Benefits
- Replaces Stock Gears
- Improves Acceleration
- Complete Installation Kit
Features
- 3.31 Gear Ratio
- Steel Ring & Pinion
- Bearings & Shims
What's in the Box
- (1) 3.31 Pinion Gear
- (1) 3.31 Ring Gear
- (2) Crush Sleeve
- (2) Pinion Nut
- (1) Pinion Bearings
- (1) Pinion & Carrier Shims Set
- (1) Pinion Seal
- (1) Ring Gear Bolts Set
- (1) Carrier Bearings Set
- (1) Gear Marking Compound
- (1) Bottle of Ford Racing Friction Modifier
- (2) Bottles of Royal Purple 75W140 gear oil
2015-2026 Ford 3.31 Gear KitImprove your S550 or S650 Mustang's acceleration and throttle response with a set of Ford 3.31 gears. Featuring heavy-duty steel ring and pinion gears, upgraded bearings and shims, and all of the necessary installation components, this gear kit includes everything needed to complete the job. While these Ford gears do not increase horsepower, they will definitely allow your Mustang to launch harder and quicker!
Ford Racing Friction ModifierThis friction modifier is a specially formulated additive to provide smooth operation of clutch-type limited-slip differentials. 1 bottle of friction modifier is required when changing the gear oil in rear ends equipped with Ford traction-lock units.
Installation Note- Although the Royal Purple gear oil has a friction modifier mixed in, it is still recommended that you use the bottle of Ford Racing friction modifier to supply your Super 8.8" IRS rear end with the proper amount of modifier.
- LMR recommends the 75W140 viscosity for all 2015+ 8.8" differentials as it is appropriate for most climates, fuel economy, and performance.
- 3.15 ratio differential is not compatible with 3.31, 3.55, 3.73, and 4.09 ratio gears. Use differential M-4240-M.
Application- Fits 2015-2026 Mustang w/ Super 8.8" IRS Rear End
Ford Motorcraft Warranty - Click Here
WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov
