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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.

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  • KIBBLEWHITE Valve Conversion Kit 80-82350

    KIBBLEWHITE Valve Conversion Kit 80-82350

    KIBBLEWHITE

    MSRP: $172.95
    $172.15
    KIBBLEWHITE Valve Conversion Kit 80-82350Stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves, Extends the life of the valvetrain and intake components by as much as...
    09263177
    SKU:
    09263177
    Availability:
    Ships Same Business Day
    Weight:
    0.45 LBS
    SPRING LIFT:
    0,420'
    SPRING SEAT PRESSURE:
    69 LB
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE KIT
    RIDING STYLE:
    OFF-ROAD
    SPRING LIFT IMPERIAL:
    0.420'
    SPRING OPEN PRESSURE:
    187 LB
    TYPE:
    CONVERSION
    UNITS:
    KIT
    MSRP: $172.95
    $172.15
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $172.95
    $172.15
    Subtotal:
  • KIBBLEWHITE Intake Valve 80-82312

    KIBBLEWHITE Intake Valve 80-82312

    KIBBLEWHITE

    MSRP: $31.95
    $31.01
    KIBBLEWHITE Intake Valve 80-82312Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...
    09263178
    SKU:
    09263178
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    STEM DIAMETER IMPERIAL:
    0.1962'
    HEAD DIAMETER METRIC:
    31.00 MM
    LENGTH IMPERIAL:
    3.245'
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE
    RIDING STYLE:
    OFF-ROAD
    TULIP ANGLE:
    18°
    APPLICATION:
    INTAKE
    MODEL:
    BLACK DIAMOND™
    UNITS:
    EACH
    MSRP: $31.95
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $31.95
    $31.01
    Subtotal:
  • KIBBLEWHITE Exhaust Valve 80-82316

    KIBBLEWHITE Exhaust Valve 80-82316

    KIBBLEWHITE

    MSRP: $31.95
    $31.01
    KIBBLEWHITE Exhaust Valve 80-82316Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the...
    09263179
    SKU:
    09263179
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    APPLICATION:
    EXHAUST
    HEAD DIAMETER METRIC:
    25.00 MM
    LENGTH IMPERIAL:
    3.235'
    MODEL:
    BLACK DIAMOND™
    TULIP ANGLE:
    30°
    UNITS:
    EACH
    MATERIAL:
    STEEL
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.1760'
    MSRP: $31.95
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $31.95
    $31.01
    Subtotal:
  • KIBBLEWHITE Intake Valve - Standard - Titanium - YZ250F 80-82312T

    KIBBLEWHITE Intake Valve - Standard - Titanium - YZ250F 80-82312T

    KIBBLEWHITE

    $92.51
    KIBBLEWHITE Intake Valve Standard Titanium YZ250F 80-82312TTensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion, and...
    09263180
    SKU:
    09263180
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    TITANIUM
    MODEL:
    TENSILITE®
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.1962'
    APPLICATION:
    INTAKE
    UNITS:
    EACH
    HEAD DIAMETER METRIC:
    31.00 MM
    RIDING STYLE:
    OFF-ROAD
    TULIP ANGLE:
    18°
    $92.51
    Qty in Cart: 0
    Quantity:
    Price:
    $92.51
    Subtotal:
  • KIBBLEWHITE Exhaust Valve - Standard - Titanium - YZ250F - 2019 80-82316T

    KIBBLEWHITE Exhaust Valve - Standard - Titanium - YZ250F - 2019 80-82316T

    KIBBLEWHITE

    $92.51
    KIBBLEWHITE Exhaust Valve Standard Titanium YZ250F 2019 80-82316TTensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact,...
    09263181
    SKU:
    09263181
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    TITANIUM
    MODEL:
    TENSILITE®
    STEM DIAMETER IMPERIAL:
    0.1760'
    TULIP ANGLE:
    30°
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    VALVE
    UNITS:
    EACH
    RIDING STYLE:
    OFF-ROAD
    HEAD DIAMETER METRIC:
    25.00 MM
    $92.51
    Qty in Cart: 0
    Quantity:
    Price:
    $92.51
    Subtotal:
  • KIBBLEWHITE Intake Valve Guide 80-82320

    KIBBLEWHITE Intake Valve Guide 80-82320

    KIBBLEWHITE

    MSRP: $15.95
    $15.92
    KIBBLEWHITE Intake Valve Guide 80-82320Precision-machined from C630, Compatible with no-lead fuel and accept any type of valve-stem material, Provide maximum service with chromed valve stems, Feature a tapered nose design for maximum bearing service and...
    09263182
    SKU:
    09263182
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE COLOR:
    BROWN
    PRODUCT NAME:
    VALVE GUIDE
    APPLICATION:
    INTAKE
    UNITS:
    EACH
    COLOR/FINISH:
    BRONZE
    INSIDE DIAMETER IMPERIAL:
    0.1962'
    SIZE IMPERIAL:
    STANDARD
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.3957'
    RIDING STYLE:
    OFF-ROAD
    MSRP: $15.95
    $15.92
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.95
    $15.92
    Subtotal:
  • KIBBLEWHITE Intake Valve Guide 80-82329

    KIBBLEWHITE Intake Valve Guide 80-82329

    KIBBLEWHITE

    MSRP: $15.95
    $15.92
    KIBBLEWHITE Intake Valve Guide 80-82329Precision-machined from C630, Compatible with no-lead fuel and accept any type of valve-stem material, Provide maximum service with chromed valve stems, Feature a tapered nose design for maximum bearing service and...
    09263185
    SKU:
    09263185
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    APPLICATION:
    INTAKE
    COLOR/FINISH:
    BRONZE
    UNITS:
    EACH
    BASE COLOR:
    BROWN
    MATERIAL:
    C630 BRONZE
    PRODUCT NAME:
    VALVE GUIDE
    INSIDE DIAMETER IMPERIAL:
    0.1962'
    OUTSIDE DIAMETER IMPERIAL:
    0.4057'
    RIDING STYLE:
    OFF-ROAD
    SIZE IMPERIAL:
    OVERSIZE (+0.010')
    MSRP: $15.95
    $15.92
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.95
    $15.92
    Subtotal:
  • KIBBLEWHITE Exhaust Valve Guide 80-82330

    KIBBLEWHITE Exhaust Valve Guide 80-82330

    KIBBLEWHITE

    MSRP: $15.95
    $15.92
    KIBBLEWHITE Exhaust Valve Guide 80-82330Precision-machined from C630, Compatible with no-lead fuel and accept any type of valve-stem material, Provide maximum service with chromed valve stems, Feature a tapered nose design for maximum bearing service and...
    09263186
    SKU:
    09263186
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    COLOR/FINISH:
    BRONZE
    INSIDE DIAMETER IMPERIAL:
    0.1760'
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    BASE COLOR:
    BROWN
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.3563'
    PRODUCT NAME:
    VALVE GUIDE
    SIZE IMPERIAL:
    STANDARD
    APPLICATION:
    EXHAUST
    MSRP: $15.95
    $15.92
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $15.95
    $15.92
    Subtotal:
  • KIBBLEWHITE Exhaust Valve Guide 80-82339

    KIBBLEWHITE Exhaust Valve Guide 80-82339

    KIBBLEWHITE

    $15.92
    KIBBLEWHITE Exhaust Valve Guide 80-82339Precision-machined from C630, Compatible with no-lead fuel and accept any type of valve-stem material, Provide maximum service with chromed valve stems, Feature a tapered nose design for maximum bearing service and...
    09263189
    SKU:
    09263189
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    EXHAUST
    SIZE IMPERIAL:
    OVERSIZE (+0.010')
    INSIDE DIAMETER IMPERIAL:
    0.1760'
    OUTSIDE DIAMETER IMPERIAL:
    0.3663'
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    BRONZE
    PRODUCT NAME:
    VALVE GUIDE
    UNITS:
    EACH
    BASE COLOR:
    BROWN
    MATERIAL:
    C630 BRONZE
    $15.92
    Qty in Cart: 0
    Quantity:
    Price:
    $15.92
    Subtotal:
  • KIBBLEWHITE Valve Guide Seal Kit - 4 pack 80-82345

    KIBBLEWHITE Valve Guide Seal Kit - 4 pack 80-82345

    KIBBLEWHITE

    $13.96
    KIBBLEWHITE Valve Guide Seal Kit 4 pack 80-82345Kit includes 2 intake Viton® seals and 2 exhaust Viton® seals
    09263190
    SKU:
    09263190
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    TYPE:
    VALVE GUIDE
    MATERIAL:
    VITON
    PRODUCT NAME:
    SEAL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    4 PACK
    $13.96
    Qty in Cart: 0
    Quantity:
    Price:
    $13.96
    Subtotal:
  • KIBBLEWHITE Intake Valve 82-82255

    KIBBLEWHITE Intake Valve 82-82255

    KIBBLEWHITE

    MSRP: $37.95
    $37.55
    KIBBLEWHITE Intake Valve 82-82255Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...
    09263279
    SKU:
    09263279
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    LENGTH IMPERIAL:
    3.765'
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    34.42 MM
    MODEL:
    BLACK DIAMOND™
    RIDING STYLE:
    ATV
    STEM DIAMETER IMPERIAL:
    0.2160'
    UNITS:
    EACH
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    17°
    MSRP: $37.95
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.95
    $37.55
    Subtotal:
  • KIBBLEWHITE Intake Valve - Titanium - CRF250 - 2018-2020 30-33612T

    KIBBLEWHITE Intake Valve - Titanium - CRF250 - 2018-2020 30-33612T

    KIBBLEWHITE

    $109.33
    KIBBLEWHITE Intake Valve Titanium CRF250 2018-2020 30-33612TTensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion,...
    09263283
    SKU:
    09263283
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    HEAD DIAMETER METRIC:
    33.00 MM
    RIDING STYLE:
    OFF-ROAD
    TULIP ANGLE:
    16°
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.1961'
    APPLICATION:
    INTAKE
    MATERIAL:
    TITANIUM
    MODEL:
    TENSILITE®
    UNITS:
    EACH
    $109.33
    Qty in Cart: 0
    Quantity:
    Price:
    $109.33
    Subtotal:
  • KIBBLEWHITE Exhaust Valve - Titanium - CRF250 - 2018-2020 30-33616T

    KIBBLEWHITE Exhaust Valve - Titanium - CRF250 - 2018-2020 30-33616T

    KIBBLEWHITE

    $109.33
    KIBBLEWHITE Exhaust Valve Titanium CRF250 2018-2020 30-33616TTensilite® valves are CNC machined from one-piece forgings of 6AL4V or 6-2-4-2 titanium alloy, Finished with a CrN PVD coating that has a low coefficient of friction, and is impact, abrasion,...
    09263284
    SKU:
    09263284
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MATERIAL:
    TITANIUM
    MODEL:
    TENSILITE®
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    VALVE
    UNITS:
    EACH
    HEAD DIAMETER METRIC:
    26.00 MM
    RIDING STYLE:
    OFF-ROAD
    STEM DIAMETER IMPERIAL:
    0.1956'
    TULIP ANGLE:
    18°
    $109.33
    Qty in Cart: 0
    Quantity:
    Price:
    $109.33
    Subtotal:
  • KIBBLEWHITE Valve Spring Kit 30-33650

    KIBBLEWHITE Valve Spring Kit 30-33650

    KIBBLEWHITE

    MSRP: $229.95
    $229.93
    KIBBLEWHITE Valve Spring Kit 30-33650Spring kit is designed with increased spring rates and high lift compatibility compared to the stock springs, Compatible with boosted or turbocharged applications, CNC-machined titanium retainers and Cr-Si dual...
    09263285
    SKU:
    09263285
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    RIDING STYLE:
    STREET
    SPRING LIFT:
    0,390'
    SPRING SEAT PRESSURE:
    49 LB
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    SPRING KIT
    SPRING LIFT IMPERIAL:
    0.390'
    TYPE:
    VALVE
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    RIDING STYLE:
    OFF-ROAD
    SPRING OPEN PRESSURE:
    160 LB
    UNITS:
    KIT
    MSRP: $229.95
    $229.93
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $229.95
    $229.93
    Subtotal:
  • KIBBLEWHITE Intake Valve 30-33662

    KIBBLEWHITE Intake Valve 30-33662

    KIBBLEWHITE

    MSRP: $37.95
    $37.55
    KIBBLEWHITE Intake Valve 30-33662Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...
    09263286
    SKU:
    09263286
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    LENGTH IMPERIAL:
    3.280'
    MODEL:
    BLACK DIAMOND™
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    30.00 MM
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    RIDING STYLE:
    OFF-ROAD
    TULIP ANGLE:
    20°
    UNITS:
    EACH
    STEM DIAMETER IMPERIAL:
    0.1766'
    MSRP: $37.95
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.95
    $37.55
    Subtotal:
  • KIBBLEWHITE Top End Service Kit 30-33700

    KIBBLEWHITE Top End Service Kit 30-33700

    KIBBLEWHITE

    $660.02
    KIBBLEWHITE Top End Service Kit 30-33700Kit includes all necessary parts for a complete top-end service/rebuild: pistons, piston rings, piston pins, gaskets, valves, and valve springs, Pistons fully machined from 2618 aluminum alloy with a performance...
    09263289
    SKU:
    09263289
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    TOP END SERVICE KIT
    $660.02
    Qty in Cart: 0
    Quantity:
    Price:
    $660.02
    Subtotal:
  • KIBBLEWHITE Top End Service Kit 60-61850

    KIBBLEWHITE Top End Service Kit 60-61850

    KIBBLEWHITE

    $660.02
    KIBBLEWHITE Top End Service Kit 60-61850Kit includes all necessary parts for a complete top-end service/rebuild: pistons, piston rings, piston pins, gaskets, valves, and valve springs, Pistons fully machined from 2618 aluminum alloy with a performance...
    09263290
    SKU:
    09263290
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    TOP END SERVICE KIT
    $660.02
    Qty in Cart: 0
    Quantity:
    Price:
    $660.02
    Subtotal:
  • KIBBLEWHITE Intake Valve Guide 82-82270

    KIBBLEWHITE Intake Valve Guide 82-82270

    KIBBLEWHITE

    MSRP: $18.95
    $18.54
    KIBBLEWHITE Intake Valve Guide 82-82270Precision-machined guides, Manganese bronze guide material is softer than nickel aluminum bronze valve guides, Excellent heat conductivity which promotes long valve life, Guides can be easily reamed with a...
    09263291
    SKU:
    09263291
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    INSIDE DIAMETER IMPERIAL:
    0.2155'
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.4353'
    SIZE IMPERIAL:
    STANDARD
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    MSRP: $18.95
    $18.54
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $18.95
    $18.54
    Subtotal:
  • KIBBLEWHITE Exhaust Valve Guide 82-82420

    KIBBLEWHITE Exhaust Valve Guide 82-82420

    KIBBLEWHITE

    MSRP: $18.95
    $18.54
    KIBBLEWHITE Exhaust Valve Guide 82-82420Precision-machined guides, Manganese bronze guide material is softer than nickel aluminum bronze valve guides, Excellent heat conductivity which promotes long valve life, Guides can be easily reamed with a...
    09263292
    SKU:
    09263292
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    PRODUCT NAME:
    VALVE GUIDE
    INSIDE DIAMETER IMPERIAL:
    0.2155'
    OUTSIDE DIAMETER IMPERIAL:
    0.4353'
    APPLICATION:
    EXHAUST
    MATERIAL:
    BRONZE
    SIZE IMPERIAL:
    STANDARD
    MSRP: $18.95
    $18.54
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $18.95
    $18.54
    Subtotal:
  • On Sale
    KIBBLEWHITE Valve Spring Kit 82-83300

    KIBBLEWHITE Valve Spring Kit 82-83300

    KIBBLEWHITE

    MSRP: $355.95
    Now: $228.00
    Was: $355.95
    KIBBLEWHITE Valve Spring Kit 82-83300Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and...
    09263293
    SKU:
    09263293
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    APPLICATION:
    INTAKE
    SPRING LIFT IMPERIAL:
    0.450'
    RIDING STYLE:
    UTV
    APPLICATION:
    EXHAUST
    SPRING OPEN PRESSURE:
    181 LB
    TYPE:
    VALVE
    MATERIAL:
    TITANIUM
    PRODUCT NAME:
    SPRING KIT
    SPRING LIFT:
    0,450'
    SPRING SEAT PRESSURE:
    64 LB
    UNITS:
    KIT
    MSRP: $355.95
    Now: $228.00
    Was: $355.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $355.95
    Now: $228.00
    Was: $355.95
    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!