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!
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- Qty in Cart
- Quantity
- Price
- Subtotal
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KIBBLEWHITE Intake Valve - Titanium - Yamaha 80-80912T
KIBBLEWHITE
$92.51Tensilite® 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 corrosion resistant, Made in the U.S.A.09262672- SKU:
- 09262672
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- TITANIUM
- MODEL:
- TENSILITE®
- STEM DIAMETER IMPERIAL:
- 0.1962'
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 31.00 MM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- TULIP ANGLE:
- 18°
$92.51 -
KIBBLEWHITE Exhaust Valve - Titanium - Yamaha 80-80916T
KIBBLEWHITE
$92.51Tensilite® 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 corrosion resistant, Made in the U.S.A.09262673- SKU:
- 09262673
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 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 -
KIBBLEWHITE Intake Valve Guide 80-80920
KIBBLEWHITE
$15.92All 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.09262674- SKU:
- 09262674
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- INSIDE DIAMETER IMPERIAL:
- 0.1962'
- MATERIAL:
- BRONZE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- NICKEL
- OUTSIDE DIAMETER IMPERIAL:
- 0.3957'
- SIZE IMPERIAL:
- STANDARD
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- MATERIAL:
- AMPCO-45
- PRODUCT NAME:
- VALVE GUIDE
$15.92 -
KIBBLEWHITE Exhaust Valve Guide 80-80930
KIBBLEWHITE
$15.92All 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.09262676- SKU:
- 09262676
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- OUTSIDE DIAMETER IMPERIAL:
- 0.3563'
- PRODUCT NAME:
- VALVE GUIDE
- MATERIAL:
- AMPCO-45
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 0.1760'
- MATERIAL:
- BRONZE
- MATERIAL:
- NICKEL
- SIZE IMPERIAL:
- STANDARD
$15.92 -
KIBBLEWHITE Intake Valve 82-82462
KIBBLEWHITE
$37.55Black 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.S.A.09262680- SKU:
- 09262680
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.775'
- HEAD DIAMETER METRIC:
- 37.72 MM
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 17°
- APPLICATION:
- INTAKE
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.2160'
$37.55 -
KIBBLEWHITE Intake Valve 82-82463
KIBBLEWHITE
$37.55Black 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.S.A.09262681- SKU:
- 09262681
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- HEAD DIAMETER METRIC:
- 38.72 MM
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2160'
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- LENGTH IMPERIAL:
- 3.775'
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- ATV
- TULIP ANGLE:
- 17°
$37.55 -
KIBBLEWHITE Exhaust Valve 82-82466
KIBBLEWHITE
$37.55Black 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.S.A.09262682- SKU:
- 09262682
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- APPLICATION:
- EXHAUST
- HEAD DIAMETER METRIC:
- 32.44 MM
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.815'
- TULIP ANGLE:
- 25°
- PRODUCT NAME:
- VALVE
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.2155'
$37.55 -
KIBBLEWHITE Exhaust Valve Guide 82-82470
KIBBLEWHITE
$18.54All 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.09262684- SKU:
- 09262684
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE GUIDE
- INSIDE DIAMETER IMPERIAL:
- 0.2155'
- MATERIAL:
- C630 BRONZE
- OUTSIDE DIAMETER IMPERIAL:
- 0.4353'
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- SIZE IMPERIAL:
- STANDARD
$18.54 -
KIBBLEWHITE Intake Valve Guide 82-82480
KIBBLEWHITE
$18.54All 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.09262686- SKU:
- 09262686
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- INSIDE DIAMETER IMPERIAL:
- 0.2160'
- MATERIAL:
- C630 BRONZE
- PRODUCT NAME:
- VALVE GUIDE
- SIZE IMPERIAL:
- STANDARD
- OUTSIDE DIAMETER IMPERIAL:
- 0.4353'
- UNITS:
- EACH
$18.54 -
KIBBLEWHITE Exhaust Valve - Titanium - KTM 96-96416T
KIBBLEWHITE
$109.33Tensilite® 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 corrosion resistant, Made in the U.S.A.09262708- SKU:
- 09262708
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- TENSILITE®
- HEAD DIAMETER METRIC:
- 26.55 MM
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- TULIP ANGLE:
- 30°
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.1955'
$109.33 -
KIBBLEWHITE Intake Valve Guide 96-96420
KIBBLEWHITE
$24.89All 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.09262709- SKU:
- 09262709
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- SIZE IMPERIAL:
- STANDARD
- APPLICATION:
- INTAKE
- MATERIAL:
- NICKEL
- OUTSIDE DIAMETER IMPERIAL:
- 0.4352'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- BRONZE
- INSIDE DIAMETER IMPERIAL:
- 0.1960'
- MATERIAL:
- AMPCO-45
- PRODUCT NAME:
- VALVE GUIDE
$24.89 -
KIBBLEWHITE Intake Valve 40-40921
KIBBLEWHITE
$31.01Black 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.S.A.09262373- SKU:
- 09262373
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.1960'
- HEAD DIAMETER METRIC:
- 31.00 MM
- LENGTH IMPERIAL:
- 3.610'
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- UNITS:
- EACH
- TULIP ANGLE:
- 10°
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- UTV
$31.01 -
KIBBLEWHITE Exhaust Valve 40-40924
KIBBLEWHITE
$31.01Black 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.S.A.09262374- SKU:
- 09262374
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- LENGTH IMPERIAL:
- 3.655'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 26.00 MM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- UTV
- MODEL:
- BLACK DIAMOND™
- RIDING STYLE:
- ATV
- STEM DIAMETER IMPERIAL:
- 0.1955'
- TULIP ANGLE:
- 10°
$31.01 -
KIBBLEWHITE Exhaust Valve 82-82367
KIBBLEWHITE
$37.55Black 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.S.A.09262394- SKU:
- 09262394
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 30.21 MM
- RIDING STYLE:
- ATV
- APPLICATION:
- EXHAUST
- LENGTH IMPERIAL:
- 3.805'
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 25°
- STEM DIAMETER IMPERIAL:
- 0.2155'
$37.55 -
KIBBLEWHITE Intake Valve Guide 82-82370
KIBBLEWHITE
$18.54All 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.09262395- SKU:
- 09262395
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- ATV
- INSIDE DIAMETER IMPERIAL:
- 0.2160'
- PRODUCT NAME:
- VALVE GUIDE
- SIZE IMPERIAL:
- STANDARD
- MATERIAL:
- AMPCO-45
- OUTSIDE DIAMETER IMPERIAL:
- 0.4353'
- UNITS:
- EACH
$18.54 -
KIBBLEWHITE Exhaust Valve 82-82316
KIBBLEWHITE
$37.55Black 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.S.A.09262402- SKU:
- 09262402
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- ATV
- LENGTH IMPERIAL:
- 4.555'
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- TULIP ANGLE:
- 11°
- UNITS:
- EACH
- HEAD DIAMETER METRIC:
- 30.00 MM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- STEM DIAMETER IMPERIAL:
- 0.2352'
$37.55 -
KIBBLEWHITE Intake Valve 40-4372H
KIBBLEWHITE
$54.10White Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel or Inconel-751, Electroplated with a 360º anode, to produce an even coat of the highest grade hard chrome finish, Made in the U.S.A.KW404372H- SKU:
- KW404372H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- HEAD DIAMETER METRIC:
- 29.00 MM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- SIZE METRIC:
- STANDARD
- TULIP ANGLE:
- 20°
- MODEL:
- WHITE DIAMOND™
- RIDING STYLE:
- OFF-ROAD
- STEM DIAMETER IMPERIAL:
- 0.1765'
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.360'
$54.10 -
KIBBLEWHITE Exhaust Valve 40-4373H
KIBBLEWHITE
$54.10White Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel or Inconel-751, Electroplated with a 360º anode, to produce an even coat of the highest grade hard chrome finish, Made in the U.S.A.KW404373H- SKU:
- KW404373H
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- HEAD DIAMETER METRIC:
- 25.00 MM
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- SIZE METRIC:
- STANDARD
- TULIP ANGLE:
- 20°
- APPLICATION:
- EXHAUST
- MODEL:
- WHITE DIAMOND™
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 3.375'
- STEM DIAMETER IMPERIAL:
- 0.1760'
$54.10 -
KIBBLEWHITE Exhaust Valve 80-80014
KIBBLEWHITE
$54.10Black 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.S.A.KW8080014- SKU:
- KW8080014
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- STEM DIAMETER IMPERIAL:
- 0.2745'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- BLACK DIAMOND™
- PRODUCT NAME:
- VALVE
- TULIP ANGLE:
- 29°
- HEAD DIAMETER METRIC:
- 34.00 MM
- LENGTH IMPERIAL:
- 2.945'
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$54.10 -
KIBBLEWHITE Valve Spring Kit 80-80030
KIBBLEWHITE
$178.31Black 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 hard chrome stems, Spring sets...KW8080030- SKU:
- KW8080030
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- SPRING LIFT:
- 0,345'
- SPRING LIFT IMPERIAL:
- 0.345'
- SPRING OPEN PRESSURE:
- 145 LB
- TYPE:
- VALVE
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- UTV
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SPRING KIT
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- SPRING SEAT PRESSURE:
- 55 LB
- UNITS:
- KIT
$178.31
