Longfield Ring and Pinion Gears 304509-1-KIT Toyota 8 in. 4.88 Gears

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Part Number: LSA-304509-1-KIT

$319.00

Longfield 29-Spline Toyota 8in Ring & Pinion Gears with 29-Spline Flange Kit - 4.88 High Pinion
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Longfield Ring and Pinion Gears 304509-1-KIT Toyota 8 in. 4.88 Gears

Longfield Ring and Pinion Gears 304509-1-KIT Toyota 8 in. 4.88 Gears

LSA-304509-1-KIT

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Part Number: LSA-304509-1-KIT

Estimated Ship Date: Nov 11, 2026

$319.00

Estimated Ship Date: Nov 11, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
304509-1-KIT
Part Type:
Product Line:
Summit Racing Part Number:
LSA-304509-1-KIT
Item Number:
8610105
Differential Case Design Type:
Toyota 8 in.
Ring and Pinion Ratio:
4.88:1
Cover Bolts:
10
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:
Yes
Pinion Nut Included:
Yes
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 kit.
Notes:
Chromoly pinion flange included.

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

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Instructions & Calculators

Instruction Sheets for Part Number LSA-304509-1-KIT

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