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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
  • On Sale
    KIBBLEWHITE Valve Seal - 5.5 mm - Viton 71016-4

    KIBBLEWHITE Valve Seal - 5.5 mm - Viton 71016-4

    KIBBLEWHITE

    MSRP: $13.96
    Now: $12.56
    Was: $13.96
    Valve seal degradation is a silent killer of engine performance and longevity. KIBBLEWHITE's 5.5mm Viton seals are engineered to withstand extreme heat cycles and aggressive oil conditions—delivering...
    09260386
    SKU:
    09260386
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.425'
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    STEM DIAMETER METRIC:
    5.50 MM
    APPLICATION:
    INTAKE
    APPLICATION:
    EXHAUST
    TYPE:
    VALVE
    MATERIAL:
    VITON
    PRODUCT NAME:
    SEAL
    RIDING STYLE:
    STREET
    UNITS:
    4 PACK
    MSRP: $13.96
    Now: $12.56
    Was: $13.96
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $13.96
    Now: $12.56
    Was: $13.96
    Subtotal:
  • On Sale
    KIBBLEWHITE Tappet Block 70-0448

    KIBBLEWHITE Tappet Block 70-0448

    KIBBLEWHITE

    MSRP: $50.42
    Now: $45.38
    Was: $50.42
    If you're pushing your engine to the limit, your tappet block needs to keep pace. The KIBBLEWHITE 70-0448 delivers superior oiling precision and material durability where it matters most—under...
    09290025
    SKU:
    09290025
    Availability:
    Ships Same Business Day
    Weight:
    0.28 LBS
    MATERIAL:
    NICKEL ALUMINUM BRONZE
    PRODUCT NAME:
    TAPPET BLOCK KIT
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    MSRP: $50.42
    Now: $45.38
    Was: $50.42
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $50.42
    Now: $45.38
    Was: $50.42
    Subtotal:
  • K&L SUPPLY Valve Shim - 1.80 - 7.50mm 13-6735

    K&L SUPPLY Valve Shim - 1.80 - 7.50mm 13-6735

    K&L SUPPLY

    $14.10
    Maintaining precise valve clearance is critical for engine reliability, performance, and longevity. If your shim-adjusted motorcycle or powersports engine has drifted out of spec, this K&L Supply...
    136735
    SKU:
    136735
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    UNITS:
    5 PACK
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    1.80 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    $14.10
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • K&L SUPPLY Valve Shim - 1.85 - 7.50mm 13-6736

    K&L SUPPLY Valve Shim - 1.85 - 7.50mm 13-6736

    K&L SUPPLY

    $14.10
    Valve clearance drift happens gradually and silently—until it compromises your engine's efficiency and longevity. This K&L SUPPLY valve shim maintains precise valve lash geometry, ensuring optimal...
    136736
    SKU:
    136736
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    VALVE SHIM THICKNESS METRIC:
    1.85 MM
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • K&L SUPPLY Valve Shim - 1.90 - 7.50mm 13-6737

    K&L SUPPLY Valve Shim - 1.90 - 7.50mm 13-6737

    K&L SUPPLY

    $14.10
    Valve clearance drift is one of the most common reasons for performance loss and engine damage in high-revving applications. K&L SUPPLY's precision-engineered valve shims restore exact valve timing...
    136737
    SKU:
    136737
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    1.90 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    $14.10
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • K&L SUPPLY Valve Shim - 1.95 - 7.50mm 13-6738

    K&L SUPPLY Valve Shim - 1.95 - 7.50mm 13-6738

    K&L SUPPLY

    $14.10
    Proper valve clearance is critical to engine performance, fuel efficiency, and longevity—and shim-adjusted valve systems require precision replacements when wear occurs. This K&L SUPPLY valve shim...
    136738
    SKU:
    136738
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    1.95 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    $14.10
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.00 - 7.50mm 13-6739

    K&L SUPPLY Valve Shim - 2.00 - 7.50mm 13-6739

    K&L SUPPLY

    $14.10
    Valve clearance is critical to engine performance and longevity—improper adjustment leads to valve float, loss of compression, and premature wear. The K&L SUPPLY Valve Shim (2.00mm x 7.50mm) gives...
    136739
    SKU:
    136739
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.00 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.15 - 7.50mm 13-6742

    K&L SUPPLY Valve Shim - 2.15 - 7.50mm 13-6742

    K&L SUPPLY

    $14.10
    Precise valve clearance is critical to engine performance, reliability, and longevity—especially in high-revving builds where even 0.05mm of deviation can cause timing issues or valve float. The K&L...
    136742
    SKU:
    136742
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    VALVE SHIM THICKNESS METRIC:
    2.15 MM
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    $14.10
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • K&L SUPPLY Valve Shim - 2.45 - 7.50mm 13-6748

    K&L SUPPLY Valve Shim - 2.45 - 7.50mm 13-6748

    K&L SUPPLY

    $14.10
    Maintaining proper valve clearance is critical to engine longevity and consistent performance, especially on shim-adjusted vehicles where wear directly impacts combustion efficiency and valve train...
    136748
    SKU:
    136748
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    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
    OUTSIDE DIAMETER METRIC:
    7.50 MM
    PRODUCT NAME:
    SHIM
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    2.45 MM
    $14.10
    Qty in Cart: 0
    Quantity:
    Price:
    $14.10
    Subtotal:
  • On Sale
    KIBBLEWHITE Valve Seal - 6.5mm - Viton 71018-4

    KIBBLEWHITE Valve Seal - 6.5mm - Viton 71018-4

    KIBBLEWHITE

    MSRP: $13.96
    Now: $12.56
    Was: $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...
    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
    MSRP: $13.96
    Now: $12.56
    Was: $13.96
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $13.96
    Now: $12.56
    Was: $13.96
    Subtotal:
  • On Sale
    KIBBLEWHITE Valve Seal - 7mm - Viton 71019-4

    KIBBLEWHITE Valve Seal - 7mm - Viton 71019-4

    KIBBLEWHITE

    MSRP: $13.96
    Now: $12.56
    Was: $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...
    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
    MSRP: $13.96
    Now: $12.56
    Was: $13.96
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $13.96
    Now: $12.56
    Was: $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...
    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...
    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...
    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...
    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,...
    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...
    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
    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...
    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...
    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...
    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:
  • 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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