Dirt Bike Engine Valves and Parts

Dirt Bike Engine Valves and Parts

Dirt Bike Engine Valves and Parts

J J Motorsports is a leading supplier of dirt bike engine parts and accessories. We carry a wide selection of 4 stroke engine valves from top brands like Wiseco and Vertex Racing. Whether you're looking for replacement valves or performance parts, we have what you need to keep your dirt bike running at peak performance. Our team is passionate about dirt bikes and we're here to help you get the most out of your ride. Contact us today with any questions or for help finding the right parts for your bike.

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  • Price
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  • PROX Valve Shim - 5 pack 29.948280

    PROX Valve Shim - 5 pack 29.948280

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948280Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260974
    SKU:
    09260974
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    2.80 MM
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    STREET
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948285

    PROX Valve Shim - 5 pack 29.948285

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948285Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260975
    SKU:
    09260975
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    2.85 MM
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948290

    PROX Valve Shim - 5 pack 29.948290

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948290Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260976
    SKU:
    09260976
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    RIDING STYLE:
    OFF-ROAD
    VALVE SHIM THICKNESS METRIC:
    2.90 MM
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948300

    PROX Valve Shim - 5 pack 29.948300

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948300Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260978
    SKU:
    09260978
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    VALVE SHIM THICKNESS METRIC:
    3.00 MM
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948310

    PROX Valve Shim - 5 pack 29.948310

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948310Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260980
    SKU:
    09260980
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    3.10 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948315

    PROX Valve Shim - 5 pack 29.948315

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948315Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260981
    SKU:
    09260981
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    5 PACK
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    3.15 MM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948320

    PROX Valve Shim - 5 pack 29.948320

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948320Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260982
    SKU:
    09260982
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    VALVE SHIM THICKNESS METRIC:
    3.20 MM
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948325

    PROX Valve Shim - 5 pack 29.948325

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948325Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260983
    SKU:
    09260983
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    5 PACK
    RIDING STYLE:
    STREET
    RIDING STYLE:
    WATERCRAFT
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ATV
    TYPE:
    VALVE
    VALVE SHIM THICKNESS METRIC:
    3.25 MM
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim - 5 pack 29.948350

    PROX Valve Shim - 5 pack 29.948350

    PROX

    $9.95
    PROX Valve Shim 5 pack 29.948350Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size
    09260988
    SKU:
    09260988
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    9.48 MM
    RIDING STYLE:
    STREET
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    VALVE SHIM THICKNESS METRIC:
    3.50 MM
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    UNITS:
    5 PACK
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • PROX Valve Shim Kit 29.VSA1000

    PROX Valve Shim Kit 29.VSA1000

    PROX

    $90.30
    PROX Valve Shim Kit 29.VSA1000Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09260989
    SKU:
    09260989
    Availability:
    Ships Same Business Day
    Weight:
    0.67 LBS
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    TYPE:
    VALVE
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    ATV
    VALVE SHIM THICKNESS METRIC:
    1.85 MM - 3.20 MM
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    UNITS:
    KIT
    $90.30
    Qty in Cart: 0
    Quantity:
    Price:
    $90.30
    Subtotal:
  • PROX Valveshim - 10.00 x 2.15 - 5 pack 29.100215

    PROX Valveshim - 10.00 x 2.15 - 5 pack 29.100215

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.15 5 pack 29.100215Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09260996
    SKU:
    09260996
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    2.15 MM
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    5 PACK
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.20 - 5 pack 29.100220

    PROX Valveshim - 10.00 x 2.20 - 5 pack 29.100220

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.20 5 pack 29.100220Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09260997
    SKU:
    09260997
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    VALVE SHIM THICKNESS METRIC:
    2.20 MM
    PRODUCT NAME:
    SHIM KIT
    UNITS:
    5 PACK
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.25 - 5 pack 29.100225

    PROX Valveshim - 10.00 x 2.25 - 5 pack 29.100225

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.25 5 pack 29.100225Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09260998
    SKU:
    09260998
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    RIDING STYLE:
    STREET
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.25 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.30 - 5 pack 29.100230

    PROX Valveshim - 10.00 x 2.30 - 5 pack 29.100230

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.30 5 pack 29.100230Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09260999
    SKU:
    09260999
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    PRODUCT NAME:
    SHIM KIT
    TYPE:
    VALVE
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.30 MM
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    RIDING STYLE:
    STREET
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.35 - 5 pack 29.100235

    PROX Valveshim - 10.00 x 2.35 - 5 pack 29.100235

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.35 5 pack 29.100235Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09261000
    SKU:
    09261000
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    RIDING STYLE:
    OFF-ROAD
    VALVE SHIM THICKNESS METRIC:
    2.35 MM
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    TYPE:
    VALVE
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.40 - 5 pack 29.100240

    PROX Valveshim - 10.00 x 2.40 - 5 pack 29.100240

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.40 5 pack 29.100240Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09261001
    SKU:
    09261001
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.40 MM
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    VALVE
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.45 - 5 pack 29.100245

    PROX Valveshim - 10.00 x 2.45 - 5 pack 29.100245

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.45 5 pack 29.100245Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09261002
    SKU:
    09261002
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    OFF-ROAD
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    TYPE:
    VALVE
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.45 MM
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.50 - 5 pack 29.100250

    PROX Valveshim - 10.00 x 2.50 - 5 pack 29.100250

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.50 5 pack 29.100250Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09261003
    SKU:
    09261003
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    TYPE:
    VALVE
    RIDING STYLE:
    OFF-ROAD
    PRODUCT NAME:
    SHIM KIT
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.50 MM
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Valveshim - 10.00 x 2.55 - 5 pack 29.100255

    PROX Valveshim - 10.00 x 2.55 - 5 pack 29.100255

    PROX

    $10.31
    PROX Valveshim 10.00 x 2.55 5 pack 29.100255Made using a specific heat-treatment to ensure hardness for maximum durability and less wear, Precision machined to match exact size, Inexpensive and easy replacement for expensive OEM shims
    09261004
    SKU:
    09261004
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    SHIM KIT
    TYPE:
    VALVE
    UNITS:
    5 PACK
    VALVE SHIM THICKNESS METRIC:
    2.55 MM
    OUTSIDE DIAMETER METRIC:
    10.00 MM
    $10.31
    Qty in Cart: 0
    Quantity:
    Price:
    $10.31
    Subtotal:
  • PROX Exhaust Valve 28.1356-1

    PROX Exhaust Valve 28.1356-1

    PROX

    $29.95
    PROX Exhaust Valve 28.1356-1Manufactured to the highest precision and quality, Constructed to meet OEM specifications, Available in standard sizes only
    09260673
    SKU:
    09260673
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    MATERIAL:
    STEEL
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    PRODUCT NAME:
    VALVE
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Total: items /

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