Trail Gear – Rock Assault™ 9 Axle Shafts


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Rock Assault™ 9 Rear Axle Shafts

Trail-Gear is now offering a true, full-float 35-Spline Axle Shaft. Made from heat-treated 4340 Chromoly, these axle shafts have been engineered to work with the Trail-Gear Rock Assault™ 9 Rear Axle Housing with Unit Bearing Pockets (Unit Bearings sold separately). These shafts are designed to fit the Rock Assault™ 9 housings; available in 60″, 65″ and 68″ WMS, whether you are running an ARB or a Detroit Locker. These shafts will also work with axle housing that have similiar dimensions as listed below. The shafts have a tapered design that allow for more yield during extra torque load letting them flex without breaking.Sold individually, in pairs or as part of an axle housing kit.


Part Number (SINGLE) Overall
320036-KIT 31.5″ 2.5″
320035-KIT 32″ 2.5″
320034-KIT 34″ 2.5″
320033-KIT 34.5″ 2.5″
320032-KIT 35.5″ 2.5″
320031-KIT 36″ 2.5″



Part Number (PAIRS) Overall
320042-KIT 31.5″ 2.5″
320041-KIT 32″ 2.5″
320040-KIT 34″ 2.5″
320039-KIT 34.5″ 2.5″
320038-KIT 35.5″ 2.5″
320037-KIT 36″ 2.5″



  • 35-Spline Axle Shaft
  • Made from heat-treated 4340 Chromoly
  • Designed to fit the Rock Assault™ 9 housings
  • Tapered design that allow for more yield during extra torque load
  • Available in 60”, 65” and 68” WMS, whether you are running an ARB or a Detroit Locker


Application Data

  • Rock Assualt™ 9 Axle Housing




This product carries our Lifetime Warranty. Our Lifetime Warranty covers manufacturing defects and breakage during normal use, for as long as you own the vehicle. All warranties are limited to the original purchaser and are not transferable to subsequent owners of the product.

The warranty period commences on the purchase date of the product. Trail-Gear warrants that it will repair or replace, free of charge, any eligible product which, under normal conditions of use and service, suffers breakage or proves to be defective in materials or workmanship. This warranty does not cover any labor costs incurred in diagnosis of defects, removal or reinstallation of a product, nor does it cover any other consequential expenses.


Please read and review our return and warranty requirement document before sending in products.


Warranty Exclusions

Trail-Gear Inc. warranty does not cover, and Trail-Gear Inc. shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Trail-Gear products, except where such agreements are within the provisions of this Warranty.

Additionally excluded from this warranty are parts which are subject to normal wear and tear, such as bushings, fluids, hoses, gaskets, belts, etc. Products not manufactured by Trail-Gear Inc. are excluded from any warranty and shall be handled with the original manufacturer.

Return shipping charges will apply. Any part for which a warranty replacement is sought must be returned to Trail-Gear Inc. before any replacement items can be shipped. All replacement parts shipped before the suspect part has been received and evaluated by Trail-Gear, MUST BE PAID IN FULL. In such a case, after the suspect part has been received and approved for a warranty replacement, the purchase price for the replacement will be refunded.

To begin your warranty claim:

  • Please contact Trail-Gear Inc. prior to returning any product under warranty to verify that warranty is still in effect. Please call 559-252-4950 or email
  • Once you have verified the product is still under warranty, the product must be shipped back to Trail-Gear Inc. at the expense of the customer. Ship all products ATTN: WARRANTY to 5356 E. Pine Avenue, Fresno, Ca 93727.
  • Please place a copy of the original invoice clearly marked on the outside of the package.
  • Please include a short note stating the problem you are experiencing.
  • If any of the above mention policies is not met, the package will be refused or warranty claim denied.

By completing the steps above, this will ensure faster processing of your claim so that Trail-Gear can get your product back to you as quickly as possible. All warranties are generally processed within 2-3 business days of Trail-Gear receiving the parts from you. Additional delays may be incurred if product needs additional testing or repairing.

If you are an international customer, please email the warranty department at to receive further instruction. International customers may have the option to field destroy an approved warranty to avoid costly return shipping. In this case, any shipping charges for replacement parts will be at the expense of the customer.

Additional information

Weight N/A
Dimensions N/A