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
- VESRAH Exhaust Valve GG-1002-EX – Precision-made to match OEM specs for reliable exhaust flow.
- VESRAH Intake Valve GG-1002-IN – High-quality materials for smooth intake performance.
- VESRAH Exhaust Valve GG-1003-EX – Durable construction for long-lasting engine efficiency.
- VESRAH Complete Gasket Kit - Rebel 250 VG-1068 – Comprehensive set with o-rings and seals for full rebuilds.
- VESRAH Complete Gasket Kit - CB 700 VG-1073-M – Includes all essential gaskets for engine overhauls.
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
-
COMETIC Clutch Gasket - Kawasaki EC950032AFM
COMETIC
$22.95A quality clutch gasket is critical to maintaining a reliable seal and preventing oil weeping that can compromise engine performance and cleanliness. The COMETIC Clutch Gasket (EC950032AFM) eliminates the need for messy sealants and simplifies service...09344042- SKU:
- 09344042
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET
- TYPE:
- CLUTCH COVER
- RIDING STYLE:
- STREET
$22.95 -
COMETIC Valve Cover Gasket - Honda VC122060AFM
COMETIC
$24.95A failing valve cover gasket leads to oil seepage, potential engine bay contamination, and the risk of oil reaching ignition sources. The COMETIC VC122060AFM restores a factory-fresh seal using engineered materials designed specifically for your Honda...09344043- SKU:
- 09344043
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- UNITS:
- EACH
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET
- TYPE:
- VALVE COVER
- RIDING STYLE:
- STREET
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
COMETIC Head Gasket - GSXR 750/1000 C8214-018
COMETIC
$123.95A head gasket failure can sideline your bike and compromise engine integrity—especially on high-output GSXR models running aggressive boost or elevated compression. The COMETIC C8214-018 delivers OEM-grade sealing with multi-layer construction designed...09343579- SKU:
- 09343579
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE METRIC:
- 75.00 MM
- FEATURES:
- WITH NO DOWEL PINS
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,018'
- TYPE:
- CYLINDER HEAD
- BORE SIZE:
- 75,00 MM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 0.46 MM
$123.95Qty in Cart: 0Quantity:Price:$123.95Subtotal: -
COMETIC Head Gasket - GSXR 1300 C8218
COMETIC
$103.95A head gasket failure on your GSXR 1300 means catastrophic engine damage and downtime you can't afford. The COMETIC C8218 is engineered to handle extreme combustion pressures and temperature swings without compromise, giving you the reliability needed...09343580- SKU:
- 09343580
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
- THICKNESS IMPERIAL:
- 0,030'
- BORE SIZE:
- 81,00 MM
- MATERIAL:
- STEEL
- BORE SIZE METRIC:
- 81.00 MM
- FEATURES:
- WITH 13 MM STUDS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$103.95 -
COMETIC Head Gasket - GSXR 1300 C8656
COMETIC
$103.95A head gasket is your engine's first line of defense against combustion pressure and fluid leakage. The COMETIC C8656 is engineered for the GSXR 1300 with multi-layer construction and premium sealing surfaces, ensuring reliable performance whether you're...09343790- SKU:
- 09343790
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- DISPLACEMENT:
- 1299 CC
- FEATURES:
- WITH NO DOWEL PINS
- MATERIAL:
- STEEL
- TYPE:
- CYLINDER HEAD
- BORE SIZE METRIC:
- 81.00 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BORE SIZE:
- 81,00 MM
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
$103.95 -
COMETIC Head Gasket - GSXR 1300 C8658
COMETIC
$103.95A head gasket failure can compromise your GSXR 1300's compression integrity and lead to costly engine damage. The COMETIC C8658 is engineered to seal reliably across extreme combustion pressures and temperature fluctuations without degradation. Choose...09343793- SKU:
- 09343793
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE SIZE METRIC:
- 84.00 MM
- DISPLACEMENT:
- 1396 CC
- BORE SIZE:
- 84,00 MM
- FEATURES:
- WITH NO DOWEL PINS
- MATERIAL:
- STEEL
- TYPE:
- CYLINDER HEAD
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$103.95Qty in Cart: 0Quantity:Price:$103.95Subtotal: -
COMETIC Clutch Gasket - Yamaha EC1151032AFM
COMETIC
$21.95A reliable clutch gasket is essential for maintaining a solid seal on your engine case and preventing oil weepage that can compromise performance and create a mess in your engine bay. The COMETIC Clutch Gasket uses an AFM composite material—a chemically...09343994- SKU:
- 09343994
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MODEL:
- HI-PERFORMANCE
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$21.95 -
COMETIC Shift Shaft Seal OS227
COMETIC
$4.95Countershaft seal leaks are a common maintenance issue that can compromise your transmission's integrity and lead to costly damage if left unchecked. The COMETIC Shift Shaft Seal OS227 is engineered to deliver reliable sealing performance where it...09350874- SKU:
- 09350874
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- APPLICATION:
- SHIFTER SHAFT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$4.95Qty in Cart: 0Quantity:Price:$4.95Subtotal: -
COMETIC Shift Shaft Seal OS420
COMETIC
$5.95Countershaft seal leaks are a common source of oil loss that compromises your transmission's reliability and performance. The COMETIC Shift Shaft Seal OS420 is a precision-engineered replacement seal that eliminates leaks at the source, ensuring proper...09350934- SKU:
- 09350934
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- APPLICATION:
- SHIFTER SHAFT
- UNITS:
- EACH
$5.95Qty in Cart: 0Quantity:Price:$5.95Subtotal: -
COMETIC Countershaft Seal OS425
COMETIC
$11.95Countershaft seal leaks compromise engine oil integrity and create messy, unreliable conditions in the garage or on the track. The COMETIC OS425 delivers precision sealing where it matters most, engineered to maintain proper tolerances under demanding...09350939- SKU:
- 09350939
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- APPLICATION:
- COUNTERSHAFT
- UNITS:
- EACH
$11.95Qty in Cart: 0Quantity:Price:$11.95Subtotal: -
Hot Cams Valve Shim 13mm x 2.60mm for Honda CRF450R 2002-2012 5PK1300260
HOT CAMS
$13.95Valve clearance drift is one of the most overlooked maintenance issues on high-mileage CRF450R engines—it directly impacts combustion efficiency, fuel economy, and engine longevity. Hot Cams valve shims are precision-engineered to tight tolerances,...09262332- SKU:
- 09262332
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.60 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
$13.95 -
Hot Cams Valve Shim 13mm x 2.70mm for Kawasaki ZR1100 1992-1995 5PK1300270
HOT CAMS
$13.95Valve clearance directly impacts engine efficiency, noise levels, and longevity—and improper shim sizing can lead to costly performance losses or mechanical failure. Hot Cams valve shims are precision-engineered to exacting tolerances, ensuring your...09262334- SKU:
- 09262334
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- RIDING STYLE:
- UTV
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- VALVE SHIM THICKNESS METRIC:
- 2.70 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
$13.95 -
RICK'S MOTORSPORT ELECTRIC Stator Gasket - Suzuki 25-307
RICK'S MOTORSPORT ELECTRIC
$17.95A worn or damaged stator cover gasket compromises your engine's seal integrity, leading to oil seepage, contamination of electrical components, and potential mid-race failure. RICK'S MOTORSPORT ELECTRIC's OEM-equivalent gasket restores a reliable barrier...09342603- SKU:
- 09342603
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- STATOR COVER
- PRODUCT NAME:
- GASKET
$17.95 -
RICK'S MOTORSPORT ELECTRIC Stator Gasket - Suzuki 25-308
RICK'S MOTORSPORT ELECTRIC
$12.95Replacements for OEM stator cover gaskets09342604- SKU:
- 09342604
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- TYPE:
- STATOR COVER
$12.95 -
RICK'S MOTORSPORT ELECTRIC Stator Gasket - Suzuki 25-310
RICK'S MOTORSPORT ELECTRIC
$12.95Replacements for OEM stator cover gaskets09342606- SKU:
- 09342606
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- STATOR COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$12.95 -
On Sale
Wiseco Wrist Pin 20mm x 66mm for Harley-Davidson Roadster 1000 XLS 1979-1985 S521
WISECO
MSRP: $24.99Now: $21.00Was: $24.99The Wiseco S521 wrist pin is engineered for Harley-Davidson Roadster engines that demand reliable, consistent performance under sustained high RPM operation. By pairing a lightweight design with superior thermal stability, this pin eliminates...S521- SKU:
- S521
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- SILICONE
- OUTSIDE DIAMETER:
- 20 MM
- OUTSIDE DIAMETER METRIC:
- 20 MM
- LENGTH METRIC:
- 66 MM
- UNITS:
- EACH
- APPLICATION:
- PISTON
- LENGTH:
- 66 MM
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- WRIST PIN
- RIDING STYLE:
- STREET
MSRP: $24.99Now: $21.00Was: $24.99 -
On Sale
Wiseco Piston Kit Kawasaki KZ 750 GPZ 1982-1985 K810
WISECO
MSRP: $854.95Now: $727.00Was: $854.95If you're rebuilding a Kawasaki KZ 750 GPZ or pushing your engine to its limits, factory pistons won't cut it. The Wiseco K810 kit delivers aerospace-grade durability and precision engineering in a complete, bolt-together package that eliminates...09030158- SKU:
- 09030158
- Availability:
- Ships Same Business Day
- Weight:
- 3.95 LBS
- RIDING STYLE:
- STREET
- BORE - OVERSIZE METRIC:
- +3.00 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 69.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- DISPLACEMENT:
- 810 CC
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 54.14 MM
- BORE - OVERSIZE:
- +3,00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
MSRP: $854.95Now: $727.00Was: $854.95 -
Wiseco Top End Bearing 18x22x22 for Honda CR250R 1986-2007 B1003
WISECO
$25.95The Wiseco B1003 top end bearing is engineered specifically for the demanding requirements of high-RPM CR250R engines, where bearing wear directly impacts power delivery and engine longevity. This precision component handles the extreme loads generated...B1003- SKU:
- B1003
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- LENGTH METRIC:
- 22 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- INSIDE DIAMETER METRIC:
- 18 MM
- MATERIAL:
- ALUMINUM
- OUTSIDE DIAMETER METRIC:
- 22 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- APPLICATION:
- PISTON
- MATERIAL:
- SILICONE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- TOP END
$25.95 -
Wiseco Top End Bearing Honda CR500R 1984-2001 B1004
WISECO
$25.95The Wiseco B1004 top end bearing is engineered to handle the extreme demands of high-RPM two-stroke performance, delivering the durability and precision your CR500R needs to stay competitive. A quality bearing directly impacts engine reliability and...B1004- SKU:
- B1004
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- ALUMINUM
- OUTSIDE DIAMETER METRIC:
- 25 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- TOP END
- UNITS:
- EACH
- LENGTH METRIC:
- 27.8 MM
- PRODUCT NAME:
- BEARING
- APPLICATION:
- PISTON
- INSIDE DIAMETER METRIC:
- 20 MM
- MATERIAL:
- SILICONE
- RIDING STYLE:
- OFF-ROAD
$25.95 -
Wiseco Top End Bearing for Honda CR80R 1986-2002 B1012
WISECO
$25.95The Wiseco B1012 top end bearing is engineered to handle the demanding RPM ranges of high-performance CR80R engines while maintaining precise clearances under sustained load. If you're running your bike hard—whether on the track or in competitive...B1012- SKU:
- B1012
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- PISTON
- MATERIAL:
- SILICONE
- RIDING STYLE:
- OFF-ROAD
- LENGTH METRIC:
- 16.2 MM
- OUTSIDE DIAMETER METRIC:
- 18 MM
- TYPE:
- TOP END
- INSIDE DIAMETER METRIC:
- 14 MM
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$25.95
