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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 Intake Valve - Standard - YZFR1 80-80662T

    KIBBLEWHITE Intake Valve - Standard - YZFR1 80-80662T

    KIBBLEWHITE

    MSRP: $109.33
    Now: $98.40
    Was: $109.33
    OEM intake valves wear out under extreme engine loads, compromising combustion efficiency and throttle response. The KIBBLEWHITE Tensilite® intake valve delivers the durability and precision your...
    09263271
    SKU:
    09263271
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    RIDING STYLE:
    OFF-ROAD
    STEM DIAMETER IMPERIAL:
    0.1960'
    HEAD DIAMETER METRIC:
    31.00 MM
    TULIP ANGLE:
    25°
    PRODUCT NAME:
    VALVE
    APPLICATION:
    INTAKE
    MATERIAL:
    TITANIUM
    MODEL:
    TENSILITE®
    UNITS:
    EACH
    MSRP: $109.33
    Now: $98.40
    Was: $109.33
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $109.33
    Now: $98.40
    Was: $109.33
    Subtotal:
  • On Sale
    KIBBLEWHITE Keeper Set 80-80660

    KIBBLEWHITE Keeper Set 80-80660

    KIBBLEWHITE

    MSRP: $50.46
    Now: $45.41
    Was: $50.46
    Valve keepers are a critical safety component that locks your valve springs in place under extreme pressure and RPM—failure here means catastrophic engine damage. Kibblewhite's 80-80660 keeper set...
    09263272
    SKU:
    09263272
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    RIDING STYLE:
    STREET
    UNITS:
    SET
    LENGTH IMPERIAL:
    0.221'
    MATERIAL:
    STEEL
    PRODUCT NAME:
    KEEPER SET
    STEM DIAMETER IMPERIAL:
    0.177'
    MSRP: $50.46
    Now: $45.41
    Was: $50.46
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $50.46
    Now: $45.41
    Was: $50.46
    Subtotal:
  • On Sale
    KIBBLEWHITE Retainer Set - 16 pack 40-40501

    KIBBLEWHITE Retainer Set - 16 pack 40-40501

    KIBBLEWHITE

    MSRP: $177.28
    Now: $159.55
    Was: $177.28
    Valve retainers are critical to maintaining valve train stability under extreme RPM and boost conditions—failure here means catastrophic engine damage. The KIBBLEWHITE 40-40501 Retainer Set delivers...
    09263274
    SKU:
    09263274
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    RETAINER SET
    RIDING STYLE:
    STREET
    MATERIAL:
    HIGH TENSILE STEEL
    UNITS:
    SET
    MSRP: $177.28
    Now: $159.55
    Was: $177.28
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $177.28
    Now: $159.55
    Was: $177.28
    Subtotal:
  • On Sale
    KIBBLEWHITE Guide Valve - Standard 70-0331

    KIBBLEWHITE Guide Valve - Standard 70-0331

    KIBBLEWHITE

    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Valve guides are critical to maintaining proper valve seat geometry and preventing excessive valve stem wear—issues that directly compromise combustion efficiency and engine longevity. The...
    09261668
    SKU:
    09261668
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    APPLICATION:
    EXHAUST
    APPLICATION:
    INTAKE
    MATERIAL:
    C630 BRONZE
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.3105'
    OUTSIDE DIAMETER IMPERIAL:
    0.501'
    SIZE IMPERIAL:
    STANDARD
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Subtotal:
  • On Sale
    KIBBLEWHITE Guide Valve - +.002 70-0332

    KIBBLEWHITE Guide Valve - +.002 70-0332

    KIBBLEWHITE

    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Valve guide wear is one of the most overlooked causes of oil consumption and reduced ring sealing in high-mileage and boosted engines. The KIBBLEWHITE +.002 Guide addresses this by offering...
    09261669
    SKU:
    09261669
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    APPLICATION:
    INTAKE
    INSIDE DIAMETER IMPERIAL:
    0.3105'
    APPLICATION:
    EXHAUST
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.503'
    UNITS:
    EACH
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    STREET
    SIZE IMPERIAL:
    OVERSIZE (+0.002')
    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Subtotal:
  • On Sale
    KIBBLEWHITE Guide Valve - +.004 70-0333

    KIBBLEWHITE Guide Valve - +.004 70-0333

    KIBBLEWHITE

    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Valve guide wear is a silent killer of engine performance, leading to oil consumption, compression loss, and shortened engine life. The KIBBLEWHITE Guide Valve +.004 is engineered from C63000 nickel...
    09261670
    SKU:
    09261670
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    APPLICATION:
    INTAKE
    INSIDE DIAMETER IMPERIAL:
    0.3105'
    SIZE IMPERIAL:
    OVERSIZE (+0.004')
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.505'
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    MATERIAL:
    C630 BRONZE
    PRODUCT NAME:
    VALVE GUIDE
    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $29.60
    Now: $26.64
    Was: $29.60
    Subtotal:
  • On Sale
    KIBBLEWHITE Intake Valve 70-4228

    KIBBLEWHITE Intake Valve 70-4228

    KIBBLEWHITE

    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Intake valve performance directly impacts your engine's breathing efficiency, combustion quality, and overall power output. The KIBBLEWHITE Black Diamondâ„¢ valve delivers measurable gains through...
    09261675
    SKU:
    09261675
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    HEAD DIAMETER METRIC:
    40.64 MM
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.3105'
    UNITS:
    EACH
    APPLICATION:
    INTAKE
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    TULIP ANGLE IMPERIAL:
    1.5° R
    LENGTH IMPERIAL:
    3.850'
    MATERIAL:
    CAST IRON
    TULIP ANGLE:
    1,5' R
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Subtotal:
  • On Sale
    KIBBLEWHITE Intake Valve 70-4229

    KIBBLEWHITE Intake Valve 70-4229

    KIBBLEWHITE

    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Intake valve performance directly impacts cylinder filling efficiency and combustion consistency—two factors that separate competitive engines from the rest. The Kibblewhite Black Diamond™ Intake...
    09261676
    SKU:
    09261676
    Availability:
    Ships Same Business Day
    Weight:
    0.17 LBS
    APPLICATION:
    INTAKE
    LENGTH IMPERIAL:
    3.830'
    MATERIAL:
    CAST IRON
    PRODUCT NAME:
    VALVE
    STEM DIAMETER IMPERIAL:
    0.3105'
    UNITS:
    EACH
    HEAD DIAMETER METRIC:
    42.16 MM
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    TULIP ANGLE:
    1,5' R
    TULIP ANGLE IMPERIAL:
    1.5° R
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Subtotal:
  • On Sale
    KIBBLEWHITE Exhaust Valve 70-4230

    KIBBLEWHITE Exhaust Valve 70-4230

    KIBBLEWHITE

    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Exhaust valves endure extreme temperatures and constant cycling—factory units often become a reliability weak point in high-performance engines. The Kibblewhite 70-4230 Black Diamond™ valve...
    09261677
    SKU:
    09261677
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    APPLICATION:
    EXHAUST
    HEAD DIAMETER METRIC:
    36.58 MM
    STEM DIAMETER IMPERIAL:
    0.3100'
    TULIP ANGLE:
    24°
    UNITS:
    EACH
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BLACK DIAMONDâ„¢
    PRODUCT NAME:
    VALVE
    LENGTH IMPERIAL:
    3.780'
    RIDING STYLE:
    STREET
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Subtotal:
  • On Sale
    KIBBLEWHITE Exhaust Valve 70-4231

    KIBBLEWHITE Exhaust Valve 70-4231

    KIBBLEWHITE

    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Exhaust valves endure extreme heat cycles and abrasive combustion byproducts—factory valves often become a bottleneck for flow and reliability. The KIBBLEWHITE Black Diamond™ Exhaust Valve (70-4231)...
    09261678
    SKU:
    09261678
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    HEAD DIAMETER METRIC:
    38.10 MM
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    UNITS:
    EACH
    MODEL:
    BLACK DIAMONDâ„¢
    RIDING STYLE:
    STREET
    STEM DIAMETER IMPERIAL:
    0.3100'
    APPLICATION:
    EXHAUST
    LENGTH IMPERIAL:
    3.760'
    TULIP ANGLE:
    24°
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.55
    Now: $33.80
    Was: $37.55
    Subtotal:
  • JAMES GASKET Derby Cover O-Ring 54122-14-VIC

    JAMES GASKET Derby Cover O-Ring 54122-14-VIC

    JAMES GASKET

    $7.90
    A quality derby cover O-ring is essential for maintaining a reliable seal on your engine's primary cover, preventing oil seepage that can compromise performance and create maintenance headaches...
    09344644
    SKU:
    09344644
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    APPLICATION:
    DERBY COVER
    MATERIAL:
    VITON
    PRODUCT NAME:
    O-RING
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    $7.90
    Qty in Cart: 0
    Quantity:
    Price:
    $7.90
    Subtotal:
  • JAMES GASKET Cam Chain and Primary Gasket - Victory 58119-14-KF

    JAMES GASKET Cam Chain and Primary Gasket - Victory 58119-14-KF

    JAMES GASKET

    $56.95
    A properly sealed cam chain and primary case is fundamental to engine longevity and reliability. Factory gaskets deteriorate over time, leading to oil leaks that compromise engine cleanliness and...
    09344610
    SKU:
    09344610
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    UNITS:
    KIT
    PRODUCT NAME:
    GASKET KIT
    RIDING STYLE:
    STREET
    TYPE:
    CHAIN INSPECTION COVER
    $56.95
    Qty in Cart: 0
    Quantity:
    Price:
    $56.95
    Subtotal:
  • JE PISTONS Piston Kit 125473

    JE PISTONS Piston Kit 125473

    JE PISTONS

    $924.99
    If you're building a high-output engine for competition or extreme duty, piston selection directly impacts reliability and performance. JE Pistons' 2618-T6 forged aluminum construction delivers the...
    09105755
    SKU:
    09105755
    Availability:
    Ships Same Business Day
    Weight:
    3.30 LBS
    RIDING STYLE:
    STREET
    BORE SIZE METRIC:
    72.00 MM
    PRODUCT NAME:
    PISTON KIT
    DISPLACEMENT:
    1075 CC
    COMPRESSION RATIO IMPERIAL:
    10.25:1
    PISTON HEAD SHAPE:
    DOMED
    UNITS:
    KIT
    WALL THICKNESS IMPERIAL:
    0.120'
    $924.99
    Qty in Cart: 0
    Quantity:
    Price:
    $924.99
    Subtotal:
  • JE PISTONS Piston Kit 136633

    JE PISTONS Piston Kit 136633

    JE PISTONS

    $283.99
    Whether you're running a professional race program or pushing your engine to the limit on the dyno, piston quality directly impacts reliability and peak performance. JE's 2618-T6 forged aluminum...
    09105759
    SKU:
    09105759
    Availability:
    Ships Same Business Day
    Weight:
    1.35 LBS
    BORE SIZE METRIC:
    100.00 MM
    PRODUCT NAME:
    PISTON KIT
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PISTON HEAD SHAPE:
    FLAT TOP
    RIDING STYLE:
    STREET
    WALL THICKNESS IMPERIAL:
    0.150'
    UNITS:
    KIT
    DISPLACEMENT:
    650 CC
    $283.99
    Qty in Cart: 0
    Quantity:
    Price:
    $283.99
    Subtotal:
  • JE PISTONS Piston Kit 138979

    JE PISTONS Piston Kit 138979

    JE PISTONS

    $939.99
    When you're pushing your engine to its limits, your pistons need to withstand extreme pressures and temperatures without compromise. JE Pistons' 138979 kit is engineered specifically for professional...
    09105761
    SKU:
    09105761
    Availability:
    Ships Same Business Day
    Weight:
    3.00 LBS
    COMPRESSION RATIO IMPERIAL:
    12.0:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    WALL THICKNESS IMPERIAL:
    0.110'
    BORE SIZE METRIC:
    72.00 MM
    DISPLACEMENT:
    945 CC
    PISTON HEAD SHAPE:
    DOMED
    UNITS:
    KIT
    $939.99
    Qty in Cart: 0
    Quantity:
    Price:
    $939.99
    Subtotal:
  • On Sale
    JE PISTONS Piston Kit 149299

    JE PISTONS Piston Kit 149299

    JE PISTONS

    MSRP: $867.96
    Now: $555.00
    Was: $867.96
    If you're building a high-performance engine destined for the track or strip, your piston selection directly impacts power delivery, reliability, and longevity under extreme conditions. JE Pistons'...
    09105765
    SKU:
    09105765
    Availability:
    Ships Same Business Day
    Weight:
    2.90 LBS
    PISTON HEAD SHAPE:
    DOMED
    UNITS:
    KIT
    WALL THICKNESS IMPERIAL:
    0.100'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    COMPRESSION RATIO IMPERIAL:
    13.0:1
    DISPLACEMENT:
    770 CC
    BORE SIZE METRIC:
    74.00 MM
    MSRP: $867.96
    Now: $555.00
    Was: $867.96
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $867.96
    Now: $555.00
    Was: $867.96
    Subtotal:
  • On Sale
    JE PISTONS Piston Kit 153766

    JE PISTONS Piston Kit 153766

    JE PISTONS

    MSRP: $954.71
    Now: $611.00
    Was: $954.71
    JE Pistons are engineered for competitors who demand reliability under extreme cylinder pressures and thermal stress. Whether you're running forced induction, nitrous, or naturally aspirated...
    09105767
    SKU:
    09105767
    Availability:
    Ships Same Business Day
    Weight:
    3.50 LBS
    UNITS:
    KIT
    WALL THICKNESS IMPERIAL:
    0.120'
    BORE SIZE METRIC:
    81.00 MM
    PISTON HEAD SHAPE:
    DOMED
    COMPRESSION RATIO IMPERIAL:
    11.5:1
    DISPLACEMENT:
    1195 CC
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    MSRP: $954.71
    Now: $611.00
    Was: $954.71
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $954.71
    Now: $611.00
    Was: $954.71
    Subtotal:
  • JE PISTONS Piston Kit 157598

    JE PISTONS Piston Kit 157598

    JE PISTONS

    $519.99
    If you're building an engine for competition or extreme street duty, piston quality directly impacts reliability, power output, and longevity. JE Pistons 157598 kits are engineered from premium...
    09105769
    SKU:
    09105769
    Availability:
    Ships Same Business Day
    Weight:
    2.95 LBS
    BORE SIZE METRIC:
    94.00 MM
    DISPLACEMENT:
    944 CC
    WALL THICKNESS IMPERIAL:
    0.140'
    PISTON HEAD SHAPE:
    DOMED
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    11.5:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    Qty in Cart: 0
    Quantity:
    Price:
    $519.99
    Subtotal:
  • JE PISTONS Piston Kit 167679

    JE PISTONS Piston Kit 167679

    JE PISTONS

    $1,034.99
    If you're building an engine for serious track duty, piston quality directly impacts reliability, power delivery, and longevity under extreme cylinder pressures. JE Pistons' 167679 kit combines...
    09105770
    SKU:
    09105770
    Availability:
    Ships Same Business Day
    Weight:
    3.60 LBS
    COMPRESSION RATIO IMPERIAL:
    12.3:1
    PISTON HEAD SHAPE:
    FLAT TOP
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    WALL THICKNESS IMPERIAL:
    0.110'
    BORE SIZE METRIC:
    81.00 MM
    DISPLACEMENT:
    1299 CC
    PRODUCT NAME:
    PISTON KIT
    $1,034.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,034.99
    Subtotal:
  • JE PISTONS Piston Kit 172945 JE PISTONS Piston Kit 172945

    JE PISTONS Piston Kit 172945

    JE PISTONS

    $1,034.99
    If you're building a high-performance engine for competition or extreme duty, piston quality directly impacts reliability, power delivery, and longevity under sustained load. JE Pistons have earned...
    09105771
    SKU:
    09105771
    Availability:
    Ships Same Business Day
    Weight:
    3.90 LBS
    DISPLACEMENT:
    1397 CC
    PISTON HEAD SHAPE:
    FLAT TOP
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE SIZE METRIC:
    84.00 MM
    COMPRESSION RATIO IMPERIAL:
    12.8:1
    UNITS:
    KIT
    WALL THICKNESS IMPERIAL:
    0.110'
    $1,034.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,034.99
    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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