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ATV/UTV Engine

ATV/UTV Engine

ATV/UTV Engine

ATV/UTV Engine Parts at JJ Motorsports

Maximize your ATV or UTV's engine life with top-quality components from JJ Motorsports. Our selection includes gasket kits, connecting rods, water pump rebuild kits, and timing plugs designed for reliable sealing, strength, and easy installation in demanding off-road conditions. Compatible with Polaris, Can-Am, Honda, and more, these parts ensure peak power, reduced wear, and efficient operation for trail riding or utility work.

Shop trusted brands like Moose Racing for rebuild kits and Winderosa for gaskets. Explore related categories such as ATV/UTV air and fuel for intake upgrades or ATV/UTV drivetrain for transmission enhancements.

Top ATV/UTV 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
  • MOOSE RACING Crankcase Bearing and Seal Kit 24-1005

    MOOSE RACING Crankcase Bearing and Seal Kit 24-1005

    MOOSE RACING

    $86.95
    A worn or damaged crankshaft bearing can compromise engine reliability and performance, leading to increased friction, heat, and potential catastrophic failure. The MOOSE RACING Crankcase Bearing and...
    A241005
    SKU:
    A241005
    Availability:
    Ships Same Business Day
    Weight:
    1.40 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    BEARING KIT
    RIDING STYLE:
    ATV
    TYPE:
    CRANK
    Qty in Cart: 0
    Quantity:
    Price:
    $86.95
    Subtotal:
  • MOOSE RACING Crank Bearing with Seals - YFS200 24-1043

    MOOSE RACING Crank Bearing with Seals - YFS200 24-1043

    MOOSE RACING

    $102.95
    A worn or damaged crankshaft bearing directly compromises engine reliability and performance—especially critical on 2-stroke engines where crankcase integrity is everything. The MOOSE RACING Crank...
    A241043
    SKU:
    A241043
    Availability:
    Ships Same Business Day
    Weight:
    0.94 LBS
    APPLICATION:
    CRANKSHAFT
    TYPE:
    BALL
    RIDING STYLE:
    ATV
    PRODUCT NAME:
    BEARING
    UNITS:
    KIT
    $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    $102.95
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - Honda 810866

    MOOSE RACING Top End Gasket Kit - Honda 810866

    MOOSE RACING

    $21.90
    A top-end rebuild demands precision and reliability—cheap gasket sets fail under load, costing you downtime and frustration. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals and gaskets...
    09346503
    SKU:
    09346503
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    TOP END
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    $21.90
    Qty in Cart: 0
    Quantity:
    Price:
    $21.90
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - Polaris 8100006

    MOOSE RACING Top End Gasket Kit - Polaris 8100006

    MOOSE RACING

    $164.97
    A top-end rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Top End Gasket Kit delivers OEM-equivalent reliability at a fraction of the cost, with...
    09346510
    SKU:
    09346510
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    PRODUCT NAME:
    GASKET
    TYPE:
    TOP END
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $164.97
    Qty in Cart: 0
    Quantity:
    Price:
    $164.97
    Subtotal:
  • MOOSE RACING Cylinder - Standard - RZR XP 1000 MSE60003

    MOOSE RACING Cylinder - Standard - RZR XP 1000 MSE60003

    MOOSE RACING

    $622.95
    A worn or damaged cylinder compromises your RZR XP 1000's compression, throttle response, and overall reliability—especially critical if you're pushing your machine hard in competition or demanding...
    09310631
    SKU:
    09310631
    Availability:
    Ships Same Business Day
    Weight:
    7.07 LBS
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    UTV
    CYLINDER BORE COATING:
    NICKEL-SILICON CARBIDE
    PRODUCT NAME:
    CYLINDER
    UNITS:
    EACH
    MATERIAL:
    CAST
    $622.95
    Qty in Cart: 0
    Quantity:
    Price:
    $622.95
    Subtotal:
  • MOOSE RACING Cylinder - Standard - Polaris MSE60006

    MOOSE RACING Cylinder - Standard - Polaris MSE60006

    MOOSE RACING

    $605.95
    A worn or damaged cylinder compromises both performance and reliability—leaving you stranded or forcing costly downtime. The MOOSE RACING Cylinder delivers OEM-spec precision and durability without...
    09310964
    SKU:
    09310964
    Availability:
    Ships Same Business Day
    Weight:
    7.30 LBS
    COLOR/FINISH:
    GRAY
    CYLINDER DIAMETER METRIC:
    93.00 MM
    BORE SIZE METRIC:
    STANDARD
    CYLINDER BORE COATING:
    NICKEL-SILICON CARBIDE
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    CYLINDER DIAMETER:
    93,00 MM
    ENGINE TYPE:
    4-CYCLE
    MATERIAL:
    CAST
    PRODUCT NAME:
    CYLINDER
    DISPLACEMENT:
    1000 CC
    RIDING STYLE:
    UTV
    $605.95
    Qty in Cart: 0
    Quantity:
    Price:
    $605.95
    Subtotal:
  • MOOSE RACING Cylinder - Standard - Polaris MSE60004

    MOOSE RACING Cylinder - Standard - Polaris MSE60004

    MOOSE RACING

    $622.95
    A worn or damaged cylinder directly compromises your engine's compression, power delivery, and overall reliability. This MOOSE RACING replacement cylinder restores OEM performance specifications...
    09310963
    SKU:
    09310963
    Availability:
    Ships Same Business Day
    Weight:
    7.30 LBS
    COLOR/FINISH:
    GRAY
    CYLINDER BORE COATING:
    NICKEL-SILICON CARBIDE
    CYLINDER DIAMETER METRIC:
    93.00 MM
    DISPLACEMENT:
    875 CC
    RIDING STYLE:
    UTV
    CYLINDER DIAMETER:
    93,00 MM
    ENGINE TYPE:
    4-CYCLE
    MATERIAL:
    CAST
    PRODUCT NAME:
    CYLINDER
    BORE SIZE METRIC:
    STANDARD
    MATERIAL:
    ALUMINUM
    UNITS:
    EACH
    $622.95
    Qty in Cart: 0
    Quantity:
    Price:
    $622.95
    Subtotal:
  • MOOSE RACING Countershaft Sprocket Seal Kit  - Yamaha 25-4032

    MOOSE RACING Countershaft Sprocket Seal Kit - Yamaha 25-4032

    MOOSE RACING

    $23.95
    Countershaft seal failure is a common culprit behind oil leaks and premature bearing wear on Yamaha dirt bikes. This MOOSE RACING kit replaces worn seals and bushings with OEM-quality components,...
    09350425
    SKU:
    09350425
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    SEAL KIT
    RIDING STYLE:
    ATV
    APPLICATION:
    COUNTERSHAFT
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $23.95
    Subtotal:
  • MOOSE RACING Magnetic Drain Plug DP111

    MOOSE RACING Magnetic Drain Plug DP111

    MOOSE RACING

    $23.95
    Metal particles inevitably accumulate in your engine oil during normal operation—especially during break-in periods or after high-mileage service. The MOOSE RACING Magnetic Drain Plug DP111 captures...
    09200042
    SKU:
    09200042
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    DIAMETER - THREAD SIZE METRIC:
    M14 X 1.50 X 35 MM
    PRODUCT NAME:
    PLUG
    UNITS:
    EACH
    TYPE:
    DRAIN
    MATERIAL:
    7075 ALUMINUM
    COLOR/FINISH:
    RED
    FEATURES:
    MAGNETIC
    RIDING STYLE:
    UTV
    Qty in Cart: 0
    Quantity:
    Price:
    $23.95
    Subtotal:
  • MOOSE RACING Magnetic Drain Plug DP113

    MOOSE RACING Magnetic Drain Plug DP113

    MOOSE RACING

    $23.95
    Engine wear is inevitable, but metal particle accumulation doesn't have to be. The MOOSE RACING Magnetic Drain Plug DP113 continuously captures ferrous debris that circulates through your oil system,...
    09200043
    SKU:
    09200043
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    PRODUCT NAME:
    PLUG
    RIDING STYLE:
    ATV
    TYPE:
    DRAIN
    DIAMETER - THREAD SIZE METRIC:
    M14 X 1.50 X 35 MM
    MATERIAL:
    7075 ALUMINUM
    COLOR/FINISH:
    RED
    UNITS:
    EACH
    FEATURES:
    MAGNETIC
    RIDING STYLE:
    UTV
    Qty in Cart: 0
    Quantity:
    Price:
    $23.95
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - Polaris 810965

    MOOSE RACING Top End Gasket Kit - Polaris 810965

    MOOSE RACING

    $57.18
    A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. The MOOSE RACING Top End Gasket Kit gives you OEM-quality components at a fraction...
    09344828
    SKU:
    09344828
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    PRODUCT NAME:
    GASKET
    UNITS:
    KIT
    RIDING STYLE:
    ATV
    TYPE:
    TOP END
    RIDING STYLE:
    UTV
    Qty in Cart: 0
    Quantity:
    Price:
    $57.18
    Subtotal:
  • MOOSE RACING Motor Seals - LT250R 822148

    MOOSE RACING Motor Seals - LT250R 822148

    MOOSE RACING

    $31.92
    Engine seals are critical wear items that prevent oil leakage and maintain pressure throughout your engine and transmission. OEM replacement seals come with premium pricing, but MOOSE Racing Motor...
    M822148
    SKU:
    M822148
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    RIDING STYLE:
    ATV
    UNITS:
    SET
    PRODUCT NAME:
    SEAL
    APPLICATION:
    ENGINE
    TYPE:
    OIL
    Qty in Cart: 0
    Quantity:
    Price:
    $31.92
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - Kawasaki 810880

    MOOSE RACING Top End Gasket Kit - Kawasaki 810880

    MOOSE RACING

    $123.32
    A top-end rebuild demands precision and reliability—this gasket kit delivers both at a fraction of OEM pricing. Whether you're replacing a worn piston or refreshing your engine after hard use, Moose...
    09340694
    SKU:
    09340694
    Availability:
    Ships Same Business Day
    Weight:
    0.21 LBS
    PRODUCT NAME:
    GASKET
    TYPE:
    TOP END
    UNITS:
    KIT
    RIDING STYLE:
    ATV
    $123.32
    Qty in Cart: 0
    Quantity:
    Price:
    $123.32
    Subtotal:
  • MOOSE RACING Complete Motor Gasket Kit - Rubicon 500 808843

    MOOSE RACING Complete Motor Gasket Kit - Rubicon 500 808843

    MOOSE RACING

    $152.48
    A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork and cost of sourcing...
    09340424
    SKU:
    09340424
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    PRODUCT NAME:
    GASKET
    TYPE:
    ENGINE
    RIDING STYLE:
    ATV
    TYPE:
    COMPLETE
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $152.48
    Subtotal:
  • MOOSE RACING Top End Gasket Kit - LT 250 R 810834

    MOOSE RACING Top End Gasket Kit - LT 250 R 810834

    MOOSE RACING

    $29.14
    When you're rebuilding a top end, precision matters. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals and gaskets at a fraction of the cost, so you can confidently complete your engine...
    M810834
    SKU:
    M810834
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    PRODUCT NAME:
    GASKET
    TYPE:
    TOP END
    UNITS:
    KIT
    RIDING STYLE:
    ATV
    $29.14
    Qty in Cart: 0
    Quantity:
    Price:
    $29.14
    Subtotal:
  • MOOSE RACING Motor Seals - KEF 300 822241

    MOOSE RACING Motor Seals - KEF 300 822241

    MOOSE RACING

    $20.92
    Engine and transmission seals are critical to maintaining oil pressure, preventing leaks, and protecting internal components from contamination. OEM replacement seals often carry premium pricing, but...
    09350379
    SKU:
    09350379
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    RIDING STYLE:
    ATV
    TYPE:
    OIL
    APPLICATION:
    ENGINE
    PRODUCT NAME:
    SEAL
    UNITS:
    SET
    $20.92
    Qty in Cart: 0
    Quantity:
    Price:
    $20.92
    Subtotal:
  • Cylinder Works Standard Bore Cylinder for Polaris General 1000 2017-2022 60006

    Cylinder Works Standard Bore Cylinder for Polaris General 1000 2017-2022 60006

    CYLINDER WORKS

    $653.95
    Stock cylinders wear down with use, losing compression and throttle response over time. The Cylinder Works Standard Bore Cylinder gives you a true OEM-equivalent replacement without the downtime and...
    09310730
    SKU:
    09310730
    Availability:
    Ships Same Business Day
    Weight:
    6.85 LBS
    UNITS:
    EACH
    CYLINDER DIAMETER METRIC:
    93.00 MM
    ENGINE TYPE:
    4-CYCLE
    CYLINDER DIAMETER:
    93,00 MM
    RIDING STYLE:
    UTV
    STYLE:
    STANDARD
    PRODUCT NAME:
    CYLINDER
    $653.95
    Qty in Cart: 0
    Quantity:
    Price:
    $653.95
    Subtotal:
  • Cylinder Works Standard Bore Cylinder Kit for Polaris General 1000 EPS 2017-2022 60006-K02

    Cylinder Works Standard Bore Cylinder Kit for Polaris General 1000 EPS 2017-2022 60006-K02

    CYLINDER WORKS

    $1,120.95
    If you're running a Polaris General 1000 EPS and noticing wear on your cylinder or seeking a reliable replacement that matches OEM performance, the Cylinder Works Standard Bore Kit delivers exactly...
    09310731
    SKU:
    09310731
    Availability:
    Ships Same Business Day
    Weight:
    10.01 LBS
    BORE SIZE METRIC:
    93.00 MM
    PRODUCT NAME:
    CYLINDER KIT
    CYLINDER DIAMETER:
    93,00 MM
    RIDING STYLE:
    UTV
    UNITS:
    KIT
    CYLINDER BORE COATING:
    NICKEL-SILICON CARBIDE
    CYLINDER DIAMETER METRIC:
    93.00 MM
    STYLE:
    STANDARD
    COMPRESSION RATIO IMPERIAL:
    11.5:1
    ENGINE TYPE:
    4-CYCLE
    $1,120.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,120.95
    Subtotal:
  • KIBBLEWHITE Intake Valve - Raptor 700 - 39mm 80-80431

    KIBBLEWHITE Intake Valve - Raptor 700 - 39mm 80-80431

    KIBBLEWHITE

    $37.55
    A stock intake valve won't cut it if you're pushing your Raptor 700 to its limits. KIBBLEWHITE's Black Diamondâ„¢ valves are engineered to handle sustained high RPM operation with the durability and...
    09260254
    SKU:
    09260254
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    LENGTH IMPERIAL:
    4.010'
    MATERIAL:
    STAINLESS STEEL
    MODEL:
    BLACK DIAMONDâ„¢
    PRODUCT NAME:
    VALVE
    TULIP ANGLE:
    11°
    APPLICATION:
    INTAKE
    HEAD DIAMETER METRIC:
    39.00 MM
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    STEM DIAMETER IMPERIAL:
    0.2355'
    $37.55
    Qty in Cart: 0
    Quantity:
    Price:
    $37.55
    Subtotal:
  • MOOSE RACING Top End Gasket - Bearcat 400/454 810800

    MOOSE RACING Top End Gasket - Bearcat 400/454 810800

    MOOSE RACING

    $43.80
    A top-end rebuild demands precision gaskets and seals that won't fail under compression and heat—and OEM replacements can drain your budget fast. This complete Moose Racing gasket set gives you every...
    M810800
    SKU:
    M810800
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    PRODUCT NAME:
    GASKET
    RIDING STYLE:
    ATV
    TYPE:
    TOP END
    UNITS:
    KIT
    $43.80
    Qty in Cart: 0
    Quantity:
    Price:
    $43.80
    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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