Longfield 29-Spline Toyota 8” Ring & Pinion Gears
Longfield 29-Spline Toyota 8” Ring & Pinion Gears
Looking for a Toyota Ring & Pinion that is even stronger than our Longfield Ring & Pinion gears? We are proud to introduce Longfield 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: We use heat-treated 8620 chromoly tool steel for strength and wear resistance.
Better Gear Teeth: We 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: All Standard Finish ring gears are black phosphate coated for wear resistance & corrosion protection. The black phosphate coating provides a microporous layer on the surface to hold lubricants to minimize friction between gear teeth. This results in less wear during the initial break-in period and increases the overall life of the gears.
Better Value: We go directly to Tier 1 OEM manufacturers to have gears made to our exact specifications. By cutting out the middlemen, we can offer the highest quality gears at a competitive price.
On Toyota trucks we recommend 4.88's for 33" tires and 5.29 for 35" and larger.
RING & PINION BREAK-IN PROCEDURE
All new 3rd members require a break-in period to prevent damage from overheating. Any overloading or overheating during these periods can cause the gear oil to break down resulting in ring & pinion failure.
- After installation drive lightly for 20-30 minutes and then allow the diff to cool for at least two hours.
- Avoid heavy throttle use during the first 500 miles.
- Do not tow a trailer during the first 500 miles.
- Change oil after 500 miles to remove any particles suspended in the oil.
This may seem unnecessary, but it is very easy to damage the differential by loading it before the gear set is completely run in. New ring & pinion gears create excess heat when they are new. This excess heat can damage the heat treatment of the gears.
AVAILABLE OPTIONS:
304111-1 - Longfield 29-Spline Toyota 8” Ring & Pinion Gears - 4.88 | 4cyl
304112-1 - Longfield 29-Spline Toyota 8” Ring & Pinion Gears - 5.29 | 4cyl
303928-1 - Longfield 29-Spline Toyota 8” Ring & Pinion Gears - 4.88 | V6
303929-1 - Longfield 29-Spline Toyota 8” Ring & Pinion Gears - 5.29 | V6
304256-1 - Longfield 29-Spline Toyota 8” Ring & Pinion Gears - 4.88 | High Pinion
304257-1 - Longfield 29-Spline Toyota 8” Ring & Pinion Gears - 5.29 | High Pinion
COMPATIBLE LOCKERS
|
Part Number |
Description |
ARB |
Detroit |
TrueTrac |
Grizzly |
Zip |
Spool |
|
304111-1 |
Longfield 29-Spline Toyota 4-Cyl 8” Ring & Pinion Gears - 4.88 |
ARB-RD132 |
EAT-70752 |
EAT-TT70P52889 |
YGA-28019 |
YGA-34033 |
140163-1 |
|
304112-1 |
Longfield 29-Spline Toyota 4-Cyl 8” Ring & Pinion Gears - 5.29 |
ARB-RD132 |
EAT-70752 |
EAT-TT70P52889 |
YGA-28019 |
YGA-34033 |
140163-1 |
|
303928-1 |
Longfield 29-Spline Toyota V6 8” Ring & Pinion Gears - 4.88 |
ARB-RD132 |
EAT-70985 |
EAT-TT70P52888 |
YGA-28020 |
YGA-34034 |
140164-1 |
|
303929-1 |
Longfield 29-Spline Toyota V6 8” Ring & Pinion Gears - 5.29 |
ARB-RD132 |
EAT-70985 |
EAT-TT70P52888 |
YGA-28020 |
YGA-34034 |
140164-1 |
|
304256-1 |
Longfield 29-Spline Toyota Hi-Pinion 8” Ring & Pinion Gears - 4.88 |
ARB-RD132 |
EAT-70985 |
EAT-TT70P52888 |
YGA-28020 |
YGA-34034 |
N/A |
|
304257-1 |
Longfield 29-Spline Toyota Hi-Pinion 8” Ring & Pinion Gears - 5.29 |
ARB-RD132 |
EAT-70985 |
EAT-TT70P52888 |
YGA-28020 |
YGA-34034 |
N/A |
WARNING - Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- 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.
- Black phosphate coating on ring gear to reduce friction & wear during break-in.
- 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
4-CYL & V6
| TOYOTA PICKUP - Front & Rear, Requires 29-Spline Diff Flange, Nut & Seal (1979-1985) 1979 Toyota Pickup 1980 Toyota Pickup 1981 Toyota Pickup 1982 Toyota Pickup 1983 Toyota Pickup 1984 Toyota Pickup 1985 Toyota Pickup |
TOYOTA PICKUP - Rear Only, Requires 29-Spline Diff Flange, Nut & Seal (1986-1995) 1986 Toyota Pickup 1987 Toyota Pickup 1988 Toyota Pickup 1989 Toyota Pickup 1990 Toyota Pickup 1991 Toyota Pickup 1992 Toyota Pickup 1993 Toyota Pickup 1994 Toyota Pickup 1995 Toyota Pickup |
| TOYOTA 4RUNNER - Front & Rear, Requires 29-Spline Diff Flange, Nut & Seal (1984-1985) 1984 Toyota 4Runner 1985 Toyota 4Runner |
TOYOTA 4RUNNER - Rear Only, Requires 29-Spline Diff Flange, Nut & Seal (1986-1995) 1986 Toyota 4Runner 1987 Toyota 4Runner 1988 Toyota 4Runner 1989 Toyota 4Runner 1990 Toyota 4Runner 1991 Toyota 4Runner 1992 Toyota 4Runner 1993 Toyota 4Runner 1994 Toyota 4Runner 1995 Toyota 4Runner |
HI-PINION
| TOYOTA PICKUP - Front Only, Requires Hi-Pinion Housing, 29-Spline Diff Flange, Nut & Seal (1979-1985) 1979 Toyota Pickup 1980 Toyota Pickup 1981 Toyota Pickup 1982 Toyota Pickup 1983 Toyota Pickup 1984 Toyota Pickup 1985 Toyota Pickup |
TOYOTA 4RUNNER - Front Only, Requires Hi-Pinion Housing, 29-Spline Diff Flange, Nut & Seal (1984-1985) 1984 Toyota 4Runner 1985 Toyota 4Runner |
| TOYOTA LAND CRUISER FJ80 - Front Only, Requires 29-Spline Diff Flange, Nut & Seal (1990-1997) 1990 Toyota Land Cruiser FJ80 1991 Toyota Land Cruiser FJ80 1992 Toyota Land Cruiser FJ80 1993 Toyota Land Cruiser FJ80 1994 Toyota Land Cruiser FJ80 1995 Toyota Land Cruiser FJ80 1996 Toyota Land Cruiser FJ80 1997 Toyota Land Cruiser FJ80 |
LEXUS LX450 - Front Only, Requires 29-Spline Diff Flange, Nut & Seal (1991-1997) 1991 Lexus LX450 1992 Lexus LX450 1993 Lexus LX450 1994 Lexus LX450 1995 Lexus LX450 1996 Lexus LX450 1997 Lexus LX450 |
NOTE: Will not fit 7.5" IFS front axles or 8” IFS Clamshell front axles.
Download installation instructions here.
Installation InstructionsAll products carry our 12 Month Limited Warranty. All warranties are limited to the original purchaser and are not transferable to subsequent owners of the product. The warranty period begins on the purchase date. Trail-Gear warrants that it will repair or replace, free of charge, any eligible product which, under normal conditions of use and service, proves to be defective in materials or workmanship. This warranty does not cover any labor costs incurred in diagnosis of defects, removal or reinstallation of a product, nor does it cover any other consequential expenses.
Please read and review our return and warranty requirement document before sending in products.
Warranty Exclusions
Trail-Gear Inc. warranty does not cover, and Trail-Gear Inc. shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Trail-Gear products, except where such agreements are within the provisions of this Warranty.
Specifically excluded from this warranty are failures caused by lack of maintenance, misuse, negligence, modification, abuse, improper application, crash damage, installation or operation, or failures caused by unauthorized service or use of unauthorized parts.
Additionally excluded from this warranty are parts that are subject to normal wear and tear, such as bushings, fluids, hoses, gaskets, belts, etc. Products not manufactured by Trail-Gear Inc. are excluded from any warranty and shall be handled with the original manufacturer.
All parts used in a competitive racing environment are excluded from this warranty. If, after inspection, a part returned, under any warranty, is deemed to be ineligible for warranty repair or replacement, the part may be repaired or replaced for a discounted cost. Return shipping charges will apply. Any part for which a warranty replacement is sought must be returned to Trail-Gear Inc. before any replacement items can be shipped. All replacement parts shipped before the suspect part has been received and evaluated by Trail-Gear, MUST BE PAID IN FULL. In such a case, after the suspect part has been received and approved for a warranty replacement, the purchase price for the replacement will be refunded.
Axle/Birfield/CV Joint Warranty Disclaimer
Axle and Birfield/CV joints are warranted by the Trail-Gear Family of Companies for mechanical failures (e.g. breakage) only to the original purchaser. Proof of purchase is required for all warranty claims. Trail-Gear Family of Companies reserves the right to deny any claim if the product is shown to be incorrectly installed or the subject of collateral damage of surrounding components. Trail-Gear Family of Companies is not responsible for any collateral damages to any components caused by or related to a Trail-Gear Family of Companies product. Trail-Gear Family of Companies is not responsible for any shop/labor hours related to the installation or replacement of Trail-Gear Family of Companies product.
All warranty claims are subject to review and acceptance at the sole discretion of the Trail-Gear Family of Companies and may require the return of parts at the customer's expense for warranty review. Parts that are rejected for warranty coverage will be shipped back to the customer at the customer’s expense or scrapped after 10 business days.
For Axle and Birfield/CV joints with Lifetime Warranty, Lifetime Warranty means one-time replacement within the lifetime of originally purchased product only to the original purchaser.
The warranty does not cover the following conditions:
- Normal wear and tear
- Noise
- Twisted shafts
- Twisted splines
- Bent axles
- Stripped threads
- Modification of the product
- Intentional or willful destruction of the product
- Failures from improper installation or storage
- Failures from other than the intended use
- Please contact Trail-Gear Inc. at 559-252-4950 or email sales@trail-gear.com prior to returning any product under warranty to verify that warranty is still in effect.
- Products must be shipped back to Trail-Gear Inc. at the expense of the customer. Ship all products to:
- ATTN: WARRANTY
- 5356 E. Pine Avenue
- Fresno, CA 93727.
- Please place a clearly marked copy of the original invoice inside the package.
- Please include a short note stating the problem you are experiencing.
If any of the above mentioned policy is not met, the package will be refused or warranty claim denied. By completing the steps above, this will ensure faster processing of your claim so that Trail-Gear can get your product back to you as quickly as possible. All warranties are generally processed within 2-3 business days of Trail-Gear receiving the parts from you. Additional delays may be incurred if product needs additional testing or repairing.
If you are an international customer, please email the warranty department at sales@trail-gear.com to receive further instruction. International customers may have the option to field destroy an approved warranty to avoid costly return shipping. In this case, any shipping charges for replacement parts will be at the expense of the customer.
