Most heavy-duty axles survive by being stiffer, which just pushes the shock load into the CVs, differential and transmission. The X300 Axle for the Polaris RZR XP Turbo takes a different approach. Its 300M alloy steel Flexshaft twists under a torque spike that would break other axles, then returns to its original shape, absorbing the load before it reaches more expensive drivetrain parts. The CVs are 300M and 4340 steel with maximized CV, spider and cage sizes, packed with high-temp grease. Each axle is backed by a 3-year warranty, which is the best axle warranty in the industry. It's sold individually, front or rear, for the 2016-2021 XP Turbo and XP 4 Turbo.
Highlights
- 300M alloy steel shaft with Flexshaft technology
- CV components made of 300M and 4340 alloy steel
- Maximized CV, spider and cage size for superior strength
- Absorbs impact and reduces strain on CVs and drivetrain components
- CVs packed with proprietary high-temp grease
- Backed by a 3-year warranty
It's All About the Flex
When an X300 takes a torque load that would snap a rigid axle, the shaft twists until the load passes and then springs back. That relieves much of the stress that would otherwise go into the CVs and differential, so you get less wear and tear on the parts that cost far more to replace.
Why 300M
300M is an aircraft-grade alloy chosen for its high strength, higher silicon content and vanadium. Those properties, combined with the shaft design, make the X300's signature flex possible, and that's what lets it survive wild vehicle modifications.
Built for Big Tires and Big Rides
Bigger tires multiply the shock that goes through an axle every time a spinning tire hooks up. If you're running a lift, portals or oversized tires and are tired of breaking parts, X300 is built for you. It's the axle to choose when you'd rather have the shaft flex than have a CV or differential break.
Warranty
X300 carries a 3-year warranty, the best for any axle anywhere, which shows how confident the maker is in the design.
Replaces OEM Part Numbers
- Front: 1333434, 1333942, 1334273
- Rear: 1333718, 1333858, 1334189
Know Before You Buy
- Will not fit the 2018-2021 RZR Turbo S.
- Not compatible with anti-lock brake systems (ABS).
- May require some minor grinding for proper fitment; see instructions.
- Sold individually; choose front or rear.
What's in the Box
- (1) X300 axle (front or rear, as selected)
Who It's For and What Pairs Well
This axle is for big-tire, lifted and aggressive Turbos where axle and differential failures are common. Browse matching axles in RZR XP Turbo axles and CVs, add a lift from RZR XP Turbo lift kits, and see RZR XP Turbo portal gear lifts.
Fitment
| Year | Make | Model |
|---|---|---|
| 2016-2021 | Polaris | RZR XP Turbo |
| 2016-2021 | Polaris | RZR XP 4 Turbo |
Replaces OEM Part #
Front: 1333434, 1333942, 1334273
Rear: 1333718, 1333858, 1334189
- Will NOT Fit 2018-2021 RZR Turbo S
- May require some minor grinding for proper fitment, see instructions.
- Not compatible with Anti-Lock Brake Systems (ABS)
- source:
- superatv
- satv_url:
- https://www.superatv.com/polaris-rzr-xp-turbo-heavy-duty-axles-x300
- fitment_raw:
- Polaris RZR XP Turbo 2016-2021; Polaris RZR XP 4 Turbo 2016-2021
- install_pdf:
- https://madmin.superatv.com/amfile/file/download/file/11953/product/13714/
- desc_status:
- rewritten_2026-10-23
- sub_brand:
- X300 Axles
