1999-04 Ford Mustang 8.8" 31 Spline Heavy Duty Rear Axle Kit 3.73 Gears - New Edge

Mustang 8.8" 31 Spline Heavy Duty Rear Axle Kit 3.73 Gears (99-04)

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  • Mustang 8.8" 31 Spline Heavy Duty Rear Axle Kit 3.73 Gears (99-04)
Mustang 8.8" 31 Spline Heavy Duty Rear Axle Kit 3.73 Gears (99-04)

Beef up your Mustang's 8.8" rear end the right way with this heavy duty rear axle kit from Latemodel Restoration Supply!

Item #LRS-4204SDK-E

Everyday Low Price: $1,089.99

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  • Bullet Proof Your Rear End
  • Optimizes Traction
  • Improves Acceleration


  • Track-Ready Components
  • One Piece Forged Axles
  • 31 Spline
  • FRPP Carbon Clutch Disc Differential
  • Fits 8.8" Rear End

What's in the Box

  • (See Description Below For Components)

Product Description

So, you want to beef up your Mustang's 8.8" rear? How about a kit that gives you EVERYTHING you need to make it bullet-proof? We include everything you need to make your rear axle ready for severe service, be it on the drag strip or the road course!

Kit Includes:
- FRPP Carbon Clutch Disc 31 spline differential M-4204-F318C
- Hardened 31 spline 5 lug axles MOS-9903-31
- High Strength Steel 3" studs MOR-46180
- Ford Racing (FRPP) 3.73 gears M-4209-88373
- FRPP M-4210-B2 bearing kit
- Axle bearing & seal kit AK-1563
- Carrier bearing cap stud kit M-4034-A
- Heavy duty differential support/cover M-4033-G2
- Pinion flange LRS-4851A
- 85W140 Royal Purple synthetic gear oil RP-12303

Due to Hazmat regulations, lubricants/fluids cannot be shipped to APO/FPO addresses.

Product Videos

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

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Customer Reviews

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1 of 1 REVIEWS
1 of 1 REVIEWS

  Almost the perfect kit
By on 5/9/2014
I bought this kit and while everything about it was flawless. It did need some extra pieces that I had to buy that possibly should have come with the kit.

for instance, I needed these after I discovered my ABS rings where completely rusted into place on my old axles. http://www.latemodelrestoration.com/item/LRS-2189A/94-04-Mustang-Rear-Axle-Abs-Reluctance-Tone-Ring which clearly states you should buy these when replaceing your rear axles.

also the lugs are about 1.5" longer than your stock lugs so you will need to buy long lug nuts or in my case some high grade open end lug nuts. I guess the lugs are made for people that run all kinds of positive or negative wheel offset, but still a set of nuts would have been nice to have and would only add about 15 bucks to the kit.

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)

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