The SuperATV X300 Big Lift Kit Rear Axle is a heavy-duty rear replacement axle for the 2018-2021 Polaris RZR XP Turbo S and 2019-2021 RZR XP 4 Turbo S running a big lift kit. It uses a 300M alloy steel shaft that flexes to absorb impact, CV components made of 300M and 4340 alloy steel, and a 3-year warranty.
This listing is the rear axle only. SuperATV does not list a matching X300 front axle for this lift.
These rzr turbo s axles are for lifted machines. Stock rzr xp turbo s axles are not sized for a lift, so these rzr turbo s lift kit axles fit the geometry. This rzr xp turbo s rear axle is the rzr turbo s axle that takes the most abuse, and polaris rzr turbo s axles in this line carry SuperATV's longest warranty. Shopping for a rzr turbo s rear axle among x300 axles, big lift kit axles or heavy duty rzr axles? Confirm your lift height first.
Key Features
- 300M alloy steel shaft
- CV components made of 300M and 4340 alloy steel
- Maximized CV, spider and cage size for strength
- Flexshaft technology: the shaft flexes to absorb impact
- Reduces strain on CVs and drivetrain components
- CVs packed with proprietary high-temp grease
- 3-year warranty, which SuperATV calls the industry's best axle warranty
Built To Solve: Broken Rear Axles on a Lifted RZR Turbo S
- Stock-length axles binding or pulling apart after a big lift kit
- Stock axles snapping under big tires and hard landings
- CV joints failing from heat and high angles
- Replacing broken axles with more stock-strength parts
Best For: 2018-2021 Polaris RZR XP Turbo S Owners With a Big Lift
- 2018-2021 RZR XP Turbo S owners
- 2019-2021 RZR XP 4 Turbo S owners
- Machines running a big lift kit
- Owners replacing a broken rear axle
Specifications
- Brand: SuperATV
- Product line: X300 heavy-duty axle
- Shaft: 300M alloy steel with Flexshaft technology
- CV components: 300M and 4340 alloy steel
- Grease: proprietary high-temp
- Warranty: 3 years (manufacturing defects, original purchaser)
- Sold: individually
- Length: big lift kit
- Position: rear
- Manufacturer Part Number: AXW-1-75-R-LK6-BT
Fitment
- Polaris RZR XP Turbo S: 2018-2021 (big lift kit)
- Polaris RZR XP 4 Turbo S: 2019-2021 (big lift kit)
Rear axle only, for big lift kit applications. Fitment is not guaranteed on applications not listed above; confirm your year, model and cab before ordering.
FAQ
Is there a matching front axle?
SuperATV lists only the rear X300 axle for the Turbo S big lift kit.
Does it fit a stock-height Turbo S?
No. See our X300 Heavy-Duty Axles for the stock-height Turbo S.
Does it fit the four-seat Turbo S?
Yes. SuperATV lists the 2019-2021 RZR XP 4 Turbo S.
How do X300 axles compare to Rhino 2.0?
X300 uses a 300M alloy steel shaft and 300M/4340 CV components with a 3-year warranty. Rhino 2.0 uses 4340 chromoly with an 18-month warranty and costs less. We list both for the RZR Turbo S.
Can I rebuild an X300 axle later?
Yes. We stock SuperATV X300 boot kits and X300 CV joint kits matched to X300 part numbers, so one worn end does not mean a whole new axle.
What warranty do X300 axles carry?
SuperATV backs each X300 axle with a 3-year warranty against manufacturing defects to the original purchaser.
Why SuperATV X300
SuperATV designs, engineers and tests its X300 axles in-house as the step above its Rhino 2.0 line. X300 swaps Rhino 2.0's 4340 chromoly shaft for 300M alloy steel and builds the CVs from 300M and 4340, and every X300 axle carries a 3-year warranty against manufacturing defects to the original purchaser, double the 18 months on Rhino 2.0.
Complete Your Turbo S Driveline
If one Turbo S axle has failed, check the others for the same wear before you ride again. Pair your X300 axles with the matching X300 boot or CV joint kit for future service, and confirm your year and model against the fitment list.
