Dirt Bike Engine

Dirt Bike Engine

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!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • KB PERFORMANCE Piston Kit - FX/FL KB263.060

    KB PERFORMANCE Piston Kit - FX/FL KB263.060

    KB PERFORMANCE

    $249.95
    KB PERFORMANCE Piston Kit FX/FL KB263.060Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and...
    DS751208
    SKU:
    DS751208
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    +0.060'
    BORE SIZE IMPERIAL:
    3.437'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    RIDING STYLE:
    STREET
    Qty in Cart: 0
    Quantity:
    Price:
    $249.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB292.010

    KB PERFORMANCE Piston Kit - XL KB292.010

    KB PERFORMANCE

    $279.95
    KB PERFORMANCE Piston Kit XL KB292.010Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751218
    SKU:
    DS751218
    Availability:
    Ships Same Business Day
    Weight:
    2.50 LBS
    BORE SIZE IMPERIAL:
    3.1875'
    COMPRESSION RATIO IMPERIAL:
    8.2:1
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB292.020

    KB PERFORMANCE Piston Kit - XL KB292.020

    KB PERFORMANCE

    $279.95
    KB PERFORMANCE Piston Kit XL KB292.020Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751219
    SKU:
    DS751219
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    8.2:1
    BORE SIZE IMPERIAL:
    3.208'
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    RIDING STYLE:
    STREET
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB292.030

    KB PERFORMANCE Piston Kit - XL KB292.030

    KB PERFORMANCE

    $279.95
    KB PERFORMANCE Piston Kit XL KB292.030Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751220
    SKU:
    DS751220
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    +0.030'
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE SIZE IMPERIAL:
    3.1875'
    COMPRESSION RATIO IMPERIAL:
    8.2:1
    $279.95
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB295.STD

    KB PERFORMANCE Piston Kit - XL KB295.STD

    KB PERFORMANCE

    $235.95
    KB PERFORMANCE Piston Kit XL KB295.STDManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751235
    SKU:
    DS751235
    Availability:
    Ships Same Business Day
    Weight:
    2.65 LBS
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.498'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    PISTON HEAD SHAPE:
    FLAT TOP
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    $235.95
    Qty in Cart: 0
    Quantity:
    Price:
    $235.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB295.005

    KB PERFORMANCE Piston Kit - XL KB295.005

    KB PERFORMANCE

    $235.95
    KB PERFORMANCE Piston Kit XL KB295.005Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751236
    SKU:
    DS751236
    Availability:
    Ships Same Business Day
    Weight:
    2.65 LBS
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    PISTON HEAD SHAPE:
    FLAT TOP
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    +0.005'
    BORE SIZE IMPERIAL:
    3.498'
    $235.95
    Qty in Cart: 0
    Quantity:
    Price:
    $235.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB295.010

    KB PERFORMANCE Piston Kit - XL KB295.010

    KB PERFORMANCE

    $235.95
    KB PERFORMANCE Piston Kit XL KB295.010Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751237
    SKU:
    DS751237
    Availability:
    Ships Same Business Day
    Weight:
    2.65 LBS
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE SIZE IMPERIAL:
    3.498'
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    PISTON HEAD SHAPE:
    FLAT TOP
    UNITS:
    KIT
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    $235.95
    Qty in Cart: 0
    Quantity:
    Price:
    $235.95
    Subtotal:
  • KB PERFORMANCE Piston Kit - XL KB295.020

    KB PERFORMANCE Piston Kit - XL KB295.020

    KB PERFORMANCE

    $235.95
    KB PERFORMANCE Piston Kit XL KB295.020Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751238
    SKU:
    DS751238
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.498'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    PISTON HEAD SHAPE:
    FLAT TOP
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    $235.95
    Qty in Cart: 0
    Quantity:
    Price:
    $235.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB258.005

    KB PERFORMANCE Piston Kit KB258.005

    KB PERFORMANCE

    $242.95
    KB PERFORMANCE Piston Kit KB258.005Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751242
    SKU:
    DS751242
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE OVERSIZE - IMPERIAL:
    +0.005'
    BORE SIZE IMPERIAL:
    3.498'
    COMPRESSION RATIO IMPERIAL:
    8.6:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    $242.95
    Qty in Cart: 0
    Quantity:
    Price:
    $242.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB258.010

    KB PERFORMANCE Piston Kit KB258.010

    KB PERFORMANCE

    $242.95
    KB PERFORMANCE Piston Kit KB258.010Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751243
    SKU:
    DS751243
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    8.6:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.498'
    $242.95
    Qty in Cart: 0
    Quantity:
    Price:
    $242.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB258.020

    KB PERFORMANCE Piston Kit KB258.020

    KB PERFORMANCE

    $242.95
    KB PERFORMANCE Piston Kit KB258.020Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751244
    SKU:
    DS751244
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    COMPRESSION RATIO IMPERIAL:
    8.6:1
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.498'
    $242.95
    Qty in Cart: 0
    Quantity:
    Price:
    $242.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB266.000.3

    KB PERFORMANCE Piston Kit KB266.000.3

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB266.000.3Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751247
    SKU:
    DS751247
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    UNITS:
    KIT
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE SIZE IMPERIAL:
    3.498'
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB266.005.3

    KB PERFORMANCE Piston Kit KB266.005.3

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB266.005.3Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751248
    SKU:
    DS751248
    Availability:
    Ships Same Business Day
    Weight:
    2.80 LBS
    BORE SIZE IMPERIAL:
    3.498'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    BORE OVERSIZE - IMPERIAL:
    +0.005'
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    PISTON KIT
    UNITS:
    KIT
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB266.010.3

    KB PERFORMANCE Piston Kit KB266.010.3

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB266.010.3Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751249
    SKU:
    DS751249
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.498'
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB266.020.3

    KB PERFORMANCE Piston Kit KB266.020.3

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB266.020.3Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751250
    SKU:
    DS751250
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.498'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB266.030.3

    KB PERFORMANCE Piston Kit KB266.030.3

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB266.030.3Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less...
    DS751251
    SKU:
    DS751251
    Availability:
    Ships Same Business Day
    Weight:
    2.80 LBS
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    +0.030'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE SIZE IMPERIAL:
    3.498'
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB272.000

    KB PERFORMANCE Piston Kit KB272.000

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB272.000Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751253
    SKU:
    DS751253
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    PISTON HEAD SHAPE:
    REVERSE
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    BORE SIZE IMPERIAL:
    3.498'
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB272.010

    KB PERFORMANCE Piston Kit KB272.010

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB272.010Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751254
    SKU:
    DS751254
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE SIZE IMPERIAL:
    3.498'
    PISTON HEAD SHAPE:
    REVERSE
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    UNITS:
    KIT
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB272.020

    KB PERFORMANCE Piston Kit KB272.020

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB272.020Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy, Allows a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751255
    SKU:
    DS751255
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE SIZE IMPERIAL:
    3.498'
    UNITS:
    KIT
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    PISTON HEAD SHAPE:
    REVERSE
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    Subtotal:
  • KB PERFORMANCE Piston Kit KB297.000

    KB PERFORMANCE Piston Kit KB297.000

    KB PERFORMANCE

    $255.95
    KB PERFORMANCE Piston Kit KB297.000Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy, Allow a tighter fit and longer piston and ring life, Diamond-machined pistons are held to plus or minus one gram weight and less than...
    DS751258
    SKU:
    DS751258
    Availability:
    Ships Same Business Day
    Weight:
    2.75 LBS
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    8.3:1
    PISTON MATERIAL:
    HYPEREUTECTIC ALLOY
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.498'
    $255.95
    Qty in Cart: 0
    Quantity:
    Price:
    $255.95
    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!