Select Your Ride

1
2
3

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
  • MOOSE RACING Top End Gasket Kit - CR125R 810231

    MOOSE RACING Top End Gasket Kit - CR125R 810231

    MOOSE RACING

    $34.00
    MOOSE RACING Top End Gasket Kit CR125R 810231Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810231
    SKU:
    M810231
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $34.00
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CR125R 810232

    MOOSE RACING Top End Gasket Kit - CR125R 810232

    MOOSE RACING

    $20.12
    MOOSE RACING Top End Gasket Kit CR125R 810232Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810232
    SKU:
    M810232
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    TYPE:
    TOP END
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $20.12
    Qty in Cart: 0
    Quantity:
    Price:
    $20.12
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CR125R 810233

    MOOSE RACING Top End Gasket Kit - CR125R 810233

    MOOSE RACING

    $36.52
    MOOSE RACING Top End Gasket Kit CR125R 810233Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810233
    SKU:
    M810233
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    TYPE:
    TOP END
    $36.52
    Qty in Cart: 0
    Quantity:
    Price:
    $36.52
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CR125 810235

    MOOSE RACING Top End Gasket Kit - CR125 810235

    MOOSE RACING

    $32.14
    MOOSE RACING Top End Gasket Kit CR125 810235Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810235
    SKU:
    M810235
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    $32.14
    Qty in Cart: 0
    Quantity:
    Price:
    $32.14
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CR250 810251

    MOOSE RACING Top End Gasket Kit - CR250 810251

    MOOSE RACING

    $15.08
    MOOSE RACING Top End Gasket Kit CR250 810251Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810251
    SKU:
    M810251
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $15.08
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CR250R 810252

    MOOSE RACING Top End Gasket Kit - CR250R 810252

    MOOSE RACING

    $18.86
    MOOSE RACING Top End Gasket Kit CR250R 810252Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810252
    SKU:
    M810252
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    UNITS:
    KIT
    $18.86
    Qty in Cart: 0
    Quantity:
    Price:
    $18.86
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - CR250R 810253

    MOOSE RACING Top End Gasket Kit - CR250R 810253

    MOOSE RACING

    $20.12
    MOOSE RACING Top End Gasket Kit CR250R 810253Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as...
    M810253
    SKU:
    M810253
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    $20.12
    Qty in Cart: 0
    Quantity:
    Price:
    $20.12
    Subtotal:
  • LA SLEEVE Cylinder Sleeve FL5064

    LA SLEEVE Cylinder Sleeve FL5064

    LA SLEEVE

    $164.95
    LA SLEEVE Cylinder Sleeve FL5064Quality replacement cylinder sleeves give old cylinders new life
    FL5064
    SKU:
    FL5064
    Availability:
    Ships Same Business Day
    Weight:
    2.19 LBS
    BORE SIZE METRIC:
    67.00 MM
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    CYLINDER SLEEVE
    TYPE:
    CS
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    Qty in Cart: 0
    Quantity:
    Price:
    $164.95
    Subtotal:
  • LA SLEEVE Cylinder Sleeve FL5093

    LA SLEEVE Cylinder Sleeve FL5093

    LA SLEEVE

    $174.95
    LA SLEEVE Cylinder Sleeve FL5093Quality replacement cylinder sleeves give old cylinders new life
    FL5093
    SKU:
    FL5093
    Availability:
    Ships Same Business Day
    Weight:
    1.31 LBS
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    BORE SIZE METRIC:
    67.00 MM
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    TYPE:
    AC
    PRODUCT NAME:
    CYLINDER SLEEVE
    RIDING STYLE:
    OFF-ROAD
    $174.95
    Qty in Cart: 0
    Quantity:
    Price:
    $174.95
    Subtotal:
  • LA SLEEVE Cylinder Sleeve FL5140

    LA SLEEVE Cylinder Sleeve FL5140

    LA SLEEVE

    $132.95
    LA SLEEVE Cylinder Sleeve FL5140Quality replacement cylinder sleeves give old cylinders new life
    FL5140
    SKU:
    FL5140
    Availability:
    Ships Same Business Day
    Weight:
    0.88 LBS
    BORE SIZE METRIC:
    47.50 MM
    PRODUCT NAME:
    CYLINDER SLEEVE
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CS
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    $132.95
    Qty in Cart: 0
    Quantity:
    Price:
    $132.95
    Subtotal:
  • LA SLEEVE Cylinder Sleeve FL5181

    LA SLEEVE Cylinder Sleeve FL5181

    LA SLEEVE

    $145.95
    LA SLEEVE Cylinder Sleeve FL5181Quality replacement cylinder sleeves give old cylinders new life
    FL5181
    SKU:
    FL5181
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    BORE SIZE METRIC:
    54.00 MM
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    TYPE:
    AC
    PRODUCT NAME:
    CYLINDER SLEEVE
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    $145.95
    Qty in Cart: 0
    Quantity:
    Price:
    $145.95
    Subtotal:
  • LA SLEEVE Cylinder Sleeve FL5182

    LA SLEEVE Cylinder Sleeve FL5182

    LA SLEEVE

    $174.95
    LA SLEEVE Cylinder Sleeve FL5182Quality replacement cylinder sleeves give old cylinders new life
    FL5182
    SKU:
    FL5182
    Availability:
    Ships Same Business Day
    Weight:
    1.25 LBS
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    TYPE:
    AC
    BORE SIZE METRIC:
    67.00 MM
    PRODUCT NAME:
    CYLINDER SLEEVE
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $174.95
    Subtotal:
  • LA SLEEVE Sleeve and Piston Kit - Kawasaki LAS5778K

    LA SLEEVE Sleeve and Piston Kit - Kawasaki LAS5778K

    LA SLEEVE

    $322.95
    LA SLEEVE Sleeve and Piston Kit Kawasaki LAS5778KOne boxed component kit provides the foremost compatible top-end rebuild solution, The Moly2000 centrifugally spun-cast cylinder sleeved iron bore provides better ring seal for better compression, more...
    09310861
    SKU:
    09310861
    Availability:
    Ships Same Business Day
    Weight:
    1.65 LBS
    PRODUCT NAME:
    SLEEVE AND PISTON KIT
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $322.95
    Qty in Cart: 0
    Quantity:
    Price:
    $322.95
    Subtotal:
  • On Sale
    LA SLEEVE Cylinder Sleeve FL5769

    LA SLEEVE Cylinder Sleeve FL5769

    LA SLEEVE

    MSRP: $129.95
    Now: $83.00
    Was: $129.95
    LA SLEEVE Cylinder Sleeve FL5769Quality replacement cylinder sleeves give old cylinders new life
    09310863
    SKU:
    09310863
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    BORE SIZE METRIC:
    93.00 MM
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    CYLINDER SLEEVE
    RIDING STYLE:
    UTV
    UNITS:
    KIT
    TYPE:
    AC
    MSRP: $129.95
    Now: $83.00
    Was: $129.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $129.95
    Now: $83.00
    Was: $129.95
    Subtotal:
  • LA SLEEVE Cylinder Sleeve YA5536 LA SLEEVE Cylinder Sleeve YA5536

    LA SLEEVE Cylinder Sleeve YA5536

    LA SLEEVE

    $109.95
    LA SLEEVE Cylinder Sleeve YA5536Quality replacement cylinder sleeves give old cylinders new life
    09310265
    SKU:
    09310265
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    BORE SIZE METRIC:
    77.00 MM
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    TYPE:
    AC
    COLOR/FINISH:
    CHROME
    ENGINE TYPE:
    4-STROKE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    PRODUCT NAME:
    CYLINDER SLEEVE
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • LA SLEEVE Sleeve and Piston Kit - Honda LAS-5599K

    LA SLEEVE Sleeve and Piston Kit - Honda LAS-5599K

    LA SLEEVE

    $291.95
    LA SLEEVE Sleeve and Piston Kit Honda LAS-5599KThe foremost compatible top-end rebuild kit all in one box, Feature a Moly2000 centrifugally-spun, cast cylinder sleeved iron bore to provide better ring seal for better compression, more torque and more...
    09310382
    SKU:
    09310382
    Availability:
    Ships Same Business Day
    Weight:
    1.60 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CYLINDER
    UNITS:
    KIT
    MATERIAL:
    IRON
    PRODUCT NAME:
    REBUILD KIT
    MATERIAL:
    CAST
    $291.95
    Qty in Cart: 0
    Quantity:
    Price:
    $291.95
    Subtotal:
  • KB PERFORMANCE PISTON KIT M8 117" +030 KB542LCA.030

    KB PERFORMANCE PISTON KIT M8 117" +030 KB542LCA.030

    KB PERFORMANCE

    $444.95
    KB PERFORMANCE PISTON KIT M8 117" +030 KB542LCA.030Super Duty Series includes:, Anodized top ring groove and crown, Line2Line abradable skirt coating applied to .003" total thickness for a zero initial fit to allow coating to hone in for a tight quiet...
    09105727
    SKU:
    09105727
    Availability:
    Ships Same Business Day
    Weight:
    3.00 LBS
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    DISPLACEMENT:
    117'
    RIDING STYLE:
    STREET
    BORE SIZE METRIC:
    104.77 MM
    PISTON MATERIAL:
    ALUMINUM
    STROKE LENGTH IMPERIAL:
    4-1/2'
    UNITS:
    KIT
    PRODUCT NAME:
    PISTON KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $444.95
    Subtotal:
  • On Sale
    K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CR250R 75-1006

    K&S TECHNOLOGIES Water Pump Repair Gasket Kit - CR250R 75-1006

    K&S TECHNOLOGIES

    MSRP: $32.95
    Now: $21.00
    Was: $32.95
    K&S TECHNOLOGIES Water Pump Repair Gasket Kit CR250R 75-1006Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model
    09341914
    SKU:
    09341914
    Availability:
    Ships Same Business Day
    Weight:
    0.22 LBS
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP REPAIR
    UNITS:
    KIT
    MSRP: $32.95
    Now: $21.00
    Was: $32.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $32.95
    Now: $21.00
    Was: $32.95
    Subtotal:
  • On Sale
    K&S TECHNOLOGIES Water Pump Repair Gasket - KX250F 75-2001

    K&S TECHNOLOGIES Water Pump Repair Gasket - KX250F 75-2001

    K&S TECHNOLOGIES

    MSRP: $52.95
    Now: $34.00
    Was: $52.95
    K&S TECHNOLOGIES Water Pump Repair Gasket KX250F 75-2001Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model
    09341915
    SKU:
    09341915
    Availability:
    Ships Same Business Day
    Weight:
    0.22 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP REPAIR
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    MSRP: $52.95
    Now: $34.00
    Was: $52.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $52.95
    Now: $34.00
    Was: $52.95
    Subtotal:
  • K&S TECHNOLOGIES Water Pump Repair Kit - CR85R 75-1008

    K&S TECHNOLOGIES Water Pump Repair Kit - CR85R 75-1008

    K&S TECHNOLOGIES

    $30.95
    K&S TECHNOLOGIES Water Pump Repair Kit CR85R 75-1008Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model
    09342879
    SKU:
    09342879
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    WATER PUMP REPAIR
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • Total: items /

Adding your products to cart

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!