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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.

  • Product
  • Qty in Cart
  • 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°
    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:
  • 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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