Instruction Sheets for Part Number LSA-TGI-312372
Longfield Super Finish Ring and Pinion Gears TGI-312372 Toyota 8.0 in. IFS 4.88 Gears
Part Number: LSA-TGI-312372
Longfield Super Finish Ring and Pinion Gears
Longfield Super Finish Toyota 8 in. IFS Clamshell Ring & Pinion Gears - 4.88 3.90 & Up Cases
See More Specifications
|
Check the Fit
Estimated Ship Date: Nov 10, 2026 Would you rather pick it up?
Overview
Longfield Super Finish Ring and Pinion Gears
Longfield's Super Finish ring and pinion gears offer major benefits like zero break-in time, allowing immediate trail use, thanks to their advanced REM Isotropic Super Finishing (ISF) process. This process creates a mirror-smooth surface, drastically cutting friction, heat, and wear for improved performance, durability, and quieter operation, all while using strong 8620 chromoly steel and precision CNC machining. These are the very same type of components that have won multiple championships in professional desert racing and competitive rock crawling circuits and have proven themselves on some of the most grueling off-road courses in the world. Longfield ring and pinion gears are sold as a set. They are also available in kits that often come with high-quality Koyo bearings, new bolts, seals, shims, and essential solid pinion spacers (preventing loosening), and the necessary hardware for a comprehensive upgrade.
Key benefits and features:
* Superior strength—made from heat-treated 8620 chromoly tool steel with a 5-cut tooth profile for better load distribution
* Quieter operation—high-precision Gleason CNC machining results in a more accurate, quieter-running gear set, ideal for daily drivers
* No 'break-in' required—the ISF process eliminates the need for the typical break-in period, letting you hit the trails immediately after installation
* Reduced friction and heat—the super-smooth, low-micro-roughness surface minimizes friction, leading to less heat buildup and improved efficiency
* Enhanced durability and life—less friction means less wear, increasing the overall lifespan of the gears
* Better torque transfer—the combination of accuracy and finish allows for more efficient torque transmission
* Improved oil retention—the super-finished surface holds oil better, aiding lubrication
* Enhanced performance—helps restore power and acceleration lost with larger tires, allowing the engine to operate in a more efficient RPM range
* Better value—Longfield goes directly to Tier 1 OEM manufacturers to have gears made to their exact specifications—by cutting out the middlemen, they can offer the highest quality gears at a competitive price
Applications
Questions & Answers
Ask a Question
What type of question would you like to submit?
(order, shipping, returns, protection plans, etc.). Customer Service Question
a question about this Product. Product Related Question
Reviews Write a Review
Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster