ATV/UTV Drivetrain
ATV/UTV Drivetrain Parts at JJ Motorsports
Enhance your ATV or UTV's power transfer with rugged drivetrain components from JJ Motorsports. Our selection includes differential bearing/seal kits, drive shaft assemblies, reverse chains, and steel plates designed for superior strength, friction resistance, and easy installation in challenging off-road conditions. Compatible with Can-Am, Polaris, Kawasaki, and more, these parts exceed OEM specs for better traction, reduced wear, and reliable performance on trails or utility tasks.
Shop trusted brands like Moose Racing for precision kits. Explore related categories such as ATV/UTV engine parts for rebuilds or ATV/UTV braking for complete systems.
Top ATV/UTV Drivetrain Products
- MOOSE RACING Differential Bearing/Seal Kit - Can-Am - Front/Rear 25-2106 – High-speed EMQ bearings with advanced seals for optimal performance.
- MOOSE RACING Center Drive Shaft Bearing Assembly 25-1671 – Complete assembly with aggressive seals to keep out dirt and water.
- MOOSE RACING Transaxle Reverse Chain 25-8001 – Heat-treated for 4.5% stronger shear strength than OEM.
- MOOSE RACING Steel Drive Plates M80-7800-7 – 300% stronger than aluminum with increased flywheel effect for better traction.
- MOOSE RACING Differential Seal Kit - Front 25-2115-5 – High-quality rubber seals for leak-proof differential protection.
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
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On Sale
EPI Differential Bearing/Seal Kit - Front WE290127
EPI
MSRP: $118.99Now: $107.09Was: $118.99A leaking differential is a silent performance killer—it compromises gear protection, accelerates wear, and can leave you stranded mid-season. The EPI Differential Bearing/Seal Kit (WE290127) gives...12050379- SKU:
- 12050379
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- RIDING STYLE:
- ATV
- TYPE:
- DIFFERENTIAL
- PRODUCT NAME:
- BEARING AND SEAL KIT
- POSITION:
- FRONT
- UNITS:
- KIT
MSRP: $118.99Now: $107.09Was: $118.99 -
On Sale
EPI Differential Bearing/Seal Kit - Rear WE290131
EPI
MSRP: $109.99Now: $98.99Was: $109.99A worn differential is a ticking time bomb for driveline reliability. This complete bearing and seal kit gives you everything needed to refresh your front or rear differential with OEM-quality...12050383- SKU:
- 12050383
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- POSITION:
- REAR
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING AND SEAL KIT
- RIDING STYLE:
- ATV
- TYPE:
- DIFFERENTIAL
MSRP: $109.99Now: $98.99Was: $109.99Qty in Cart: 0Quantity:Price:MSRP: $109.99Now: $98.99Was: $109.99Subtotal: -
On Sale
EPI Universal Joint - Suzuki WE100223
EPI
MSRP: $31.99Now: $28.79Was: $31.99A worn or failing universal joint compromises power delivery, creates vibration, and can leave you stranded. The EPI Universal Joint WE100223 restores smooth torque transfer and reliable driveline...12050204- SKU:
- 12050204
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- STYLE:
- WITH U-JOINT
- PRODUCT NAME:
- UNIVERSAL JOINT
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- TYPE:
- TYPE ONE (INSIDE SNAP RINGS)
MSRP: $31.99Now: $28.79Was: $31.99Qty in Cart: 0Quantity:Price:MSRP: $31.99Now: $28.79Was: $31.99Subtotal: -
On Sale
EPI Universal Joint - Suzuki WE100227
EPI
MSRP: $32.99Now: $29.69Was: $32.99A worn or damaged universal joint compromises power delivery, creates vibration, and risks catastrophic drivetrain failure. The EPI Universal Joint WE100227 restores precise torque transmission and...12050206- SKU:
- 12050206
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ATV
- TYPE:
- TYPE ONE (INSIDE SNAP RINGS)
- UNITS:
- KIT
- PRODUCT NAME:
- UNIVERSAL JOINT
- STYLE:
- WITH U-JOINT
MSRP: $32.99Now: $29.69Was: $32.99 -
On Sale
EPI Universal Joint - Kawasaki/Suzuki ATV WE100270
EPI
MSRP: $31.99Now: $28.79Was: $31.99A worn or damaged universal joint compromises power delivery to your wheels and creates dangerous driveline vibration. The EPI Universal Joint (WE100270) restores OEM-equivalent performance with...12050155- SKU:
- 12050155
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- PRODUCT NAME:
- UNIVERSAL JOINT
- UNITS:
- KIT
- STYLE:
- WITH U-JOINT
- RIDING STYLE:
- ATV
- TYPE:
- TYPE ONE (INSIDE SNAP RINGS)
MSRP: $31.99Now: $28.79Was: $31.99Qty in Cart: 0Quantity:Price:MSRP: $31.99Now: $28.79Was: $31.99Subtotal: -
On Sale
EPI Roller Weights WE241014
EPI
MSRP: $64.99Now: $58.49Was: $64.99Roller weight tuning is essential for optimizing your CVT transmission's engagement point and peak RPM delivery. The EPI WE241014 gives you precise control over upshift characteristics, allowing you...WE241014- SKU:
- WE241014
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH
- RIDING STYLE:
- ATV
- STYLE:
- ROLLER
- UNITS:
- 8 PACK
- PRODUCT NAME:
- WEIGHT
MSRP: $64.99Now: $58.49Was: $64.99 -
On Sale
EPI Secondary Spring - Black PEBS1
EPI
MSRP: $32.99Now: $29.69Was: $32.99Precision shift tuning demands components that respond exactly as engineered—not close enough. The EPI Secondary Spring gives you independent control over shift rate, side load pressure, and full...PEBS1- SKU:
- PEBS1
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- CHROME SILICON
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COMPRESSED LENGTH METRIC:
- 32 MM
- INSTALLED LENGTH METRIC:
- 64 MM
- PRODUCT NAME:
- SPRING
- STYLE:
- SECONDARY (DRIVEN)
- TYPE:
- CLUTCH
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- COMPRESSED LOAD:
- 54,5 KG (120 LB)
- COMPRESSED LOAD IMPERIAL:
- 120 LB
- INSTALLED LENGTH:
- 64 MM (2,5')
- INSTALLED LENGTH IMPERIAL:
- 2.5'
- INSTALLED LOAD:
- 33 KG (73 LB)
- INSTALLED LOAD IMPERIAL:
- 73 LB
- RIDING STYLE:
- UTV
- COMPRESSED LENGTH:
- 32 MM (1,25')
- COMPRESSED LOAD METRIC:
- 54.5 KG
- INSTALLED LOAD METRIC:
- 33 KG
MSRP: $32.99Now: $29.69Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $29.69Was: $32.99Subtotal: -
On Sale
EPI Secondary Spring - Blue PEBS2
EPI
MSRP: $32.99Now: $29.69Was: $32.99Precise CVT tuning demands a secondary spring that responds exactly to your specifications—not a generic off-the-shelf compromise. The EPI Secondary Spring (PEBS2) gives you direct control over shift...PEBS2- SKU:
- PEBS2
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COMPRESSED LENGTH:
- 32 MM (1,25')
- INSTALLED LOAD METRIC:
- 33 KG
- MATERIAL:
- CHROME SILICON
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- COMPRESSED LOAD IMPERIAL:
- 135 LB
- COMPRESSED LOAD METRIC:
- 61 KG
- INSTALLED LENGTH:
- 64 MM (2,5')
- INSTALLED LENGTH IMPERIAL:
- 2.5'
- INSTALLED LOAD:
- 33 KG (73 LB)
- INSTALLED LOAD IMPERIAL:
- 73 LB
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BLUE
- COMPRESSED LENGTH METRIC:
- 32 MM
- COMPRESSED LOAD:
- 61 KG (135 LB)
- INSTALLED LENGTH METRIC:
- 64 MM
- PRODUCT NAME:
- SPRING
- STYLE:
- SECONDARY (DRIVEN)
MSRP: $32.99Now: $29.69Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $29.69Was: $32.99Subtotal: -
On Sale
EPI Primary Spring DRS19
EPI
MSRP: $32.99Now: $29.69Was: $32.99Whether you're chasing optimal clutch engagement or maximizing RPM headroom on the track, primary spring selection directly impacts your power delivery and shift consistency. The EPI Primary Spring...11400036- SKU:
- 11400036
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- EACH
- RIDING STYLE:
- ATV
- TYPE:
- CLUTCH
- COLOR/FINISH:
- BRIGHT GREEN
- MATERIAL:
- CHROME SILICON
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- COMPRESSED LOAD IMPERIAL:
- 121 LB
- COMPRESSED LOAD METRIC:
- 55 KG
- INSTALLED LENGTH IMPERIAL:
- 2.5'
- INSTALLED LOAD IMPERIAL:
- 22 LB
- INSTALLED LOAD METRIC:
- 10 KG
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- UTV
- STYLE:
- PRIMARY (DRIVE)
MSRP: $32.99Now: $29.69Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $29.69Was: $32.99Subtotal: -
On Sale
EPI Pro Clutch Kit PRO500
EPI
MSRP: $459.99Now: $413.99Was: $459.99If you ride across varying terrain—from sand dunes to rocky trails—a one-size-fits-all clutch setup will leave performance on the table. The EPI Pro Clutch Kit PRO500 combines the tuning range of...11400752- SKU:
- 11400752
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
- RIDING STYLE:
- UTV
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
MSRP: $459.99Now: $413.99Was: $459.99 -
On Sale
EPI Pro Clutch Kit PRO505
EPI
MSRP: $394.99Now: $355.49Was: $394.99If you frequently switch between different terrain types or adjust your tire sizes, a one-size-fits-all clutch setup will leave you frustrated with poor engagement and throttle response. The EPI Pro...11400757- SKU:
- 11400757
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- RIDING STYLE:
- UTV
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
MSRP: $394.99Now: $355.49Was: $394.99Qty in Cart: 0Quantity:Price:MSRP: $394.99Now: $355.49Was: $394.99Subtotal: -
On Sale
EPI Pro Clutch Kit PRO506
EPI
MSRP: $394.99Now: $355.49Was: $394.99If you regularly ride across different terrain or adjust your setup for varying tire sizes and elevations, the EPI Pro Clutch Kit PRO506 eliminates the need for multiple dedicated kits. This...11400758- SKU:
- 11400758
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- MODEL:
- PRO SERIES
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
MSRP: $394.99Now: $355.49Was: $394.99 -
On Sale
EPI Pro Clutch Kit PRO507
EPI
MSRP: $494.99Now: $445.49Was: $494.99If you ride in variable terrain or frequently change tire sizes, a one-size-fits-all clutch setup will leave performance on the table. The EPI Pro Clutch Kit PRO507 combines the tuning range of four...11400759- SKU:
- 11400759
- Availability:
- Ships Same Business Day
- Weight:
- 3.95 LBS
- MODEL:
- PRO SERIES
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
MSRP: $494.99Now: $445.49Was: $494.99Qty in Cart: 0Quantity:Price:MSRP: $494.99Now: $445.49Was: $494.99Subtotal: -
On Sale
EPI Clutch Kit WE437076
EPI
MSRP: $69.99Now: $62.99Was: $69.99Trail riding demands responsive power delivery, and belt slippage under acceleration robs you of the performance gains you've earned. The EPI Clutch Kit WE437076 restores positive engagement by...11400761- SKU:
- 11400761
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
MSRP: $69.99Now: $62.99Was: $69.99 -
On Sale
EPI Clutch Kit WE437382
EPI
MSRP: $249.99Now: $224.99Was: $249.99If you're running oversized tires or tackling varied terrain—from trails to mud to sand—you're already fighting power loss and delayed throttle response. The EPI Clutch Kit WE437382 restores the...11400658- SKU:
- 11400658
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- UNITS:
- KIT
- ELEVATION IMPERIAL:
- 0' - 3000'
- FOR TIRE SIZE IMPERIAL:
- 27' - 28'
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- CLUTCH KIT
- TYPE:
- CENTRIFUGAL
MSRP: $249.99Now: $224.99Was: $249.99Qty in Cart: 0Quantity:Price:MSRP: $249.99Now: $224.99Was: $249.99Subtotal: -
On Sale
EPI Clutch Kit WE437212
EPI
MSRP: $249.99Now: $224.99Was: $249.99If you're running oversized tires or frequently tackling trail, mud, and sand conditions, the EPI Clutch Kit WE437212 restores the low-end bite and throttle response your stock clutch can't deliver...11400579- SKU:
- 11400579
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- FOR TIRE SIZE IMPERIAL:
- 27' - 28'
- TYPE:
- CENTRIFUGAL
- RIDING STYLE:
- UTV
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- ATV
MSRP: $249.99Now: $224.99Was: $249.99Qty in Cart: 0Quantity:Price:MSRP: $249.99Now: $224.99Was: $249.99Subtotal: -
On Sale
EPI Clutch Kit WE437154
EPI
MSRP: $249.99Now: $224.99Was: $249.99If you're running larger tires or frequently tackling varied terrain—from trails to sand to hauling loads—the EPI Clutch Kit WE437154 restores the low-end bite and throttle response that oversized...11400586- SKU:
- 11400586
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- FOR TIRE SIZE IMPERIAL:
- 27' - 28'
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- CLUTCH KIT
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
MSRP: $249.99Now: $224.99Was: $249.99Qty in Cart: 0Quantity:Price:MSRP: $249.99Now: $224.99Was: $249.99Subtotal: -
On Sale
EPI Clutch Kit WE437159
EPI
MSRP: $359.99Now: $323.99Was: $359.99If you're running a utility machine that handles multiple terrains and work applications, clutch slippage and inconsistent power delivery will cost you efficiency and money. The EPI Clutch Kit...11400550- SKU:
- 11400550
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- UNITS:
- KIT
- FOR TIRE SIZE IMPERIAL:
- STOCK
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- TYPE:
- CENTRIFUGAL
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- ATV
MSRP: $359.99Now: $323.99Was: $359.99 -
On Sale
EPI Clutch Kit WE437060
EPI
MSRP: $339.99Now: $305.99Was: $339.99If you're running a utility machine that handles everything from trail work to hauling loads, belt slippage and inconsistent power delivery will limit your performance and accelerate clutch wear. The...11400482- SKU:
- 11400482
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- FOR TIRE SIZE IMPERIAL:
- STOCK
- PRODUCT NAME:
- CLUTCH KIT
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
MSRP: $339.99Now: $305.99Was: $339.99Qty in Cart: 0Quantity:Price:MSRP: $339.99Now: $305.99Was: $339.99Subtotal: -
On Sale
EPI Mud Clutch Kit - Polaris WE437052
EPI
MSRP: $249.99Now: $224.99Was: $249.99If you've upgraded to larger tires on your Polaris, you've likely noticed a loss of low-end power and sluggish throttle response—that's where the EPI Mud Clutch Kit steps in. This bolt-on upgrade...11400489- SKU:
- 11400489
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- ATV
- FOR TIRE SIZE IMPERIAL:
- 28'+
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
MSRP: $249.99Now: $224.99Was: $249.99Qty in Cart: 0Quantity:Price:MSRP: $249.99Now: $224.99Was: $249.99Subtotal:
