Redding California
530-244-7709
Auto Repair, Custom Truck Acessories
I want your business, I have most major brands available. Please call me on the phone to place your order. I offer large discounts over the phone where I can't list them online. 530-244-7709, Military and First Responder Discounts!
5% Off ADS Shocks, code: ADSFXP
5% off Rigid Lights, code:
RIGIDFXP
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).
- 1979-1985 Toyota Pickup (All Engines)
- 1984-1985 Toyota 4Runner (All Engines)
- Toyota Solid Front Axle Housing
- Rock Assault™ Front Axle Housing
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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" |
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.