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 Roller Weights WE241016
EPI
MSRP: $64.99Now: $58.49Was: $64.99Roller weight tuning directly controls your CVT's upshift points and peak RPM delivery—critical variables for extracting maximum power and optimizing power band characteristics. Whether you're...WE241016- SKU:
- WE241016
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH
- UNITS:
- 8 PACK
- STYLE:
- ROLLER
- PRODUCT NAME:
- WEIGHT
- RIDING STYLE:
- ATV
MSRP: $64.99Now: $58.49Was: $64.99 -
On Sale
EPI Roller Weights WE241020
EPI
MSRP: $64.99Now: $58.49Was: $64.99CVT transmission tuning demands precision—and the EPI Roller Weights WE241020 deliver exactly that. By fine-tuning your upshift behavior and peak RPM engagement, these weights optimize the balance...WE241020- SKU:
- WE241020
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- STYLE:
- ROLLER
- RIDING STYLE:
- ATV
- UNITS:
- 8 PACK
- PRODUCT NAME:
- WEIGHT
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH
MSRP: $64.99Now: $58.49Was: $64.99 -
On Sale
EPI Secondary Spring - Yellow CATV12
EPI
MSRP: $32.99Now: $29.69Was: $32.99Fine-tuning your CVT transmission's shift characteristics requires a secondary spring that delivers precision and consistency—and that's exactly what the EPI Secondary Spring Yellow (CATV12) provides...CATV12- SKU:
- CATV12
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COMPRESSED LOAD:
- 66 KG (145 LB)
- RIDING STYLE:
- UTV
- COMPRESSED LOAD METRIC:
- 66 KG
- INSTALLED LENGTH IMPERIAL:
- 3.5'
- INSTALLED LOAD IMPERIAL:
- 99 LB
- INSTALLED LOAD METRIC:
- 45 KG
- RIDING STYLE:
- ATV
- TYPE:
- CLUTCH
- COLOR/FINISH:
- YELLOW
- COMPRESSED LENGTH:
- 32 MM (1,25')
- INSTALLED LENGTH METRIC:
- 89 MM
- MATERIAL:
- CHROME SILICON
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- COMPRESSED LENGTH METRIC:
- 32 MM
- COMPRESSED LOAD IMPERIAL:
- 145 LB
- INSTALLED LENGTH:
- 89 MM (3,5')
- INSTALLED LOAD:
- 45 KG (99 LB)
- PRODUCT NAME:
- SPRING
- STYLE:
- SECONDARY (DRIVEN)
- UNITS:
- EACH
MSRP: $32.99Now: $29.69Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $29.69Was: $32.99Subtotal: -
On Sale
EPI Primary Spring DRS12
EPI
MSRP: $32.99Now: $29.69Was: $32.99Dial in your clutch engagement point and peak RPM threshold with precision-grade adjustability—no more settling for one-size-fits-all clutch behavior. The DRS12 lets you customize your power delivery...DRS12- SKU:
- DRS12
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- CLUTCH
- COMPRESSED LOAD IMPERIAL:
- 140 LB
- COMPRESSED LOAD METRIC:
- 63.5 KG
- PRODUCT NAME:
- SPRING
- COLOR/FINISH:
- RED
- INSTALLED LOAD METRIC:
- 16 KG
- MATERIAL:
- CHROME SILICON
- RIDING STYLE:
- UTV
- STYLE:
- PRIMARY (DRIVE)
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- INSTALLED LENGTH IMPERIAL:
- 2.5'
- INSTALLED LOAD IMPERIAL:
- 35 LB
- RIDING STYLE:
- ATV
- UNITS:
- EACH
MSRP: $32.99Now: $29.69Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $29.69Was: $32.99Subtotal: -
On Sale
EPI Primary Spring DRS13
EPI
MSRP: $32.99Now: $29.69Was: $32.99Dial in your clutch engagement point and peak RPM with precision that matches your exact racing demands. The EPI Primary Spring DRS13 gives you the fine-tuning control that separates competitive lap...DRS13- SKU:
- DRS13
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- ORANGE
- MATERIAL:
- CHROME SILICON
- COMPRESSED LOAD METRIC:
- 63.5 KG
- PRODUCT NAME:
- SPRING
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- INSTALLED LENGTH IMPERIAL:
- 2.5'
- INSTALLED LOAD IMPERIAL:
- 75 LB
- INSTALLED LOAD METRIC:
- 34 KG
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- COMPRESSED LOAD IMPERIAL:
- 140 LB
- RIDING STYLE:
- UTV
- STYLE:
- PRIMARY (DRIVE)
- TYPE:
- CLUTCH
MSRP: $32.99Now: $29.69Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $29.69Was: $32.99Subtotal: -
On Sale
EPI Weight Bushing - 12 Pack WB12
EPI
MSRP: $91.99Now: $82.79Was: $91.99Worn bushings compromise suspension geometry, steering response, and overall chassis stability—issues that compound over time and can become safety concerns on track or street. The EPI Weight Bushing...11400079- SKU:
- 11400079
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- CLUTCH WEIGHT
- RIDING STYLE:
- ATV
- UNITS:
- 12 PACK
MSRP: $91.99Now: $82.79Was: $91.99 -
On Sale
EPI Secondary Spring - Red KSS4
EPI
MSRP: $32.99Now: $29.69Was: $32.99Fine-tuning your clutch engagement is the difference between consistent, predictable shifts and unpredictable power loss on the track. The EPI Secondary Spring - Red KSS4 gives you precise control...11400035- SKU:
- 11400035
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- INSTALLED LENGTH:
- 64 MM (2,5')
- INSTALLED LENGTH IMPERIAL:
- 2.5'
- UNITS:
- EACH
- COMPRESSED LOAD IMPERIAL:
- 326 LB
- COMPRESSED LOAD METRIC:
- 148 KG
- INSTALLED LENGTH METRIC:
- 64 MM
- INSTALLED LOAD IMPERIAL:
- 237 LB
- INSTALLED LOAD METRIC:
- 107.5 KG
- STYLE:
- PRIMARY (DRIVE)
- TYPE:
- CLUTCH
- COMPRESSED LENGTH IMPERIAL:
- 1.25'
- INSTALLED LOAD:
- 107,5 KG (237 LB)
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- UTV
- COLOR/FINISH:
- RED
- COMPRESSED LENGTH:
- 32 MM (1,25')
- COMPRESSED LENGTH METRIC:
- 32 MM
- COMPRESSED LOAD:
- 148 KG (326 LB)
- MATERIAL:
- CHROME SILICON
- RIDING STYLE:
- ATV
MSRP: $32.99Now: $29.69Was: $32.99 -
On Sale
EPI Pro Clutch Kit PRO502
EPI
MSRP: $494.99Now: $445.49Was: $494.99If you regularly switch between different riding conditions—from sand dunes to rocky terrain to muddy trails—a one-size-fits-all clutch setup will always be a compromise. The EPI Pro Clutch Kit...11400754- SKU:
- 11400754
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- MODEL:
- PRO SERIES
MSRP: $494.99Now: $445.49Was: $494.99Qty in Cart: 0Quantity:Price:MSRP: $494.99Now: $445.49Was: $494.99Subtotal: -
On Sale
EPI Pro Clutch Kit PRO504
EPI
MSRP: $459.99Now: $413.99Was: $459.99If you ride across diverse terrain or frequently change tire sizes, a one-size-fits-all clutch setup will leave you hunting for optimal performance. The EPI Pro Clutch Kit PRO504 combines four...11400756- SKU:
- 11400756
- Availability:
- Ships Same Business Day
- Weight:
- 5.45 LBS
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- MODEL:
- PRO SERIES
MSRP: $459.99Now: $413.99Was: $459.99Qty in Cart: 0Quantity:Price:MSRP: $459.99Now: $413.99Was: $459.99Subtotal: -
On Sale
EPI Clutch Kit AW443152
EPI
MSRP: $279.99Now: $251.99Was: $279.99If you've upgraded to oversized tires or frequently tackle mixed terrain, the EPI Clutch Kit AW443152 restores the low-end punch and throttle responsiveness your stock clutch can't deliver. This kit...11400700- SKU:
- 11400700
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- PRODUCT NAME:
- CLUTCH KIT
- ELEVATION IMPERIAL:
- 0' - 3000'
- FOR TIRE SIZE IMPERIAL:
- 27' - 28'
- RIDING STYLE:
- UTV
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
MSRP: $279.99Now: $251.99Was: $279.99Qty in Cart: 0Quantity:Price:MSRP: $279.99Now: $251.99Was: $279.99Subtotal: -
On Sale
EPI Clutch Kit - Kawasaki AW443154
EPI
MSRP: $279.99Now: $251.99Was: $279.99If you've upgraded to larger tires on your Kawasaki, you're likely experiencing power loss and sluggish throttle response—the EPI Clutch Kit AW443154 is engineered to restore that performance gap...11400701- SKU:
- 11400701
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- FOR TIRE SIZE IMPERIAL:
- 28'+
- PRODUCT NAME:
- CLUTCH
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
MSRP: $279.99Now: $251.99Was: $279.99Qty in Cart: 0Quantity:Price:MSRP: $279.99Now: $251.99Was: $279.99Subtotal: -
On Sale
EPI Clutch Kit WE437425
EPI
MSRP: $219.99Now: $197.99Was: $219.99If you're running oversized tires or frequently tackling trail, mud, and sand conditions, you're likely experiencing sluggish low-end response and belt slip that compromises acceleration. The EPI...11400639- SKU:
- 11400639
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CLUTCH KIT
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
- FOR TIRE SIZE IMPERIAL:
- 27' - 28'
- RIDING STYLE:
- ATV
MSRP: $219.99Now: $197.99Was: $219.99Qty in Cart: 0Quantity:Price:MSRP: $219.99Now: $197.99Was: $219.99Subtotal: -
On Sale
EPI Clutch Kit WE437444
EPI
MSRP: $359.99Now: $323.99Was: $359.99If your riding demands versatility—whether you're tackling trails, hauling loads, or navigating variable terrain—the EPI Clutch Kit WE437444 delivers the responsiveness you need without requiring...11400640- SKU:
- 11400640
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- TYPE:
- CENTRIFUGAL
- FOR TIRE SIZE IMPERIAL:
- STOCK
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- RIDING STYLE:
- UTV
- ELEVATION IMPERIAL:
- 0' - 3000'
MSRP: $359.99Now: $323.99Was: $359.99Qty in Cart: 0Quantity:Price:MSRP: $359.99Now: $323.99Was: $359.99Subtotal: -
On Sale
EPI Clutch Kit WE437446
EPI
MSRP: $374.99Now: $337.49Was: $374.99If you're running oversized tires or pushing your machine across varied terrain, you're likely experiencing power loss and sluggish throttle response—issues that compound under load. The EPI Clutch...11400641- SKU:
- 11400641
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- RIDING STYLE:
- ATV
- ELEVATION IMPERIAL:
- 0' - 3000'
- FOR TIRE SIZE IMPERIAL:
- 27' - 28'
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CLUTCH KIT
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
MSRP: $374.99Now: $337.49Was: $374.99 -
On Sale
EPI Mud Clutch Kit - Polaris WE437448
EPI
MSRP: $374.99Now: $337.49Was: $374.99When you upsize your Polaris tires, you're asking more from your clutch system—and stock components simply can't keep pace. The EPI Mud Clutch Kit restores the low-end power and torque your machine...11400642- SKU:
- 11400642
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- ATV
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
- FOR TIRE SIZE IMPERIAL:
- 28'+
MSRP: $374.99Now: $337.49Was: $374.99 -
On Sale
EPI Clutch Kit WE437403
EPI
MSRP: $374.99Now: $337.49Was: $374.99If you've upgraded to oversized tires or frequently operate in demanding conditions like trail riding, mud, or sand, the EPI Clutch Kit WE437403 restores the low-end and midrange performance your...11400644- SKU:
- 11400644
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CLUTCH KIT
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
- FOR TIRE SIZE IMPERIAL:
- 30' - 32'
- RIDING STYLE:
- ATV
MSRP: $374.99Now: $337.49Was: $374.99 -
On Sale
EPI Mud Clutch Kit - Polaris WE437405
EPI
MSRP: $374.99Now: $337.49Was: $374.99If you've upgraded to larger tires on your Polaris, you know the power loss and sluggish low-end response that comes with them. The EPI Mud Clutch Kit WE437405 restores that lost performance by...11400645- SKU:
- 11400645
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- FOR TIRE SIZE IMPERIAL:
- 30'+
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- TYPE:
- CENTRIFUGAL
- UNITS:
- KIT
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- ATV
MSRP: $374.99Now: $337.49Was: $374.99 -
On Sale
EPI Clutch Kit WE437430
EPI
MSRP: $374.99Now: $337.49Was: $374.99If you're running a utility machine that pulls double duty—whether you're tackling trails one weekend and hauling loads the next—a one-size-fits-all clutch kit is essential to maintaining consistent...11400647- SKU:
- 11400647
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- UNITS:
- KIT
- TYPE:
- CENTRIFUGAL
- FOR TIRE SIZE IMPERIAL:
- STOCK
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- ELEVATION IMPERIAL:
- 0' - 3000'
MSRP: $374.99Now: $337.49Was: $374.99Qty in Cart: 0Quantity:Price:MSRP: $374.99Now: $337.49Was: $374.99Subtotal: -
On Sale
EPI Clutch Kit WE437432
EPI
MSRP: $374.99Now: $337.49Was: $374.99If you're running oversized tires or frequently hauling loads, you're fighting power loss and sluggish throttle response—the EPI Clutch Kit WE437432 corrects both issues with optimized engagement...11400648- SKU:
- 11400648
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- UNITS:
- KIT
- ELEVATION IMPERIAL:
- 0' - 3000'
- FOR TIRE SIZE IMPERIAL:
- 30' - 32'
- PRODUCT NAME:
- CLUTCH KIT
- RIDING STYLE:
- UTV
- TYPE:
- CENTRIFUGAL
MSRP: $374.99Now: $337.49Was: $374.99 -
On Sale
EPI Mud Clutch Kit - Polaris WE437434
EPI
MSRP: $374.99Now: $337.49Was: $374.99Running larger tires on your Polaris throws off your clutch calibration, causing power loss and sluggish throttle response—the EPI Mud Clutch Kit WE437434 restores that lost performance and gives you...11400649- SKU:
- 11400649
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- ELEVATION IMPERIAL:
- 0' - 3000'
- RIDING STYLE:
- UTV
- TYPE:
- CENTRIFUGAL
- PRODUCT NAME:
- CLUTCH KIT
- UNITS:
- KIT
- FOR TIRE SIZE IMPERIAL:
- 30'+
MSRP: $374.99Now: $337.49Was: $374.99
