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Street Bike Engine

Street Bike Engine

Street Bike Engine

Street Bike Engine Parts at JJ Motorsports

Rebuild and upgrade your street bike engine with precision parts from JJ Motorsports. Our inventory includes valves, complete gasket sets, and seals made from top-quality materials for optimal sealing, compression, and durability in high-performance applications. Compatible with Honda, Suzuki, BMW, Yamaha, and more, these components support full engine rebuilds, leak prevention, and enhanced reliability for sportbikes, cruisers, or tourers on the road or track.

Shop trusted brands like VESRAH for OEM-matching valves and gaskets. Explore related categories such as street bike air and fuel for intake upgrades or street bike drivetrain for transmission pairings.

Top Street Bike Engine Products

Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • KIBBLEWHITE Valve Seal - 6.5mm - Viton 71018-4

    KIBBLEWHITE Valve Seal - 6.5mm - Viton 71018-4

    KIBBLEWHITE

    $13.96
    Valve seal degradation is one of the most common causes of oil burning and compression loss in high-performance engines. KIBBLEWHITE's 6.5mm Viton seals are engineered to withstand extreme temperatures and aggressive valve spring pressures without...
    09260387
    SKU:
    09260387
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    MATERIAL:
    VITON
    OUTSIDE DIAMETER IMPERIAL:
    0.560'
    TYPE:
    VALVE
    UNITS:
    4 PACK
    APPLICATION:
    INTAKE
    STEM DIAMETER METRIC:
    6.50 MM
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    SEAL
    RIDING STYLE:
    STREET
    $13.96
    Qty in Cart: 0
    Quantity:
    Price:
    $13.96
    Subtotal:
  • KIBBLEWHITE Valve Seal - 7mm - Viton 71019-4

    KIBBLEWHITE Valve Seal - 7mm - Viton 71019-4

    KIBBLEWHITE

    $13.96
    Valve seal degradation leads to oil leakage, compression loss, and increased blowby—problems that compound quickly under high-RPM conditions. The KIBBLEWHITE Valve Seal 7mm ensures consistent sealing integrity across extended engine operation, meeting or...
    09260388
    SKU:
    09260388
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    APPLICATION:
    INTAKE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    MATERIAL:
    VITON
    STEM DIAMETER METRIC:
    7.00 MM
    TYPE:
    VALVE
    UNITS:
    4 PACK
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.565'
    PRODUCT NAME:
    SEAL
    RIDING STYLE:
    STREET
    $13.96
    Qty in Cart: 0
    Quantity:
    Price:
    $13.96
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.50 - 9.50mm 13-6780

    K&L SUPPLY Valve Shim - 2.50 - 9.50mm 13-6780

    K&L SUPPLY

    $15.00
    Precise valve clearance is critical for optimal engine performance, fuel efficiency, and longevity—especially in shim-adjusted valve train systems. K&L SUPPLY valve shims are manufactured to exact tolerances, ensuring consistent performance across engine...
    136780
    SKU:
    136780
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    UNITS:
    5 PACK
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    2.50 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.55 - 9.50mm 13-6781

    K&L SUPPLY Valve Shim - 2.55 - 9.50mm 13-6781

    K&L SUPPLY

    $15.00
    Proper valve clearance is critical to engine performance, fuel efficiency, and longevity—and this K&L SUPPLY shim delivers the precise adjustment your shim-adjusted engine needs. Whether you're dialing in a stock rebuild or fine-tuning a high-revving...
    136781
    SKU:
    136781
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.55 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    $15.00
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.70 - 9.50mm 13-6784

    K&L SUPPLY Valve Shim - 2.70 - 9.50mm 13-6784

    K&L SUPPLY

    $15.00
    Proper valve clearance is critical to engine performance, fuel efficiency, and longevity—and this K&L Supply shim gives you the precision adjustment your shim-adjusted valvetrain demands. Whether you're fine-tuning a high-revving race engine or...
    136784
    SKU:
    136784
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    2.70 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    $15.00
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.75 - 9.50mm 13-6785

    K&L SUPPLY Valve Shim - 2.75 - 9.50mm 13-6785

    K&L SUPPLY

    $15.00
    Valve shim clearance directly impacts engine efficiency, valve timing accuracy, and overall reliability—especially in high-performance and modified engines where tight tolerances are critical. K&L Supply's precision-engineered shims ensure your valve...
    136785
    SKU:
    136785
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    2.75 MM
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    $15.00
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.85 - 9.50mm 13-6787

    K&L SUPPLY Valve Shim - 2.85 - 9.50mm 13-6787

    K&L SUPPLY

    $13.01
    Valve shim adjustment is critical for maintaining proper valve clearance and preventing costly engine damage on shim-adjusted vehicles. Without precise shim sizing, you risk valve float at high RPM, incomplete combustion, and premature wear on critical...
    136787
    SKU:
    136787
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    VALVE SHIM THICKNESS METRIC:
    2.85 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $13.01
    Subtotal:
  • K&L SUPPLY Valve Shim Kit - Kawasaki/Yamaha 13-7007

    K&L SUPPLY Valve Shim Kit - Kawasaki/Yamaha 13-7007

    K&L SUPPLY

    $233.95
    Valve clearance directly impacts engine performance, fuel efficiency, and longevity—especially on shim-adjusted powerplants where precision matters. The K&L SUPPLY Valve Shim Kit 13-7007 provides OEM-quality shims engineered to restore proper valve lash...
    KL137007
    SKU:
    KL137007
    Availability:
    Ships Same Business Day
    Weight:
    2.04 LBS
    OUTSIDE DIAMETER METRIC:
    29.00 MM
    RIDING STYLE:
    STREET
    UNITS:
    20 PIECE KIT
    VALVE SHIM THICKNESS METRIC:
    2.30 MM - 3.10 MM
    PRODUCT NAME:
    SHIM KIT
    TYPE:
    VALVE
    $233.95
    Qty in Cart: 0
    Quantity:
    Price:
    $233.95
    Subtotal:
  • K&L SUPPLY Valve Shim Kit - Suzuki 13-7008

    K&L SUPPLY Valve Shim Kit - Suzuki 13-7008

    K&L SUPPLY

    $233.95
    Maintaining proper valve clearance is critical to engine performance, fuel efficiency, and longevity—and worn shims are a common culprit behind power loss and increased noise. The K&L SUPPLY Valve Shim Kit (MPN: 137008) provides precision-engineered...
    KL137008
    SKU:
    KL137008
    Availability:
    Ships Same Business Day
    Weight:
    1.25 LBS
    OUTSIDE DIAMETER METRIC:
    29.50 MM
    PRODUCT NAME:
    SHIM KIT
    VALVE SHIM THICKNESS METRIC:
    2.30 MM - 3.00 MM
    RIDING STYLE:
    STREET
    UNITS:
    20 PIECE KIT
    TYPE:
    VALVE
    Qty in Cart: 0
    Quantity:
    Price:
    $233.95
    Subtotal:
  • K&L SUPPLY Valve Shim Kit - Honda/Yamaha 13-7005

    K&L SUPPLY Valve Shim Kit - Honda/Yamaha 13-7005

    K&L SUPPLY

    $233.95
    Valve clearance directly impacts engine performance, fuel efficiency, and longevity—and shim adjustment is the most precise method for maintaining optimal clearances on Honda and Yamaha engines. The K&L SUPPLY Valve Shim Kit gives you the ability to dial...
    KL137005
    SKU:
    KL137005
    Availability:
    Ships Same Business Day
    Weight:
    1.90 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    STREET
    UNITS:
    20 PIECE KIT
    OUTSIDE DIAMETER METRIC:
    25.00 MM
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    2.30 MM - 3.10 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $233.95
    Subtotal:
  • POWERSTANDS RACING Oil Cap Kit - Silver - M20 x 2.5 00-01311-21

    POWERSTANDS RACING Oil Cap Kit - Silver - M20 x 2.5 00-01311-21

    POWERSTANDS RACING

    MSRP: $31.95
    $27.95
    Your factory oil cap won't survive sustained track temperatures or aggressive engine modifications. The POWERSTANDS Racing Oil Cap Kit replaces that weak point with a CNC-machined aluminum cap that handles extreme heat while keeping your engine sealed...
    09500424
    SKU:
    09500424
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    SILVER
    PRODUCT NAME:
    CAP KIT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    OIL FILLER
    UNITS:
    KIT
    DIAMETER - THREAD SIZE IMPERIAL:
    M20 X 2.5
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    MSRP: $31.95
    $27.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $31.95
    $27.95
    Subtotal:
  • POWERSTANDS RACING Oil Cap Kit - Gun Metal - M30 x 1.5 00-01314-29

    POWERSTANDS RACING Oil Cap Kit - Gun Metal - M30 x 1.5 00-01314-29

    POWERSTANDS RACING

    $31.95
    A quality oil cap might seem like a minor component, but it's your first line of defense against contamination and pressure loss in your engine bay. POWERSTANDS Racing's CNC-machined aluminum cap combines durability with heat resistance, ensuring...
    09500438
    SKU:
    09500438
    Availability:
    Ships Same Business Day
    Weight:
    0.36 LBS
    COLOR/FINISH:
    GUNMETAL
    DIAMETER - THREAD SIZE IMPERIAL:
    M30 X 1.5
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    TYPE:
    OIL FILLER
    COLOR/FINISH:
    ANODIZED
    PRODUCT NAME:
    CAP KIT
    RIDING STYLE:
    OFF-ROAD
    $31.95
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • POWERSTANDS RACING Oil Cap Kit - Black - M25 x 1.5 00-01315-22

    POWERSTANDS RACING Oil Cap Kit - Black - M25 x 1.5 00-01315-22

    POWERSTANDS RACING

    $31.95
    A quality oil cap isn't just a maintenance item—it's a critical seal that protects your engine from contamination and heat damage, especially under high-performance driving conditions. The POWERSTANDS Racing Oil Cap Kit eliminates cheap OEM caps that...
    09500450
    SKU:
    09500450
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    DIAMETER - THREAD SIZE IMPERIAL:
    M25 X 1.5
    PRODUCT NAME:
    CAP KIT
    COLOR/FINISH:
    ANODIZED
    COLOR/FINISH:
    BLACK
    UNITS:
    KIT
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    TYPE:
    OIL FILLER
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • POWERSTANDS RACING Oil Cap Kit - Red - M20 x 1.5 00-01310-24

    POWERSTANDS RACING Oil Cap Kit - Red - M20 x 1.5 00-01310-24

    POWERSTANDS RACING

    $31.95
    A quality oil cap isn't just about sealing your engine—it's about protecting your investment from heat damage and fluid loss during hard driving. The POWERSTANDS Racing Oil Cap Kit delivers CNC-machined precision with safety features that keep your...
    09500454
    SKU:
    09500454
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    DIAMETER - THREAD SIZE IMPERIAL:
    M20 X 1.5
    MATERIAL:
    ALUMINUM
    COLOR/FINISH:
    RED
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    TYPE:
    OIL FILLER
    COLOR/FINISH:
    ANODIZED
    PRODUCT NAME:
    CAP KIT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • POWERSTANDS RACING Oil Cap Kit - Red - M22 x 1.5 00-01312-24

    POWERSTANDS RACING Oil Cap Kit - Red - M22 x 1.5 00-01312-24

    POWERSTANDS RACING

    $31.95
    A quality oil cap isn't just a cover—it's a critical seal that prevents contamination and oil loss under high-heat racing conditions. This POWERSTANDS Racing kit eliminates the risk of loose caps with a safety-wired design that keeps your engine...
    09500456
    SKU:
    09500456
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    COLOR/FINISH:
    RED
    DIAMETER - THREAD SIZE IMPERIAL:
    M22 X 1.5
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    PRODUCT NAME:
    CAP KIT
    TYPE:
    OIL FILLER
    COLOR/FINISH:
    ANODIZED
    $31.95
    Qty in Cart: 0
    Quantity:
    Price:
    $31.95
    Subtotal:
  • SHOW CHROME Engine Side Cover - GL1800 52-963

    SHOW CHROME Engine Side Cover - GL1800 52-963

    SHOW CHROME

    $199.95
    The GL1800's engine side covers take a beating from road debris, boots, and regular wear. This SHOW CHROME replacement set restores that polished aesthetic while protecting your engine from scuffs and cosmetic damage. With integrated rubber toe scuff...
    09401928
    SKU:
    09401928
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    RIDING STYLE:
    STREET
    TYPE:
    SIDE COVER
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    COVER
    UNITS:
    PAIR
    Qty in Cart: 0
    Quantity:
    Price:
    $199.95
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.95 - 9.50mm 13-6789

    K&L SUPPLY Valve Shim - 2.95 - 9.50mm 13-6789

    K&L SUPPLY

    $15.00
    Valve clearance drift is inevitable on high-revving engines—and even slight deviations tank performance and invite catastrophic valve damage. K&L SUPPLY valve shims are precision-engineered to maintain exact clearance specifications, ensuring optimal...
    136789
    SKU:
    136789
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    UNITS:
    5 PACK
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    2.95 MM
    $15.00
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    Subtotal:
  • K&L SUPPLY Shim Starter Kit - Yamaha - 7.5mm 13-7016

    K&L SUPPLY Shim Starter Kit - Yamaha - 7.5mm 13-7016

    K&L SUPPLY

    $227.95
    Valve shim adjustment is critical for maintaining proper valve clearance and engine performance on shim-adjusted Yamaha models. Without precise shim sizing, you risk valve float at high RPM, increased wear, and potential engine damage. This K&L SUPPLY...
    137016
    SKU:
    137016
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    PRODUCT NAME:
    SHIM KIT
    VALVE SHIM THICKNESS METRIC:
    1.50 MM - 1.95 MM
    TYPE:
    VALVE
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $227.95
    Subtotal:
  • K&L SUPPLY Shim Starter Kit - Kawasaki - 9.5mm 13-7017

    K&L SUPPLY Shim Starter Kit - Kawasaki - 9.5mm 13-7017

    K&L SUPPLY

    $227.95
    Valve shim adjustment is critical for maintaining proper valve clearance and engine performance on shim-adjusted Kawasaki motorcycles. This K&L SUPPLY kit provides precision shims in the most common 9.5mm diameter, eliminating the need to source...
    137017
    SKU:
    137017
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    UNITS:
    KIT
    TYPE:
    VALVE
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER METRIC:
    9.50 MM
    PRODUCT NAME:
    SHIM KIT
    VALVE SHIM THICKNESS METRIC:
    2.30 MM - 2.75 MM
    $227.95
    Qty in Cart: 0
    Quantity:
    Price:
    $227.95
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.30/25mm - H/Y 13-7524

    K&L SUPPLY Valve Shim - 2.30/25mm - H/Y 13-7524

    K&L SUPPLY

    $28.20
    Valve clearance directly impacts engine efficiency, combustion quality, and component longevity—and shim-adjusted vehicles demand precision replacements. K&L Supply's 2.30mm valve shim ensures accurate valve lash settings without improvisation or...
    137524
    SKU:
    137524
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    WATERCRAFT
    OUTSIDE DIAMETER METRIC:
    25.00 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    UNITS:
    5 PACK
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    2.30 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $28.20
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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