Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1
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Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1 Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1 Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1 Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1 Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1 Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1
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Get Your RS1 Race-Ready
You want to tear up the sand with the big boys—but those OEM axles just aren’t going to cut it. You need the best of the best if you want to turn your Polaris RZR RS1 into a real racing machine. That’s where Assault Industries' MAS-223 Phoenix Axles come in. They’re designed for the most intense riders and the most extreme conditions. Thanks to Assault’s proprietary high-temp grease blend and race-ready axle construction, Phoenix Axles dominate the competition.
  • Proprietary high-temp grease blend for unmatched performance
  • Incredibly high CV angles
  • 4340 chromoly steel construction
  • Increased shaft size

Built to Withstand Face-Melting Heat!
Here’s a simple fact—heat kills axles. And it doesn’t matter if it’s the constant heat of the desert or the heat generated by pushing your axles to their limits. As temperatures rise, the axle grease breaks down. Without grease, you get friction. That friction ruins your boots and CV joints, and can even cause catastrophic axle failure. Assault invented a premium axle grease blend that won’t break down even in the most extreme conditions. That’s right—you can push your RS1 to its absolute limits without breaking down thanks to Assault’s revolutionary Phoenix Axles.

Tested up to 586.4°F
Phoenix Axles really walk the walk. They were tested up to 586.4°F—as hot as the testing can get—without failure. That’s 61% hotter than the OEM grease, which failed at 365°F. That means it could literally be hot enough to fry an egg outside and these axles won’t even flinch. No standard axles can compete with that kind of premium performance. If you’re looking to race with the professionals (or maybe you ARE a professional), you won’t find better performance axles for your RS1.

The Most Reliable CV Joints
Assault knows that it takes more than industry-leading high-temp grease to make the world’s best racing axles. They upped the game when it comes to the CV joints too. These CV joints are built for those complex, tricky rides that require high articulation angles. Phoenix Axles deliver 100% power no matter how weird and wild the ride gets—and they won’t overheat under stress. Whether you’re tearing up the trail, racing on sand, or clambering on the rocks, these CV joints can handle it.

Beefy Chromoly Axle Shaft
Of course Assault didn’t skimp on the axle shafts either. Phoenix Axles have larger shafts than OEM. Plus they’re made with heat-treated chromoly steel. Combined, that makes them nearly unbreakable. No boulder or log is going to take these axles out! Beefy axle shafts, muscular CV joints, and unstoppable grease make Phoenix Axles the world’s leading performance axle. Would you expect any less from Assault Industries?

WARNING: This product can impact machine operation. Customer and/or user is responsible for ensuring that this product is compatible with their machine as currently configured, properly installed, and understands any impact this product has or might have on the machine's operation.

California Proposition 65 Warning
WARNING: This product may contain a chemical known to the State of California to cause cancer or birth defects or other reproductive harm.
  • Polaris RZR RS1 : 2018-2021
Replaces OEM Part #:
Front : 1333434, 1334492
Rear : 1333124, 1333439, 1333718, 1333944, 1334307, 1334490
Assault Industries offers premium products and extends one of the industry's best warranties to go with them. Each MAS-223 Phoenix Axle (excluding boot) carries a 3 Year warranty against manufacturing defects to the original purchaser, for the period and subject to the terms stated on our Warranty Policy page.

For complete warranty details see our Warranty Policy page. TERMS OF WARRANTY
Assault Industries MAS-223 Phoenix Axles (excluding boots) are warrantied to the original purchaser for a period of 3 years from the date of purchase. If the axle fails within 3 years from the date of purchase, Assault Industries will ship a replacement axle for a flat fee of $100. The axle may be replaced as many times as needed during the original warranty period. Damage resulting from lack of maintenance such as, but not limited to, running for an extended period of time with a damaged boot and/or no grease.

Phoenix axles used with non-SuperATV lift kits are not warrantied against spline damage, due to variation of suspension travel in other manufacturers lift kits. In all warranty cases, the purchaser must provide Assault Industries with proof of purchase and proof of breakage.

How to make a warranty claim?
Before sending anything to Assault Industries, please click below to fill out the appropriate form:



Complete the form, ensuring each field is properly filled out. Follow instructions on each page for the warranty or return process.
Customer is responsible for shipping item back to Assault Industries and is responsible for tracking information. Please keep until a team member has contacted you.

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Snyder PowerSports is not affiliated with Polaris Industries, Kawasaki, Can-Am (Bombardier), Honda, John Deere, Arctic Cat or Yamaha in any way. Nor are we affiliated with any other ATV or UTV manufacturer that may be listed in product titles and/or descriptions. References within this web site to the specified brands and their atv and/or utv model names is for the convenience of the public and does not constitute endorsement or recommendation by Snyder Powersports.

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FREE UPS Ground Shipping Promotion on Orders Over $99

• Free UPS ground shipping promotion is valid only on orders shipped to the lower 48 contiguous continental United States.
• Order total of $99.00 for Ground Shipping must be reached with product purchases only and will not include shipping, overweight charges or other miscellaneous fees. Free shipping order value is calculated on the total amount of your order excluding overweight packages. Over-sized packages and special shipping fees are not waived with this offer. Charges are subject to change. Confirm your shipping charge and method at time of order. 
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Exceptions to FREE Shipping Promotion

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No International Shipping

You may return most new, unopened items for a full refund within 30 days of delivery. These items should be in their original packaging and have their serial number or UPC. Special order returns are at our discretion on a case by case basis. If you would like to make a return or exchange, you must contact us by phone or email and submit an RMA (Return Merchandise Authorization) number before returning your items. This RMA number is usually written on the bill of lading (issued by the mail carrier's shipping department) or somewhere on the packaging. If you cannot find your RMA, one may be obtained by contacting us by phone or email.

All returns will be subject to a 15% restocking fee. Remember, if you would like to return or exchange your item, you must contact us before sending it back. Items returned to us without notification will not be eligible for a refund or exchange.

Returns will not be accepted on items that are:
  • Opened or used
  • Missing their serial number or UPC
  • Special orders (returned at our discretion)
  • Returned more then 30 days after delivery
  • Returned without notification