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
  • KIBBLEWHITE Exhaust Valve 96-96008

    KIBBLEWHITE Exhaust Valve 96-96008

    KIBBLEWHITE

    $39.95
    KIBBLEWHITE Exhaust Valve 96-96008Black 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...
    09261700
    SKU:
    09261700
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    LENGTH IMPERIAL:
    3.815'
    STEM DIAMETER IMPERIAL:
    0.2342'
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BLACK DIAMOND™
    HEAD DIAMETER METRIC:
    21.00 MM
    RIDING STYLE:
    OFF-ROAD
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    24°
    UNITS:
    EACH
    $39.95
    Qty in Cart: 0
    Quantity:
    Price:
    $39.95
    Subtotal:
  • KIBBLEWHITE Intake Valve Guide 96-96010

    KIBBLEWHITE Intake Valve Guide 96-96010

    KIBBLEWHITE

    $19.95
    KIBBLEWHITE Intake Valve Guide 96-96010All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09261701
    SKU:
    09261701
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    VALVE GUIDE
    MATERIAL:
    C630 BRONZE
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.2360'
    SIZE IMPERIAL:
    STANDARD
    APPLICATION:
    INTAKE
    OUTSIDE DIAMETER IMPERIAL:
    0.4745'
    $19.95
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95
    Subtotal:
  • KIBBLEWHITE Exhaust Valve Guide 96-96020

    KIBBLEWHITE Exhaust Valve Guide 96-96020

    KIBBLEWHITE

    $19.95
    KIBBLEWHITE Exhaust Valve Guide 96-96020All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09261702
    SKU:
    09261702
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    VALVE GUIDE
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.4745'
    APPLICATION:
    EXHAUST
    INSIDE DIAMETER IMPERIAL:
    0.2360'
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    EACH
    $19.95
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95
    Subtotal:
  • KIBBLEWHITE Exhaust Valve 96-96266

    KIBBLEWHITE Exhaust Valve 96-96266

    KIBBLEWHITE

    $54.95
    KIBBLEWHITE Exhaust Valve 96-96266Black 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...
    09261713
    SKU:
    09261713
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BLACK DIAMOND™
    STEM DIAMETER IMPERIAL:
    0.1955'
    TULIP ANGLE:
    30°
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    HEAD DIAMETER METRIC:
    26.60 MM
    LENGTH IMPERIAL:
    3.665'
    PRODUCT NAME:
    VALVE
    RIDING STYLE:
    OFF-ROAD
    $54.95
    Qty in Cart: 0
    Quantity:
    Price:
    $54.95
    Subtotal:
  • KIBBLEWHITE Intake Valve Guide 96-96270

    KIBBLEWHITE Intake Valve Guide 96-96270

    KIBBLEWHITE

    $22.95
    KIBBLEWHITE Intake Valve Guide 96-96270All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09261715
    SKU:
    09261715
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    OUTSIDE DIAMETER IMPERIAL:
    0.3958'
    PRODUCT NAME:
    VALVE GUIDE
    INSIDE DIAMETER IMPERIAL:
    0.1960'
    MATERIAL:
    C630 BRONZE
    RIDING STYLE:
    OFF-ROAD
    $22.95
    Qty in Cart: 0
    Quantity:
    Price:
    $22.95
    Subtotal:
  • KIBBLEWHITE Exhaust Valve Guide 96-96280

    KIBBLEWHITE Exhaust Valve Guide 96-96280

    KIBBLEWHITE

    $22.95
    KIBBLEWHITE Exhaust Valve Guide 96-96280All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09261716
    SKU:
    09261716
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    INSIDE DIAMETER IMPERIAL:
    0.1960'
    MATERIAL:
    C630 BRONZE
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.3958'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    OFF-ROAD
    $22.95
    Qty in Cart: 0
    Quantity:
    Price:
    $22.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2026

    KIBBLEWHITE Valve Guide - Big Twin 20-2026

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2026Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261975
    SKU:
    09261975
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5710'
    SIZE IMPERIAL:
    OVERSIZE (+0.006')
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2026C

    KIBBLEWHITE Valve Guide - Big Twin 20-2026C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Valve Guide Big Twin 20-2026CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Made in the U.S.A.
    09261976
    SKU:
    09261976
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    MATERIAL:
    CAST IRON
    OUTSIDE DIAMETER IMPERIAL:
    0.5710'
    APPLICATION:
    INTAKE
    SIZE IMPERIAL:
    OVERSIZE (+0.006')
    UNITS:
    EACH
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2028 KIBBLEWHITE Valve Guide - Big Twin 20-2028

    KIBBLEWHITE Valve Guide - Big Twin 20-2028

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2028Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261977
    SKU:
    09261977
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5730'
    SIZE IMPERIAL:
    OVERSIZE (+0.008')
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2028C

    KIBBLEWHITE Valve Guide - Big Twin 20-2028C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Valve Guide Big Twin 20-2028CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Made in the U.S.A.
    09261978
    SKU:
    09261978
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.5730'
    SIZE IMPERIAL:
    OVERSIZE (+0.008')
    MATERIAL:
    CAST IRON
    APPLICATION:
    INTAKE
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2029 KIBBLEWHITE Valve Guide - Big Twin 20-2029

    KIBBLEWHITE Valve Guide - Big Twin 20-2029

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2029Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261979
    SKU:
    09261979
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.5730'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.010')
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    MATERIAL:
    BRONZE
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2029C

    KIBBLEWHITE Valve Guide - Big Twin 20-2029C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Valve Guide Big Twin 20-2029CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Made in the U.S.A.
    09261980
    SKU:
    09261980
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER IMPERIAL:
    0.5750'
    SIZE IMPERIAL:
    OVERSIZE (+0.010')
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    MATERIAL:
    CAST IRON
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2034 KIBBLEWHITE Valve Guide - Big Twin 20-2034

    KIBBLEWHITE Valve Guide - Big Twin 20-2034

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2034Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261981
    SKU:
    09261981
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.5690'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    MATERIAL:
    BRONZE
    SIZE IMPERIAL:
    OVERSIZE (+0.004')
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    UNITS:
    EACH
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2036 KIBBLEWHITE Valve Guide - Big Twin 20-2036

    KIBBLEWHITE Valve Guide - Big Twin 20-2036

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2036Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261982
    SKU:
    09261982
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    SIZE IMPERIAL:
    OVERSIZE (+0.006')
    APPLICATION:
    EXHAUST
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.5710'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    UNITS:
    EACH
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2036C

    KIBBLEWHITE Valve Guide - Big Twin 20-2036C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Valve Guide Big Twin 20-2036CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Made in the U.S.A.
    09261983
    SKU:
    09261983
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MATERIAL:
    CAST IRON
    OUTSIDE DIAMETER IMPERIAL:
    0.5710'
    SIZE IMPERIAL:
    OVERSIZE (+0.006')
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2038 KIBBLEWHITE Valve Guide - Big Twin 20-2038

    KIBBLEWHITE Valve Guide - Big Twin 20-2038

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2038Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261984
    SKU:
    09261984
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MATERIAL:
    BRONZE
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.5730'
    SIZE IMPERIAL:
    OVERSIZE (+0.008')
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2038C

    KIBBLEWHITE Valve Guide - Big Twin 20-2038C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Valve Guide Big Twin 20-2038CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Made in the U.S.A.
    09261985
    SKU:
    09261985
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    INSIDE DIAMETER IMPERIAL:
    0.3760'
    MATERIAL:
    CAST IRON
    OUTSIDE DIAMETER IMPERIAL:
    0.5730'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    APPLICATION:
    EXHAUST
    SIZE IMPERIAL:
    OVERSIZE (+0.010')
    UNITS:
    EACH
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • KIBBLEWHITE Cast Iron Valve Guide 20-2053C

    KIBBLEWHITE Cast Iron Valve Guide 20-2053C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Cast Iron Valve Guide 20-2053CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Accept special valve guide seals (sold separately), Made in the U.S.A.
    09261986
    SKU:
    09261986
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    MATERIAL:
    CAST IRON
    OUTSIDE DIAMETER IMPERIAL:
    0.6280'
    INSIDE DIAMETER IMPERIAL:
    0.3745'
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • KIBBLEWHITE Valve Guide - Big Twin 20-2054

    KIBBLEWHITE Valve Guide - Big Twin 20-2054

    KIBBLEWHITE

    $30.95
    KIBBLEWHITE Valve Guide Big Twin 20-2054Precision-machined from nickel bronze, Nickel content of 5% produces superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity, Compatible with no-lead fuel and...
    09261987
    SKU:
    09261987
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.3755'
    SIZE IMPERIAL:
    OVERSIZE (+0.004')
    MATERIAL:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.6290'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    $30.95
    Qty in Cart: 0
    Quantity:
    Price:
    $30.95
    Subtotal:
  • KIBBLEWHITE Cast Iron Valve Guide 20-2054C

    KIBBLEWHITE Cast Iron Valve Guide 20-2054C

    KIBBLEWHITE

    $8.95
    KIBBLEWHITE Cast Iron Valve Guide 20-2054CPrecision-machined from cast iron, Compatible with no-lead fuel and accept any type of valve-stem material, Accept special valve guide seals (sold separately), Made in the U.S.A.
    09261988
    SKU:
    09261988
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    INTAKE
    MATERIAL:
    CAST IRON
    OUTSIDE DIAMETER IMPERIAL:
    0.6290'
    INSIDE DIAMETER IMPERIAL:
    0.3745'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    $8.95
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    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!