
With larger tires and more horse power than ever before being used on the trails these days, upgrades for your rig are more critical than ever. In a Toyota, one of the common failures are your stock 27 spline birfields. That is why we have developed our new 30 spline chromoly birfields, the Dirty 30s' ™. This birfield will get you to where you need to go and give you confidence and peace of mind while you are getting there.
These Dirty 30’s are made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers. The ball bearings are manufactured out of the highest quality attainable in chrome steel ball bearing manufacturing, AISI 52100 is the standard of material used. The 30 spline axle shafts are 100% chromoly with a polished seal surface.
These parts have undergone years of extensive in-house and field testing and we are proud to share the results with you. The average failure rate was consistently at 8500 ft. lbs. of applied torque at a 30 degree angle. They were also field tested at the Hammers in our competition FToy and other buggies and trucks with no failures to report. In fact, we feel so confident about the quality of these Dirty 30’s that we are offering them with a no questions asked lifetime warranty.
Note: Some minor clearancing of the knuckle ball may be required.
*Made in the USA*
Note: Not an EMPI product.
Dirty 30's™ 30 Spline Birfield/Axle Kit, 140065-1-KIT, $608
This Dirty 30 +3 Kit is designed exclusively for our Rock Assault™ Front Axle Housing. The Rock Assault™ Front Axle housing is 3" longer than stock on the short side of the axle tube, so The Dirty 30 +3 Birfield Kit has a +3" short side axle shaft.
*Made in the USA*
Dirty 30 +3" Birfield Kit, $608, 140268-1-KIT
Trail-Gear is proud to introduce our newest addition to the Dirty 30 family, The Dirty 30 FJ 40 Birfield Kit. These Dirty 30 FJ 40 Birfield Kits are built with the same indestructible birfields and axle shafts that are in our mini truck Dirty 30 birfield kits. These things are so strong we are backing them up with our No Questions Asked Warranty. Upgrading to the Dirty 30 FJ 40 Birfield Kit is a great time to upgrade to the larger mini truck knuckles, this will allow you to have a larger diameter knuckle stud and with a spring over conversion you can also run a high steer kit.
This kit will go right into your 1978 and newer FJ 40, and all years of the FJ 55 with disc brakes. Some minor clearancing of the knuckle may be required.
Kit Includes:
*Made in the USA*
Dirty 30 FJ 40 Birfield Kit, $608, 140076-1-KIT
This Dirty 30 Birfield Kit is specially designed to fit an FJ 60 Land Cruiser and make its axles much stronger than stock. This kit comes with our famous "No Questions Asked Lifetime Warranty". Installation is very simple, they go right in with only minor clearancing of the knuckle ball. No other parts are needed to install this kit.
Kit Includes:
*Made in the USA*
Dirty 30 FJ 60-62 Birfield Kit, $608, 140272-1-KIT
These birfields will install as OEM chromoly replacements. They are 27 spline, and no grinding of the knuckle ball is required upon installation. The kit includes all necessary parts to complete the install, and includes new C clips. Kits come with a 1 year free replacement warranty against defects in material or workmanship.
Kit Includes:
27 Spline Chromoly Birfield Kit, 140362-1-KIT, $368
These axle shafts are the best of the best; manufactured from 4340 chromoly and consistently tested to a failure rate of between 8,000ft/lbs to 8,500ft/lbs. They have a fully machined and polished seal surface and all 30 spline shafts come with c-clips already installed. These shafts are great for replacements or spares.
All Dirty 30™ axle shafts include our No Questions Asked Lifetime Warranty. More applications coming soon.
Note: 27 Spline shafts are shipped as shaft only and do not inclue c-clips.
Available options:
Bigger tires mean more failure points, keep your rig running problem –free with Trail-Gear’s OEM replacement 1979-85 Toyota hub gears made entirely of 4340 chromoly. The TG Chromo Gears are so strong they will be able to handle all the abuse you put them through. They come backed with Trail-Gear’s world-famous “No Questions Asked” warranty. The TG Chromo Hub Gears are a direct replacement that requires no modifications. Simply pop them in and drive with confidence. You can choose to purchase a pair of the inner locking gears or outer locking gears separately, or purchase a complete set of four (1 pair inner gears and 1 pair outer gears) and save!
Note: Does not fit IFS hubs.
Available Options:
Buy a complete set of TG Chromo Inner and Outer Hub Gears and save!
This is an OEM style, 27-spline birfield made entirely out of 4340 chromoly material. The material upgrade makes this birfield much stronger than stock.
Note: All Trail-Gear products carry a one year warranty against defects. This warranty covers defects in material and workmanship. An example of a covered defect would be a missed machining step that prevents installation or a significant internal material void. This warranty does not cover normal failure or breakage that is typical when using stock joints in extreme conditions. 4340 Chromoly Birfield joints will not hold up to extreme usage with oversized tires.
"Better Than Stock" 4340 Chromoly Birfield, 140182-1-KIT, $104 Each
This snap ring goes on the outer stub shaft of your birfield and keeps the birfield from drifting too far into the axle assembly.
Birfield Snap Ring, 140162-1-KIT, $3.41
With larger tires and more horse power than ever before being used on the trails these days, upgrades for your rig are more critical than ever. In a Toyota, one of the common failures are your stock 27 spline birfields. That is why we have developed our new 30 spline chromoly birfields, the Dirty 30's™. This birfield will get you to where you need to go and give you confidence and peace of mind while you are getting there.
*Made in the USA*
Dirty 30 Birfield, 140229-1-KIT, $209 Each