    Price:
    $296.95
    Subtotal:
  • VERTEX Piston Kit - High Compression 24113A

    VERTEX Piston Kit - High Compression 24113A

    VERTEX

    $340.95
    VERTEX Piston Kit High Compression 24113AAll 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
    09104119
    SKU:
    09104119
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    RIDING STYLE:
    OFF-ROAD
    STYLE:
    FORGED HIGH COMPRESSION
    UNITS:
    KIT
    DISPLACEMENT:
    450 CC
    COMPRESSION RATIO IMPERIAL:
    13.3:1
    ENGINE TYPE:
    4-STROKE
    PISTON DIAMETER METRIC:
    94.95 MM
    RIDING STYLE:
    STREET
    SKIRT COATING:
    MOLYBDENUM DISULPHITE
    CYLINDER DIAMETER METRIC:
    95.00 MM
    PISTON MATERIAL:
    FORGED 2618 ALUMINUM
    PRODUCT NAME:
    PISTON KIT
    $340.95
    Qty in Cart: 0
    Quantity:
    Price:
    $340.95
    Subtotal:
  • Total: items /

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Dirt Bike Engine Parts

Keep your dirt bike running smoothly and prolong the life of its engine with essential general maintenance. But when parts start to break down, don't let it stop you from getting out on the trails! JJ Motorsports has all that you need for minor jobs like oil changes or major overhauls such as a complete rebuild - carrying top aftermarket brands . Get back in gear faster by shopping our full line of high-quality dirt bike engine parts here today at JJ Motorsports!

 

At JJ Motorsports, we want to make sure you don't miss out on the ride! If your motor has blown or radiator smashed, our gearheads can help get you back in the seat. We carry piston kits from top brands like Wiseco and Wrench Rabbit engine kits so that riders have access to a wide range of parts for their dirt bike engine rebuilds. Plus – with gaskets at-the-ready when it comes time for any leakages - no need to worry about maintenance issues either; simply stay up on oil & filter changes and let us take care of everything else. Got queries? Just give one of our knowledgeable staff members a call at 1-231‐767‐5055 where they'll be more than happy provide advice, instructions and tailored answers catered just for YOU!