Longfield Super Finish 29-Spline Toyota 8” Ring & Pinion Gears

Looking for a Toyota Ring & Pinion that is even stronger than Longfield's Ring & Pinion gears but with ZERO break-in? Longfield's are proud to introduce Longfield Super Finish 29-Spline Ring & Pinion gears. The 29-spline section on the pinion shaft is 7% bigger in diameter than the standard 27-spline pinion shaft, resulting in fewer broken pinion shafts. These are the very same gears that have won multiple championships in professional desert racing & competitive rock crawling circuits and have proven themselves on some of the most grueling off-road courses in the world.

What makes Longfield Ring & Pinion Gears the best on the market?

Better Materials: Longfield use heat-treated 8620 chromoly tool steel for strength and wear resistance.

Better Gear Teeth: Longfield only use the 5-cut process on the ring gear teeth instead of the cheaper 2-cut process used by most other aftermarket vendors. The 5-cut process results in teeth with a tapered tooth profile. This increases contact area and spreads the contact load along a wider area, resulting in less stress on the ring gear teeth.

Better Machining: The gear teeth are cut using Gleason CNC hobbing machines & cutters. Gleason gear-cutting technology produces an unprecedented level of accuracy and surface finish, which allows the gears to transmit more torque and improve fuel efficiency. The higher accuracy and surface finish also produces a quieter-running gear set, which means they will work great on the daily driver too.

Better Finish: Longfield's Super Finish gears allow you to skip the break-in period and get on the trail now! The aerospace-grade REM® Isotropic Super Finishing (ISF ®) process removes the microscopic peaks in the material and creates a surface on the ring and pinion gears with a roughness of less than 10 µin average surface roughness. This means that there is less friction between the gears, reducing wear by 95% and allowing the gears and bearings to run cooler and last longer.

Better Value: Longfield go directly to Tier 1 OEM manufacturers to have gears made to Longfield's exact specifications. By cutting out the middlemen, Longfield can offer the highest quality gears at a competitive price.

On Toyota trucks Longfield recommend 4.88's for 33" tires and 5.29 for 35" and larger.

Specifications:

• Made from tool-grade 8620 steel and heat-treated for maximum strength and wear resistance.
• The gear teeth are cut using Gleason CNC hobbing machines & cutters. Gleason gear-cutting technology produces an unprecedented level of accuracy and surface finish, which allows the gears to transmit more torque and improve fuel efficiency.
• Higher accuracy and surface finish also produces a quieter-running gear set.
• Gear teeth are cut using the 5-cut process to increase contact area to reduce load distribution and reduce stress on the gear teeth.
• No break-in period.
• Less friction.
• Reduced wear allowing bearings and gears to last longer.
• Treated with REM® Isotropic Super Finishing (ISF) process.
• The REM® Isotropic Super Finishing (ISF) process removes the microscopic peaks in the material and creates a surface on the ring and pinion gears with a roughness of less than 10 µin Ra! This means that there is less friction between the gears, reducing wear by 95% and allowing the gears and bearings to run cooler and last longer.
• Non-directional surface that increases lubricant retention on the gear surface, reducing lubrication requirements.
• Pinion Spline: 29-Spline
• Ring Gear Bolts: 10 bolts (Ring Gear Bolts not included)
• Ring Gear Diameter: 8”
• Ring Gear Rotation (4-Cyl & V6): Standard
• Ring Gear Rotation (Hi-Pinion): Reverse

Fitment:

• 1979-1985 Toyota Pickup - Front & Rear, Requires 29-Spline Diff Flange, Nut & Seal, 4-CYL & V6
• 1986-1995 Toyota Pickup - Rear Only, Requires 29-Spline Diff Flange, Nut & Seal, 4-CYL & V6
• 1984-1985 Toyota 4Runner - Front & Rear, Requires 29-Spline Diff Flange, Nut & Seal, 4-CYL & V6
• 1986-1995 Toyota 4Runner - Rear Only, Requires 29-Spline Diff Flange, Nut & Seal, 4-CYL & V6
• 1979-1985 Toyota Pickup - Front Only, Requires Hi-Pinion Housing, 29-Spline Diff Flange, Nut & Seal, HI-PINION
• 1984-1985 Toyota 4Runner - Front Only, Requires Hi-Pinion Housing, 29-Spline Diff Flange, Nut & Seal, HI-PINION
• 1990-1997 Toyota Land Cruiser FJ80 - Front Only, Requires 29-Spline Diff Flange, Nut & Seal, HI-PINION
• 1991-1997Lexus LX450 - Front Only, Requires 29-Spline Diff Flange, Nut & Seal, HI-PINION

Notes:

• Will not fit 7.5" IFS front axles or 8” IFS Clamshell front axles.

Compatible Lockers