Longfield Ring and Pinion Gears TGI-310037 Toyota 8.0 in. IFS 4.88 Gears

Write the First Review

Part Number: LSA-TGI-310037

$279.00

Longfield Toyota 8 in. IFS Clamshell Ring and Pinion Gears - 4.88 3.73 & Down Cases
See More Specifications | Check the Fit

Longfield Ring and Pinion Gears TGI-310037 Toyota 8.0 in. IFS 4.88 Gears

Longfield Ring and Pinion Gears TGI-310037 Toyota 8.0 in. IFS 4.88 Gears

LSA-TGI-310037

Not Yet Reviewed

Part Number: LSA-TGI-310037

Estimated Ship Date: Nov 10, 2026

$279.00

Estimated Ship Date: Nov 10, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
TGI-310037
Part Type:
Product Line:
Summit Racing Part Number:
LSA-TGI-310037
Item Number:
8610119
Differential Case Design Type:
Toyota 8.0 in., IFS
Ring and Pinion Ratio:
4.88:1
Ring Gear Bolts:
10
Pinion Spline Count:
29
Ring Gear Rotation:
Reverse
Ring Gear Diameter (in.):
8.000 in.
Installation Kit Included:
No
Cover Gasket Included:
No
Pinion Shims Included:
No
Carrier Shims Included:
No
Crush Sleeve Included:
No
Pinion Seal Included:
No
Pinion Nut Included:
No
Ring Gear Bolts Included:
No
Head Bearing Included:
No
Tail Bearing Included:
No
Carrier Bearings Included:
No
Axle Seals Included:
No
Axle Bearings Included:
No
Differential Cover Included:
No
Differential Oil Included:
No
Friction Modifier Included:
No
Installation DVD Included:
No
Quantity:
Sold as a set.
Notes:
For Toyota 8.000 in. clamshell front axle. Fits 3.73 and down carriers.

Longfield Ring and Pinion Gears

Longfield ring and pinion gears are the very same 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. They offer superior strength, quiet operation, and durability through high-grade 8620 chromoly steel, precision 5-cut tooth profiling (increasing contact area), and Gleason CNC machining for high accuracy, smoother surfaces, and quieter operation, making them great for daily drivers. All 'standard finish' ring gears are black phosphate coated for wear resistance and corrosion protection. The black phosphate coating provides a microporous layer on the surface to hold lubricants to minimize friction between gear teeth, resulting in less wear during the initial break-in period and increases the overall life expectancy of the gears. Select the gears for your application.

Key features and benefits:

* Strength and durability—made from tough 8620 chromoly steel with a 5-cut tooth profile that distributes load better than standard gears, reducing stress and wear
* Advanced tooth design utilizes a 5-cut process (instead of 2-cut) for a tapered tooth profile, increasing contact area and spreading load for less stress
* Precision-cut using Gleason CNC machines for high accuracy, smoother surfaces, and quieter operation, making them great for daily drivers
* Standard gears have a black phosphate coating to hold lubricant, reducing initial break-in wear and increasing longevity
* Reduced wear and friction—features like black phosphate coating (standard) and REM ISF Super Finish (optional) minimize friction, especially during initial break in, extending gear and bearing life
* Improved 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

 Loading...
 Loading...

Questions & Answers

Ask a Question

What type of question would you like to submit?

I have a Customer Service question
(order, shipping, returns, protection plans, etc.). Customer Service Question
- OR -
I would like to ask other customers
a question about this Product. Product Related Question
 Loading...

Reviews Write a Review

Instructions & Calculators

Instruction Sheets for Part Number LSA-TGI-310037

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.

CA Warning Icon

Cancer and Reproductive Harm -- www.P65Warnings.ca.gov

Email this page