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.
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K&L SUPPLY Valve Shim - 2.70/29.5mm - SZ 13-7671
K&L SUPPLY
$28.20K&L SUPPLY Valve Shim 2.70/29.5mm SZ 13-7671For shim-adjusted vehicles137671- SKU:
- 137671
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- VALVE SHIM THICKNESS METRIC:
- 2.70 MM
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- OUTSIDE DIAMETER METRIC:
- 29.50 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- WATERCRAFT
$28.20 -
K&L SUPPLY Valve Shim - 2.30/13mm - Kawasaki 13-7685
K&L SUPPLY
$28.20K&L SUPPLY Valve Shim 2.30/13mm Kawasaki 13-7685For shim-adjusted vehicles137685- SKU:
- 137685
- 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:
- 2.30 MM
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 5 PACK
$28.20 -
K&L SUPPLY Valve Shim - 2.40/13mm - Kawasaki 13-7687
K&L SUPPLY
$28.20K&L SUPPLY Valve Shim 2.40/13mm Kawasaki 13-7687For shim-adjusted vehicles137687- SKU:
- 137687
- 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:
- ATV
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.40 MM
$28.20 -
K&L SUPPLY Valve Shim - 2.50/13mm - Kawasaki 13-7689
K&L SUPPLY
$28.20K&L SUPPLY Valve Shim 2.50/13mm Kawasaki 13-7689For shim-adjusted vehicles137689- SKU:
- 137689
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- WATERCRAFT
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.50 MM
$28.20 -
K&L SUPPLY Valve Shim - 2.55/13mm - Kawasaki 13-7690
K&L SUPPLY
$28.20K&L SUPPLY Valve Shim 2.55/13mm Kawasaki 13-7690For shim-adjusted vehicles137690- SKU:
- 137690
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 2.55 MM
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- 5 PACK
$28.20 -
K&L SUPPLY Valve Shim - 2.60/13mm - Kawasaki 13-7691
K&L SUPPLY
$28.20K&L SUPPLY Valve Shim 2.60/13mm Kawasaki 13-7691For shim-adjusted vehicles137691- SKU:
- 137691
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- VALVE
- UNITS:
- 5 PACK
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- WATERCRAFT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.60 MM
$28.20 -
K&L SUPPLY Timing Belt - Honda 15-1449
K&L SUPPLY
$63.95K&L SUPPLY Timing Belt Honda 15-1449High-quality belts made in Japan151449- SKU:
- 151449
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- TIMING BELT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- BLACK
$63.95 -
K&L SUPPLY Timing Belt - Honda 15-1459
K&L SUPPLY
$91.95K&L SUPPLY Timing Belt Honda 15-1459High-quality belts made in Japan151459- SKU:
- 151459
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- TIMING BELT
- COLOR/FINISH:
- BLACK
- BASE COLOR:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$91.95Qty in Cart: 0Quantity:Price:$91.95Subtotal: -
K&L SUPPLY Water Pump Seal Kit - H/GL 15-4340
K&L SUPPLY
$39.95K&L SUPPLY Water Pump Seal Kit H/GL 15-4340Contain all necessary gaskets, O-rings and seals, Do not include mechanical seal, Made in Japan154340- SKU:
- 154340
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- WATER PUMP
$39.95 -
K&L SUPPLY Valve Shim Kit - Kawasaki 13-7006
K&L SUPPLY
$233.95K&L SUPPLY Valve Shim Kit Kawasaki 13-7006For shim-adjusted vehiclesKL137006- SKU:
- KL137006
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- PRODUCT NAME:
- SHIM KIT
- RIDING STYLE:
- STREET
- UNITS:
- 20 PIECE KIT
- OUTSIDE DIAMETER METRIC:
- 13.00 MM
- VALVE SHIM THICKNESS METRIC:
- 2.30 MM - 3.10 MM
- TYPE:
- VALVE
$233.95 -
On Sale
KOSO NORTH AMERICA Intake Manifold Gasket - Grom DP623K000E
KOSO NORTH AMERICA
MSRP: $6.95Now: $6.26Was: $6.95KOSO NORTH AMERICA Intake Manifold Gasket Grom DP623K000EThrottle body manifold gasket for use with OE or aftermarket manifolds09350860- SKU:
- 09350860
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- PAIR
MSRP: $6.95Now: $6.26Was: $6.95 -
On Sale
KOSO NORTH AMERICA Valve Head Kit - Big Bore - Grom MB623003
KOSO NORTH AMERICA
MSRP: $1,039.95Now: $935.96Was: $1,039.95KOSO NORTH AMERICA Valve Head Kit Big Bore Grom MB623003Ideal engine part to complete Koso's big bore kit, Unique four-valve design increases air flow and performance, Provides more power and torque, Features a forged piston, stainless steel 24 mm intake...09500754- SKU:
- 09500754
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- PRODUCT NAME:
- CYLINDER HEAD KIT
- FEATURES:
- WITH 170 CC BIG BORE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- TYPE:
- 4 VALVE
MSRP: $1,039.95Now: $935.96Was: $1,039.95 -
On Sale
KOSO NORTH AMERICA Valve Head Kit - Grom MC623000
KOSO NORTH AMERICA
MSRP: $749.95Now: $674.96Was: $749.95KOSO NORTH AMERICA Valve Head Kit Grom MC623000Ideal engine part to complete Koso's big bore kit, Unique four-valve design increases air flow and performance, Provides more power and torque, Features a forged piston, stainless steel 24 mm intake valves...09500755- SKU:
- 09500755
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- PRODUCT NAME:
- CYLINDER HEAD KIT
- UNITS:
- KIT
- TYPE:
- 4 VALVE
- FEATURES:
- HEAD KIT ONLY
- RIDING STYLE:
- STREET
- MATERIAL:
- STAINLESS STEEL
MSRP: $749.95Now: $674.96Was: $749.95 -
On Sale
KOSO NORTH AMERICA Big Bore Gasket Kit MA623100
KOSO NORTH AMERICA
MSRP: $33.95Now: $30.56Was: $33.95KOSO NORTH AMERICA Big Bore Gasket Kit MA623100Replacement gasket kit for Koso 170CC Big Bore Kit09343478- SKU:
- 09343478
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- BORE SIZE:
- 61,00 MM
- DISPLACEMENT:
- 170 CC
- STYLE:
- BIG BORE
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 61.00 MM
MSRP: $33.95Now: $30.56Was: $33.95 -
On Sale
KOSO NORTH AMERICA Camshaft - Big Bore Kit MM623002
KOSO NORTH AMERICA
MSRP: $159.95Now: $143.96Was: $159.95KOSO NORTH AMERICA Camshaft Big Bore Kit MM623002Optional camshaft kit can be used with stock engine, but delivers improved results when used with 170cc Big Bore kit09250893- SKU:
- 09250893
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- APPLICATION:
- EXHAUST
- EXHAUST LIFT METRIC:
- 8.50 MM
- INTAKE LIFT METRIC:
- 8.50 MM
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
MSRP: $159.95Now: $143.96Was: $159.95 -
On Sale
KOSO NORTH AMERICA Piston - Big Bore - Grom MD623000
KOSO NORTH AMERICA
MSRP: $110.95Now: $99.86Was: $110.95KOSO NORTH AMERICA Piston Big Bore Grom MD623000Compression ratio of 11.5 to 109103676- SKU:
- 09103676
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- BORE SIZE METRIC:
- 61.00 MM
- RIDING STYLE:
- STREET
- PISTON MATERIAL:
- FORGED ALUMINUM
- PISTON SIZE METRIC:
- 61.00 MM
- TYPE:
- BIG BORE
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
MSRP: $110.95Now: $99.86Was: $110.95 -
On Sale
KOSO NORTH AMERICA Big Bore Cylinder Kit MB623002
KOSO NORTH AMERICA
MSRP: $384.95Now: $346.46Was: $384.95KOSO NORTH AMERICA Big Bore Cylinder Kit MB623002Includes ceramic coated cylinder, 61mm forged piston, rings, pin, gasket kit and banjo bolts, Compression ratio of 11.5 to 1, Optional camshaft kit can be used with stock engine, but delivers improved...09031124- SKU:
- 09031124
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- BORE SIZE METRIC:
- 61.00 MM
- MATERIAL:
- FORGED
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- COLOR/FINISH:
- ALUMINUM
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- DISPLACEMENT:
- 170 CC
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STYLE:
- BIG BORE
MSRP: $384.95Now: $346.46Was: $384.95 -
On Sale
BELT DRIVES LTD. Timing Belt BDL-DVT-100
BELT DRIVES LTD.
MSRP: $85.95Now: $77.36Was: $85.95BELT DRIVES LTD. Timing Belt BDL-DVT-100Proven design is an exact replacement for OE belts, Manufactured to the highest quality standards to provide long, trouble-free service life09251123- SKU:
- 09251123
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- UNITS:
- PAIR
- PRODUCT NAME:
- TIMING BELT
- SIZE METRIC:
- 21 MM
- SIZE METRIC:
- 93T
- RIDING STYLE:
- STREET
MSRP: $85.95Now: $77.36Was: $85.95 -
On Sale
BELT DRIVES LTD. Timing Belt BDL-1198
BELT DRIVES LTD.
MSRP: $83.95Now: $75.56Was: $83.95BELT DRIVES LTD. Timing Belt BDL-1198Proven design is an exact replacement for OE belts, Manufactured to the highest quality standards to provide long, trouble-free service life09251115- SKU:
- 09251115
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- SIZE METRIC:
- 88T
- UNITS:
- PAIR
- SIZE METRIC:
- 21 MM
- PRODUCT NAME:
- TIMING BELT
- RIDING STYLE:
- STREET
MSRP: $83.95Now: $75.56Was: $83.95 -
On Sale
KOSO NORTH AMERICA Hi Flow Oil Pump - Grom NF623000
KOSO NORTH AMERICA
MSRP: $53.95Now: $48.56Was: $53.95KOSO NORTH AMERICA Hi Flow Oil Pump Grom NF623000Increases the oil flow by 40%, helping to prevent engine failure, Keeps the engine lubricated to optimize performance, Recommended for bikes with upgraded engines using the Koso North America 170cc Big...09320167- SKU:
- 09320167
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- FLOW RATE:
- HIGH VOLUME
- TYPE:
- OIL PUMP
- BASE FINISH:
- CHROME
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- PUMP
- RIDING STYLE:
- STREET
MSRP: $53.95Now: $48.56Was: $53.95
