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Dirt Bike Engine

Dirt Bike Engine

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
  • HOT RODS Crankshaft Kit CBK0049

    HOT RODS Crankshaft Kit CBK0049

    HOT RODS

    $343.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210297
    SKU:
    09210297
    Availability:
    Ships Same Business Day
    Weight:
    6.35 LBS
    UNITS:
    KIT
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    $343.95
    Qty in Cart: 0
    Quantity:
    Price:
    $343.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0050

    HOT RODS Crankshaft Kit CBK0050

    HOT RODS

    $343.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210298
    SKU:
    09210298
    Availability:
    Ships Same Business Day
    Weight:
    6.65 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    $343.95
    Qty in Cart: 0
    Quantity:
    Price:
    $343.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0052

    HOT RODS Crankshaft Kit CBK0052

    HOT RODS

    $368.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210300
    SKU:
    09210300
    Availability:
    Ships Same Business Day
    Weight:
    6.65 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    TYPE:
    OEM
    $368.95
    Qty in Cart: 0
    Quantity:
    Price:
    $368.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0055

    HOT RODS Crankshaft Kit CBK0055

    HOT RODS

    $613.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210303
    SKU:
    09210303
    Availability:
    Ships Same Business Day
    Weight:
    12.30 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    $613.95
    Qty in Cart: 0
    Quantity:
    Price:
    $613.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0056

    HOT RODS Crankshaft Kit CBK0056

    HOT RODS

    $613.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210304
    SKU:
    09210304
    Availability:
    Ships Same Business Day
    Weight:
    12.20 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    TYPE:
    OEM
    $613.95
    Qty in Cart: 0
    Quantity:
    Price:
    $613.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0061

    HOT RODS Crankshaft Kit CBK0061

    HOT RODS

    $773.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210309
    SKU:
    09210309
    Availability:
    Ships Same Business Day
    Weight:
    10.15 LBS
    TYPE:
    OEM
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $773.95
    Qty in Cart: 0
    Quantity:
    Price:
    $773.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0063

    HOT RODS Crankshaft Kit CBK0063

    HOT RODS

    $711.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210311
    SKU:
    09210311
    Availability:
    Ships Same Business Day
    Weight:
    9.80 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $711.95
    Qty in Cart: 0
    Quantity:
    Price:
    $711.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0071

    HOT RODS Crankshaft Kit CBK0071

    HOT RODS

    $858.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210319
    SKU:
    09210319
    Availability:
    Ships Same Business Day
    Weight:
    10.41 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    $858.95
    Qty in Cart: 0
    Quantity:
    Price:
    $858.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0072

    HOT RODS Crankshaft Kit CBK0072

    HOT RODS

    $551.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210320
    SKU:
    09210320
    Availability:
    Ships Same Business Day
    Weight:
    15.30 LBS
    TYPE:
    OEM
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $551.95
    Qty in Cart: 0
    Quantity:
    Price:
    $551.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0073

    HOT RODS Crankshaft Kit CBK0073

    HOT RODS

    $576.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210321
    SKU:
    09210321
    Availability:
    Ships Same Business Day
    Weight:
    6.20 LBS
    TYPE:
    OEM
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    $576.95
    Qty in Cart: 0
    Quantity:
    Price:
    $576.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0074

    HOT RODS Crankshaft Kit CBK0074

    HOT RODS

    $576.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210322
    SKU:
    09210322
    Availability:
    Ships Same Business Day
    Weight:
    9.45 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    $576.95
    Qty in Cart: 0
    Quantity:
    Price:
    $576.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0077

    HOT RODS Crankshaft Kit CBK0077

    HOT RODS

    $465.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210325
    SKU:
    09210325
    Availability:
    Ships Same Business Day
    Weight:
    8.50 LBS
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    CRANKSHAFT KIT
    UNITS:
    KIT
    $465.95
    Qty in Cart: 0
    Quantity:
    Price:
    $465.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0078

    HOT RODS Crankshaft Kit CBK0078

    HOT RODS

    $551.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210326
    SKU:
    09210326
    Availability:
    Ships Same Business Day
    Weight:
    12.45 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $551.95
    Qty in Cart: 0
    Quantity:
    Price:
    $551.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0079

    HOT RODS Crankshaft Kit CBK0079

    HOT RODS

    $551.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210327
    SKU:
    09210327
    Availability:
    Ships Same Business Day
    Weight:
    12.30 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    $551.95
    Qty in Cart: 0
    Quantity:
    Price:
    $551.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0135

    HOT RODS Crankshaft Kit CBK0135

    HOT RODS

    $551.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210367
    SKU:
    09210367
    Availability:
    Ships Same Business Day
    Weight:
    11.90 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    OEM
    UNITS:
    KIT
    $551.95
    Qty in Cart: 0
    Quantity:
    Price:
    $551.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0138

    HOT RODS Crankshaft Kit CBK0138

    HOT RODS

    $711.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210368
    SKU:
    09210368
    Availability:
    Ships Same Business Day
    Weight:
    13.20 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STROKER
    UNITS:
    KIT
    $711.95
    Qty in Cart: 0
    Quantity:
    Price:
    $711.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0139

    HOT RODS Crankshaft Kit CBK0139

    HOT RODS

    $711.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210369
    SKU:
    09210369
    Availability:
    Ships Same Business Day
    Weight:
    10.85 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STROKER
    UNITS:
    KIT
    $711.95
    Qty in Cart: 0
    Quantity:
    Price:
    $711.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0141

    HOT RODS Crankshaft Kit CBK0141

    HOT RODS

    $809.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210370
    SKU:
    09210370
    Availability:
    Ships Same Business Day
    Weight:
    12.75 LBS
    PRODUCT NAME:
    CRANKSHAFT KIT
    TYPE:
    OEM
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $809.95
    Qty in Cart: 0
    Quantity:
    Price:
    $809.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0159

    HOT RODS Crankshaft Kit CBK0159

    HOT RODS

    $703.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210381
    SKU:
    09210381
    Availability:
    Ships Same Business Day
    Weight:
    13.15 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STROKER
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    $703.95
    Qty in Cart: 0
    Quantity:
    Price:
    $703.95
    Subtotal:
  • HOT RODS Crankshaft Kit CBK0165

    HOT RODS Crankshaft Kit CBK0165

    HOT RODS

    $907.95
    Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods...
    09210386
    SKU:
    09210386
    Availability:
    Ships Same Business Day
    Weight:
    13.35 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STROKER
    UNITS:
    KIT
    PRODUCT NAME:
    CRANKSHAFT KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    $907.95
    Qty in Cart: 0
    Quantity:
    Price:
    $907.95
    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!

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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