EPI WE100999 U-Joint for Polaris Sportsman Scrambler
Replace a worn or failing driveline joint with the EPI WE100999 U-Joint for Polaris Sportsman Scrambler. Designed as a high-quality OE replacement universal joint, this part fits select Polaris Sportsman, Scrambler, and Ranger Diesel models. If your ATV or UTV has driveline vibration, clunking, looseness, or inconsistent power transfer, replacing the U-joint can help restore smoother drivetrain performance.
EPI manufactures replacement U-joints for many ATV and SxS applications, making this a practical repair solution for riders who need dependable fitment and reliable function. Whether you ride a Polaris Sportsman 850, Sportsman XP 1000, Scrambler 850, Scrambler XP 1000, or Ranger Diesel, the WE100999 universal joint is built for maintenance, repair, and off-road drivetrain service.
Key Features
- OE replacement design: Built to replace worn factory-style U-joints on compatible Polaris models.
- High-quality EPI construction: Manufactured for dependable ATV and UTV driveline repair.
- Restores driveline operation: Helps support smooth power transfer through the prop shaft and drivetrain.
- Ideal for worn U-joints: Suitable for repairs involving vibration, clunking, looseness, or damaged joints.
- Location-specific fitment: Commonly used in EPI diagram locations 2 and 4, with some Ranger Diesel Crew applications also listing location 3.
- Polaris-focused compatibility: Designed for select Sportsman, Scrambler, and Ranger Diesel applications.
Technical Specifications
- Brand: EPI Performance
- Part Number: WE100999
- Product Type: U-Joint / universal joint
- Application: Polaris ATV / UTV driveline replacement
- Replacement Type: OE-style replacement part
- Primary Fitment Locations: Location 2 and Location 4; select Ranger Diesel Crew applications may use Location 3
- Compatible Brand: Polaris
Compatibility / Applications
This Polaris Sportsman U-Joint replacement fits select Polaris models including:
- Polaris Sportsman 550: Select 2011–2014 models, including EPS, Touring EPS, and X2 applications
- Polaris Sportsman 850: Select 2010–2017 models, including XP, EPS, SP, Touring, Touring SP, and X2 applications
- Polaris Sportsman XP 1000: Select 2015–2017 models, including LE applications
- Polaris Sportsman Touring XP 1000: Select 2015–2017 models
- Polaris Scrambler 850: Select 2013–2017 models, including HO and EPS applications
- Polaris Scrambler XP 1000: Select 2014–2017 models
- Polaris Ranger Diesel: Select 2014–2015 models
- Polaris Ranger Diesel Crew: Select 2014 models

Fitment Notes
Some 2011 Polaris Sportsman 550 and Sportsman 850 models require a build date of 11/23/10 and after. Always verify your exact year, model, trim, build date, and U-joint location before ordering or installation.
Why Choose This EPIU-Joint for Polaris Sportsman Scrambler?
The WE100999 U-Joint for Polaris Sportsman Scrambler is a reliable replacement option for Polaris owners who want to correct driveline wear before it leads to larger drivetrain issues. A worn universal joint can create unwanted vibration, noise, and unstable power transfer, especially during off-road riding or utility use.
For buyers searching for a Polaris Sportsman 850 U-Joint, Polaris Sportsman XP 1000 U-Joint, Polaris Scrambler U-Joint replacement, or Polaris Ranger Diesel U-Joint, the EPI WE100999 provides a fitment-focused OE replacement solution for smooth ATV and UTV driveline repair.
Cross-reference part/SKU numbers: 54-60674, EPI-WE100999









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