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ATV/UTV Engine

ATV/UTV Engine

ATV/UTV Engine

Maximize your engine life with top-quality ATV/UTV engine parts. Whether you’re upgrading pistons, cylinders, or gaskets, our durable components provide exceptional performance. Maintain peak engine power with our trusted engine parts.

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  • Quantity
  • Price
  • Subtotal
  • MOOSE RACING Motor Gasket Kit with Seal - YFZ350 811812

    MOOSE RACING Motor Gasket Kit with Seal - YFZ350 811812

    MOOSE RACING

    $114.50
    MOOSE RACING Motor Gasket Kit with Seal YFZ350 811812Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil...
    M811812
    SKU:
    M811812
    Availability:
    Ships Same Business Day
    Weight:
    0.42 LBS
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    TYPE:
    COMPLETE
    UNITS:
    KIT
    RIDING STYLE:
    ATV
    $114.50
    Qty in Cart: 0
    Quantity:
    Price:
    $114.50
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - YFM350 811813

    MOOSE RACING Motor Gasket Kit with Seal - YFM350 811813

    MOOSE RACING

    $118.01
    MOOSE RACING Motor Gasket Kit with Seal YFM350 811813Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil...
    M811813
    SKU:
    M811813
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    RIDING STYLE:
    ATV
    TYPE:
    ENGINE
    PRODUCT NAME:
    GASKET
    TYPE:
    COMPLETE
    UNITS:
    KIT
    $118.01
    Qty in Cart: 0
    Quantity:
    Price:
    $118.01
    Subtotal:
  • MOOSE RACING Motor Gasket Kit with Seal - ATC/TRX250 811815

    MOOSE RACING Motor Gasket Kit with Seal - ATC/TRX250 811815

    MOOSE RACING

    $85.43
    MOOSE RACING Motor Gasket Kit with Seal ATC/TRX250 811815Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil...
    M811815
    SKU:
    M811815
    Availability:
    Ships Same Business Day
    Weight:
    0.22 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    ATV
    TYPE:
    COMPLETE
    UNITS:
    KIT
    TYPE:
    ENGINE
    $85.43
    Qty in Cart: 0
    Quantity:
    Price:
    $85.43
    Subtotal:
  • On Sale
    LA SLEEVE Sleeve and Piston Kit for Kawasaki KFX450R 2008-2014 LAS-5675K

    LA SLEEVE Sleeve and Piston Kit for Kawasaki KFX450R 2008-2014 LAS-5675K

    LA SLEEVE

    MSRP: $408.95
    Now: $262.00
    Was: $408.95
    LA SLEEVE Sleeve and Piston Kit for Kawasaki LAS-5675K Upgrade your Kawasaki's performance with the LA SLEEVE Sleeve and Piston Kit, designed for optimal power and efficiency. This all-in-one top-end rebuild kit features advanced materials and precision...
    09310361
    SKU:
    09310361
    Availability:
    Ships Same Business Day
    Weight:
    3.05 LBS
    MATERIAL:
    IRON
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    ATV
    TYPE:
    CYLINDER
    UNITS:
    KIT
    MSRP: $408.95
    Now: $262.00
    Was: $408.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $408.95
    Now: $262.00
    Was: $408.95
    Subtotal:
  • LA Sleeve Cylinder Rebuild Kit for 1994-1999 Polaris Xplorer 300 LAS-5273K

    LA Sleeve Cylinder Rebuild Kit for 1994-1999 Polaris Xplorer 300 LAS-5273K

    LA SLEEVE

    $395.95
    LA SLEEVE Sleeve and Piston Kit Polaris LAS-5273K Elevate your Polaris performance with the LA SLEEVE Sleeve and Piston Kit. This comprehensive top-end rebuild kit is engineered to enhance engine efficiency, delivering improved compression, torque, and...
    09310363
    SKU:
    09310363
    Availability:
    Ships Same Business Day
    Weight:
    2.65 LBS
    MATERIAL:
    IRON
    RIDING STYLE:
    ATV
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    CYLINDER
    UNITS:
    KIT
    $395.95
    Qty in Cart: 0
    Quantity:
    Price:
    $395.95
    Subtotal:
  • LA Sleeve Sleeve and Piston Kit Yamaha YFM350 Grizzly 2007-2010 LAS-5024K

    LA Sleeve Sleeve and Piston Kit Yamaha YFM350 Grizzly 2007-2010 LAS-5024K

    LA SLEEVE

    $302.95
    LA SLEEVE Sleeve and Piston Kit Yamaha LAS-5024K Elevate your Yamaha's performance with the LA SLEEVE Sleeve and Piston Kit, designed for optimal power and efficiency. This comprehensive top-end rebuild kit combines advanced engineering with high-quality...
    09310366
    SKU:
    09310366
    Availability:
    Ships Same Business Day
    Weight:
    3.68 LBS
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    CYLINDER
    UNITS:
    KIT
    MATERIAL:
    IRON
    RIDING STYLE:
    ATV
    $302.95
    Qty in Cart: 0
    Quantity:
    Price:
    $302.95
    Subtotal:
  • L.A. Sleeve Cylinder Sleeve for 1985-1986 Honda ATC250R and 1986 Honda TRX250R H845

    L.A. Sleeve Cylinder Sleeve for 1985-1986 Honda ATC250R and 1986 Honda TRX250R H845

    LA SLEEVE

    $165.95
    LA SLEEVE Cylinder Sleeve H845 Revitalize your engine with the LA SLEEVE Cylinder Sleeve H845, designed to provide a durable and reliable solution for worn-out cylinders. Engineered with precision, this high-quality replacement sleeve ensures optimal...
    H845
    SKU:
    H845
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    CYLINDER SLEEVE
    BORE SIZE METRIC:
    66.00 MM
    RIDING STYLE:
    ATV
    TYPE:
    CI
    UNITS:
    EACH
    CYLINDER BORE COATING:
    CHROME-MOLY ALLOY
    Qty in Cart: 0
    Quantity:
    Price:
    $165.95
    Subtotal:
  • KIBBLEWHITE Valve Spring Kit 30-30920

    KIBBLEWHITE Valve Spring Kit 30-30920

    KIBBLEWHITE

    $207.81
    KIBBLEWHITE Valve Spring Kit 30-30920Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and...
    09260411
    SKU:
    09260411
    Availability:
    Ships Same Business Day
    Weight:
    0.43 LBS
    MATERIAL:
    STEEL
    RIDING STYLE:
    ATV
    SPRING LIFT:
    0,440'
    SPRING LIFT IMPERIAL:
    0.440'
    SPRING OPEN PRESSURE:
    INTAKE 147 LB, EXHAUST 203 LB
    UNITS:
    KIT
    APPLICATION:
    EXHAUST
    SPRING SEAT PRESSURE:
    INTAKE 40 LB, EXHAUST 70 LB
    TYPE:
    VALVE
    APPLICATION:
    INTAKE
    MATERIAL:
    TITANIUM
    PRODUCT NAME:
    SPRING KIT
    $207.81
    Qty in Cart: 0
    Quantity:
    Price:
    $207.81
    Subtotal:
  • KIBBLEWHITE Exhaust Valve Guide 30-30940

    KIBBLEWHITE Exhaust Valve Guide 30-30940

    KIBBLEWHITE

    $15.92
    KIBBLEWHITE Exhaust Valve Guide 30-30940All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09260414
    SKU:
    09260414
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    INSIDE DIAMETER IMPERIAL:
    0.1955'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    ATV
    SIZE IMPERIAL:
    STANDARD
    OUTSIDE DIAMETER IMPERIAL:
    0.4360'
    APPLICATION:
    EXHAUST
    MATERIAL:
    AMPCO-45
    UNITS:
    EACH
    $15.92
    Qty in Cart: 0
    Quantity:
    Price:
    $15.92
    Subtotal:
  • KIBBLEWHITE Intake Valve - TRX450R - 37mm 30-30951

    KIBBLEWHITE Intake Valve - TRX450R - 37mm 30-30951

    KIBBLEWHITE

    $31.01
    KIBBLEWHITE Intake Valve TRX450R 37mm 30-30951Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear,...
    09260417
    SKU:
    09260417
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    LENGTH IMPERIAL:
    3.325'
    STEM DIAMETER IMPERIAL:
    0.2158'
    MODEL:
    BLACK DIAMONDâ„¢
    PRODUCT NAME:
    VALVE
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    37.00 MM
    MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    ATV
    TULIP ANGLE:
    20°
    UNITS:
    EACH
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    $31.01
    Subtotal:
  • KIBBLEWHITE Intake Valve 30-30088

    KIBBLEWHITE Intake Valve 30-30088

    KIBBLEWHITE

    $54.10
    KIBBLEWHITE Intake Valve 30-30088Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear, Made in the U...
    KW3030088
    SKU:
    KW3030088
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MODEL:
    BLACK DIAMONDâ„¢
    STEM DIAMETER IMPERIAL:
    0.2155'
    TULIP ANGLE:
    23°
    UNITS:
    EACH
    HEAD DIAMETER METRIC:
    25.50 MM
    LENGTH IMPERIAL:
    3.680'
    MATERIAL:
    STAINLESS STEEL
    RIDING STYLE:
    ATV
    APPLICATION:
    INTAKE
    PRODUCT NAME:
    VALVE
    $54.10
    Qty in Cart: 0
    Quantity:
    Price:
    $54.10
    Subtotal:
  • KIBBLEWHITE Valve Guide 82-82030

    KIBBLEWHITE Valve Guide 82-82030

    KIBBLEWHITE

    $26.43
    KIBBLEWHITE Valve Guide 82-82030All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09260175
    SKU:
    09260175
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    VALVE GUIDE
    APPLICATION:
    EXHAUST
    OUTSIDE DIAMETER IMPERIAL:
    0.4160'
    SIZE IMPERIAL:
    STANDARD
    INSIDE DIAMETER IMPERIAL:
    0.2345'
    MATERIAL:
    C630 BRONZE
    APPLICATION:
    INTAKE
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    $26.43
    Qty in Cart: 0
    Quantity:
    Price:
    $26.43
    Subtotal:
  • KIBBLEWHITE Intake Valve - Polaris 500 - Standard 82-82052

    KIBBLEWHITE Intake Valve - Polaris 500 - Standard 82-82052

    KIBBLEWHITE

    $37.55
    KIBBLEWHITE Intake Valve Polaris 500 Standard 82-82052Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion...
    09260179
    SKU:
    09260179
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    LENGTH IMPERIAL:
    4.030'
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    37.00 MM
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    20°
    MODEL:
    BLACK DIAMONDâ„¢
    STEM DIAMETER IMPERIAL:
    0.2345'
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    $37.55
    Subtotal:
  • KIBBLEWHITE Valve Spring Kit 30-30720

    KIBBLEWHITE Valve Spring Kit 30-30720

    KIBBLEWHITE

    $207.81
    KIBBLEWHITE Valve Spring Kit 30-30720Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and...
    09260138
    SKU:
    09260138
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    APPLICATION:
    EXHAUST
    SPRING LIFT:
    0,440'
    SPRING LIFT IMPERIAL:
    0.440'
    SPRING SEAT PRESSURE:
    INTAKE 40 LB, EXHAUST 70 LB
    MATERIAL:
    TITANIUM
    PRODUCT NAME:
    SPRING KIT
    UNITS:
    KIT
    APPLICATION:
    INTAKE
    MATERIAL:
    STEEL
    RIDING STYLE:
    ATV
    SPRING OPEN PRESSURE:
    INTAKE 147 LB, EXHAUST 203 LB
    TYPE:
    VALVE
    $207.81
    Qty in Cart: 0
    Quantity:
    Price:
    $207.81
    Subtotal:
  • KIBBLEWHITE Intake Valve - TRX450R - 36mm 30-30750

    KIBBLEWHITE Intake Valve - TRX450R - 36mm 30-30750

    KIBBLEWHITE

    $31.01
    KIBBLEWHITE Intake Valve TRX450R 36mm 30-30750Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear,...
    09260139
    SKU:
    09260139
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    LENGTH IMPERIAL:
    3.315'
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BLACK DIAMONDâ„¢
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    20°
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    36.00 MM
    RIDING STYLE:
    ATV
    STEM DIAMETER IMPERIAL:
    0.2158'
    UNITS:
    EACH
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    $31.01
    Subtotal:
  • KIBBLEWHITE Intake Valve - TRX450R - 37mm 30-30751

    KIBBLEWHITE Intake Valve - TRX450R - 37mm 30-30751

    KIBBLEWHITE

    $31.01
    KIBBLEWHITE Intake Valve TRX450R 37mm 30-30751Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear,...
    09260140
    SKU:
    09260140
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MODEL:
    BLACK DIAMONDâ„¢
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    37.00 MM
    RIDING STYLE:
    ATV
    STEM DIAMETER IMPERIAL:
    0.2158'
    UNITS:
    EACH
    LENGTH IMPERIAL:
    3.325'
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    20°
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    $31.01
    Subtotal:
  • KIBBLEWHITE Exhaust Valve - TRX450R - 30mm 30-30753

    KIBBLEWHITE Exhaust Valve - TRX450R - 30mm 30-30753

    KIBBLEWHITE

    $31.01
    KIBBLEWHITE Exhaust Valve TRX450R 30mm 30-30753Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear,...
    09260141
    SKU:
    09260141
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    HEAD DIAMETER METRIC:
    30.00 MM
    LENGTH IMPERIAL:
    3.315'
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    RIDING STYLE:
    ATV
    TULIP ANGLE:
    20°
    UNITS:
    EACH
    STEM DIAMETER IMPERIAL:
    0.2151'
    APPLICATION:
    EXHAUST
    MODEL:
    BLACK DIAMONDâ„¢
    $31.01
    Qty in Cart: 0
    Quantity:
    Price:
    $31.01
    Subtotal:
  • KIBBLEWHITE Exhaust Valve - TRX450R - 31mm 30-30754

    KIBBLEWHITE Exhaust Valve - TRX450R - 31mm 30-30754

    KIBBLEWHITE

    $31.01
    KIBBLEWHITE Exhaust Valve TRX450R 31mm 30-30754Black Diamondâ„¢ valves are CNC machined from one-piece forgings of EV8 Stainless Steel, Black Diamondâ„¢ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear,...
    09260142
    SKU:
    09260142
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MATERIAL:
    STAINLESS STEEL
    PRODUCT NAME:
    VALVE
    RIDING STYLE:
    ATV
    TULIP ANGLE:
    20°
    UNITS:
    EACH
    APPLICATION:
    EXHAUST
    MODEL:
    BLACK DIAMONDâ„¢
    LENGTH IMPERIAL:
    3.325'
    STEM DIAMETER IMPERIAL:
    0.2151'
    HEAD DIAMETER METRIC:
    31.00 MM
    Qty in Cart: 0
    Quantity:
    Price:
    $31.01
    Subtotal:
  • KIBBLEWHITE Valve Guide 60-60290

    KIBBLEWHITE Valve Guide 60-60290

    KIBBLEWHITE

    $15.92
    KIBBLEWHITE Valve Guide 60-60290All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09260239
    SKU:
    09260239
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    OUTSIDE DIAMETER IMPERIAL:
    0.4170'
    PRODUCT NAME:
    VALVE GUIDE
    RIDING STYLE:
    ATV
    SIZE IMPERIAL:
    STANDARD
    INSIDE DIAMETER IMPERIAL:
    0.2155'
    MATERIAL:
    C630 BRONZE
    APPLICATION:
    INTAKE
    UNITS:
    EACH
    $15.92
    Qty in Cart: 0
    Quantity:
    Price:
    $15.92
    Subtotal:
  • KIBBLEWHITE Valve Guide 60-60300

    KIBBLEWHITE Valve Guide 60-60300

    KIBBLEWHITE

    $15.92
    KIBBLEWHITE Valve Guide 60-60300All valve guides are made of Ampco-45, a high-performance compound with 80% copper content to provide great heat conductivity and 5% nickel content for wear resistance, Made in the U.S.A.
    09260240
    SKU:
    09260240
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    APPLICATION:
    EXHAUST
    UNITS:
    EACH
    INSIDE DIAMETER IMPERIAL:
    0.2155'
    MATERIAL:
    C630 BRONZE
    OUTSIDE DIAMETER IMPERIAL:
    0.4170'
    RIDING STYLE:
    ATV
    SIZE IMPERIAL:
    STANDARD
    PRODUCT NAME:
    VALVE GUIDE
    Qty in Cart: 0
    Quantity:
    Price:
    $15.92
    Subtotal:
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