Street Bike Engine

Street Bike Engine

Street Bike Engine

At JJ Motorsports, we sell the best aftermarket street bike engine parts online. Our selection of parts are from the top brands in the industry, so you can be sure you're getting the best quality and performance for your money. We also offer free shipping on orders over $99, so you can save even more on your purchase. And if you're not satisfied with your purchase, we offer a 30-day return policy to make sure you're happy with your purchase. So whether you're looking for a new exhaust system, a performance air filter, or just a few replacement parts, JJ Motorsports is your one-stop shop for all your street bike engine needs.

  • K&L SUPPLY Valve Shim - 2.85/29mm - K/Y 13-7652

    K&L SUPPLY Valve Shim - 2.85/29mm - K/Y 13-7652

    K&L SUPPLY

    $28.20
    K&L SUPPLY Valve Shim 2.85/29mm K/Y 13-7652For shim-adjusted vehicles
    137652
    SKU:
    137652
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    OUTSIDE DIAMETER METRIC:
    29.00 MM
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    VALVE SHIM THICKNESS METRIC:
    2.85 MM
    $28.20
  • K&L SUPPLY Valve Shim - 2.30/29.5mm - SZ 13-7663

    K&L SUPPLY Valve Shim - 2.30/29.5mm - SZ 13-7663

    K&L SUPPLY

    $28.20
    K&L SUPPLY Valve Shim 2.30/29.5mm SZ 13-7663For shim-adjusted vehicles
    137663
    SKU:
    137663
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    2.30 MM
    OUTSIDE DIAMETER METRIC:
    29.50 MM
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    $28.20
  • K&L SUPPLY Valve Shim - 2.40/29.5mm - SZ 13-7665

    K&L SUPPLY Valve Shim - 2.40/29.5mm - SZ 13-7665

    K&L SUPPLY

    $28.20
    K&L SUPPLY Valve Shim 2.40/29.5mm SZ 13-7665For shim-adjusted vehicles
    137665
    SKU:
    137665
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    OUTSIDE DIAMETER METRIC:
    29.50 MM
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    VALVE SHIM THICKNESS METRIC:
    2.40 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    $28.20
  • K&L SUPPLY Valve Shim - 2.65/13mm - Kawasaki 13-7692

    K&L SUPPLY Valve Shim - 2.65/13mm - Kawasaki 13-7692

    K&L SUPPLY

    $28.20
    K&L SUPPLY Valve Shim 2.65/13mm Kawasaki 13-7692For shim-adjusted vehicles
    137692
    SKU:
    137692
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    VALVE SHIM THICKNESS METRIC:
    2.65 MM
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    13.00 MM
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    $28.20
  • K&L SUPPLY Valve Shim - 2.70/13mm - Kawasaki 13-7693

    K&L SUPPLY Valve Shim - 2.70/13mm - Kawasaki 13-7693

    K&L SUPPLY

    $28.20
    K&L SUPPLY Valve Shim 2.70/13mm Kawasaki 13-7693For shim-adjusted vehicles
    137693
    SKU:
    137693
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    13.00 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    VALVE SHIM THICKNESS METRIC:
    2.70 MM
    RIDING STYLE:
    STREET
    $28.20
  • KIBBLEWHITE Valve Springs - Standard 40-0449

    KIBBLEWHITE Valve Springs - Standard 40-0449

    KIBBLEWHITE

    $75.95
    KIBBLEWHITE Valve Springs Standard 40-0449Extensive R&D on all applications to provide high-performance components that last longer than OEM, Super-clean silicon wire used in valve springs is ground, not shaved, and X-rayed at regular intervals to check...
    09260332
    SKU:
    09260332
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    UNITS:
    KIT
    RIDING STYLE:
    SNOW
    TYPE:
    VALVE
    SPRING SEAT PRESSURE:
    90 LB
    PRODUCT NAME:
    SPRING
    RIDING STYLE:
    STREET
    SPRING LIFT IMPERIAL:
    0.425'
    SPRING OPEN PRESSURE:
    245 LB
    $75.95
  • KIBBLEWHITE Intake Valve Guide 40-0478

    KIBBLEWHITE Intake Valve Guide 40-0478

    KIBBLEWHITE

    $17.95
    KIBBLEWHITE Intake Valve Guide 40-0478Precision-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...
    09260333
    SKU:
    09260333
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE COLOR:
    BROWN
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    MATERIAL:
    C630 BRONZE
    APPLICATION:
    INTAKE
    COLOR/FINISH:
    BRONZE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.2745'
    OUTSIDE DIAMETER IMPERIAL:
    0.4752'
    $17.95
  • KIBBLEWHITE Intake Valve Guide 40-0479

    KIBBLEWHITE Intake Valve Guide 40-0479

    KIBBLEWHITE

    $17.95
    KIBBLEWHITE Intake Valve Guide 40-0479Precision-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...
    09260334
    SKU:
    09260334
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE COLOR:
    BROWN
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.4772'
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.002')
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    COLOR/FINISH:
    BRONZE
    INSIDE DIAMETER IMPERIAL:
    0.2745'
    $17.95
  • KIBBLEWHITE Exhaust Valve Guide 40-0482

    KIBBLEWHITE Exhaust Valve Guide 40-0482

    KIBBLEWHITE

    $17.95
    KIBBLEWHITE Exhaust Valve Guide 40-0482Precision-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...
    09260335
    SKU:
    09260335
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MATERIAL:
    C630 BRONZE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    APPLICATION:
    EXHAUST
    BASE COLOR:
    BROWN
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    EACH
    COLOR/FINISH:
    BRONZE
    INSIDE DIAMETER IMPERIAL:
    0.2745'
    OUTSIDE DIAMETER IMPERIAL:
    0.4752'
    $17.95
  • KIBBLEWHITE Exhaust Valve Guide 40-0483

    KIBBLEWHITE Exhaust Valve Guide 40-0483

    KIBBLEWHITE

    $17.95
    KIBBLEWHITE Exhaust Valve Guide 40-0483Precision-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...
    09260336
    SKU:
    09260336
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.4772'
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    BASE COLOR:
    BROWN
    PRODUCT NAME:
    VALVE GUIDE
    APPLICATION:
    EXHAUST
    SIZE IMPERIAL:
    OVERSIZE (+0.002')
    COLOR/FINISH:
    BRONZE
    INSIDE DIAMETER IMPERIAL:
    0.2745'
    UNITS:
    EACH
    $17.95
  • KIBBLEWHITE Intake Valve 40-4180H

    KIBBLEWHITE Intake Valve 40-4180H

    KIBBLEWHITE

    $37.95
    KIBBLEWHITE Intake Valve 40-4180HWhite 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.
    09260349
    SKU:
    09260349
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    23°
    HEAD DIAMETER METRIC:
    36.00 MM
    LENGTH IMPERIAL:
    3.615'
    PRODUCT NAME:
    VALVE
    MODEL:
    WHITE DIAMONDâ„¢
    STEM DIAMETER IMPERIAL:
    0.2745'
    APPLICATION:
    INTAKE
    MATERIAL:
    STAINLESS STEEL
    SIZE METRIC:
    STANDARD
    UNITS:
    EACH
    $37.95
  • KIBBLEWHITE Exhaust Valve 40-4183H

    KIBBLEWHITE Exhaust Valve 40-4183H

    KIBBLEWHITE

    $37.95
    KIBBLEWHITE Exhaust Valve 40-4183HWhite 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.
    09260351
    SKU:
    09260351
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    APPLICATION:
    EXHAUST
    LENGTH IMPERIAL:
    3.555'
    RIDING STYLE:
    STREET
    STEM DIAMETER IMPERIAL:
    0.2745'
    TULIP ANGLE:
    29°
    HEAD DIAMETER METRIC:
    30.00 MM
    UNITS:
    EACH
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    SIZE METRIC:
    STANDARD
    MODEL:
    WHITE DIAMONDâ„¢
    $37.95
  • KIBBLEWHITE Intake Valve 40-4281H

    KIBBLEWHITE Intake Valve 40-4281H

    KIBBLEWHITE

    $54.95
    KIBBLEWHITE Intake Valve 40-4281HWhite 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.
    09260353
    SKU:
    09260353
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    LENGTH IMPERIAL:
    3.560'
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    SIZE METRIC:
    OVERSIZE
    HEAD DIAMETER METRIC:
    38.50 MM
    MODEL:
    WHITE DIAMONDâ„¢
    STEM DIAMETER IMPERIAL:
    0.2745'
    TULIP ANGLE:
    23°
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    UNITS:
    EACH
    $54.95
  • KIBBLEWHITE Intake Valve - GSXR1300 - Standard 60-60008H

    KIBBLEWHITE Intake Valve - GSXR1300 - Standard 60-60008H

    KIBBLEWHITE

    $26.95
    KIBBLEWHITE Intake Valve GSXR1300 Standard 60-60008HBlack Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and...
    09260355
    SKU:
    09260355
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    LENGTH IMPERIAL:
    3.740'
    HEAD DIAMETER METRIC:
    33.00 MM
    STEM DIAMETER IMPERIAL:
    0.1962'
    TULIP ANGLE:
    18°
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    APPLICATION:
    INTAKE
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    UNITS:
    EACH
    $26.95
  • KIBBLEWHITE Exhaust Valve - GSXR1300 - Standard 60-60010H

    KIBBLEWHITE Exhaust Valve - GSXR1300 - Standard 60-60010H

    KIBBLEWHITE

    $26.95
    KIBBLEWHITE Exhaust Valve GSXR1300 Standard 60-60010HBlack Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and...
    09260357
    SKU:
    09260357
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    STEM DIAMETER IMPERIAL:
    0.1956'
    APPLICATION:
    EXHAUST
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    17°
    HEAD DIAMETER METRIC:
    27.50 MM
    UNITS:
    EACH
    LENGTH IMPERIAL:
    3.735'
    MODEL:
    TENSILITE®
    RIDING STYLE:
    STREET
    $26.95
  • KIBBLEWHITE Valve Guide 60-60020

    KIBBLEWHITE Valve Guide 60-60020

    KIBBLEWHITE

    $15.95
    KIBBLEWHITE Valve Guide 60-60020Precision-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 minimal...
    09260360
    SKU:
    09260360
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    COLOR/FINISH:
    BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.4170'
    MATERIAL:
    C630 BRONZE
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE GUIDE
    UNITS:
    EACH
    BASE COLOR:
    BROWN
    INSIDE DIAMETER IMPERIAL:
    0.1950'
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    STANDARD
    $15.95
  • KIBBLEWHITE Valve Spring Kit 90-9034

    KIBBLEWHITE Valve Spring Kit 90-9034

    KIBBLEWHITE

    $191.95
    KIBBLEWHITE Valve Spring Kit 90-9034Extensive R&D on all applications to provide high-performance components that last longer than OEM, Super-clean silicon wire used in valve springs is ground, not shaved, and X-rayed at regular intervals to check for...
    09262845
    SKU:
    09262845
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    RIDING STYLE:
    STREET
    SPRING LIFT IMPERIAL:
    0.367'
    UNITS:
    KIT
    APPLICATION:
    EXHAUST
    SPRING OPEN PRESSURE:
    196 LB
    TYPE:
    VALVE
    APPLICATION:
    INTAKE
    MATERIAL:
    TITANIUM
    PRODUCT NAME:
    SPRING KIT
    SPRING SEAT PRESSURE:
    104 IB
    $191.95
  • KIBBLEWHITE Intake Valve 90-9035

    KIBBLEWHITE Intake Valve 90-9035

    KIBBLEWHITE

    $37.95
    KIBBLEWHITE Intake Valve 90-9035Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...
    09262846
    SKU:
    09262846
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    STEM DIAMETER IMPERIAL:
    0.3130'
    TULIP ANGLE:
    23°
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    42.00 MM
    LENGTH IMPERIAL:
    3.885'
    UNITS:
    EACH
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    $37.95
  • KIBBLEWHITE Exhaust Valve 90-9036

    KIBBLEWHITE Exhaust Valve 90-9036

    KIBBLEWHITE

    $37.95
    KIBBLEWHITE Exhaust Valve 90-9036Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...
    09262849
    SKU:
    09262849
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    HEAD DIAMETER METRIC:
    38.00 MM
    LENGTH IMPERIAL:
    3.885'
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    STEM DIAMETER IMPERIAL:
    0.3125'
    TULIP ANGLE:
    29°
    $37.95