Longfield 30-Spline Birfield/Axle Kits
Longfield™ 30-Spline 4340 Chromoly Axle & Birfield Kit
The new 30 spline axle kit is a perfect match for your next budget build. This kit offers an increase in strength over stock axles (76% Stronger) without breaking the bank. Reminder: This kit comes with a 12-month warranty against breakage and the 30 spline birfields are single heat treated.
With larger tires and more horsepower being used on the trails these days, upgrades to your axle are more critical than ever. In a Toyota, one of the common failures is the stock 27-spline birfields and axles. The solution to this problem is our Longfield™ 30-Spline 4340 Chromoly Axle and Birfield Kit. These birfields and axles will get you to wherever you need to go and give you confidence and peace of mind to run any trail.
The Longfield™ birfields are made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers. The Longfield™ birfield housing is made out of forged 4340 chromoly steel. The axle shafts are also made out of 4340 chromoly steel. The internals of our Longfield™ birfields are made out of 4340 chromoly steel and heat-treated for superior strength.
The Longfield 30-spline Birfields allow up to 40 degrees of turning radius and have a consistent breaking point of 8900-9000 foot-pounds of torque (all testing data is based on internal testing at TGI).
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Axle Shaft Dimensions
- Birfields are made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers
- Birfield housing is made out of forged 4340 chromoly steel
- Internals of our Longfield™ birfields are made out of 4340 chromoly steel and heat-treated for superior strength
- The axle shafts are also made out of 4340 chromoly steel
|P/N||Description||Short Side||Long Side|
|301688-1-KIT||Longfield 30-Spline Super Set||15-7/16"||31-7/16"|
|301724-1-KIT||Longfield 30-Spline Super Set, +3||18-7/16"||31-7/16"|
|301725-1-KIT||Longfield 30-Spline Super Set, +5||19-7/16"||32-7/16"|
- 1979-1985 Toyota Pickup (All Engines)
- 1984-1985 Toyota 4Runner (All Engines)
- Toyota Solid Front Axle Housing
- Rock Assault™ Front Axle Housing
If you have any questions on the use or installation of this product please contact our customer support at (559)-549-6737
All products carry our 12 Month Limited Warranty. All warranties are limited to the original purchaser and are not transferable to subsequent owners of the product. The warranty period begins on the purchase date. Trail-Gear warrants that it will repair or replace, free of charge, any eligible product which, under normal conditions of use and service, 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.
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.
Specifically excluded from this warranty are failures caused by lack of maintenance, misuse, negligence, modification, abuse, improper application, crash damage, installation or operation, or failures caused by unauthorized service or use of unauthorized parts.
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.
All parts used in a competitive racing environment are excluded from this warranty. If, after inspection, a part returned, under any warranty, is deemed to be ineligible for warranty repair or replacement, the part may be repaired or replaced for a discounted cost. 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.
- Please contact Trail-Gear Inc. at 559-252-4950 or email [email protected] prior to returning any product under warranty to verify that warranty is still in effect.
- Products must be shipped back to Trail-Gear Inc. at the expense of the customer.
- ATTN: WARRANTY
- 5356 E. Pine Avenue
- Fresno, CA 93727.
Ship all products to:
- Please place a clearly marked copy of the original invoice inside the package.
- Please include a short note stating the problem you are experiencing.
If any of the above mentioned policy 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 [email protected] 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.