1986-09 Ford Mustang Ford Racing 8.8" 3.55 Ratio Rear End Gear Kit by Ford Racing

Mustang Ford Racing 8.8" 3.55 Ratio Rear End Gear Kit (86-09)

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  • Ford Racing Mustang 8.8" 3.55 Ratio Rear End Gear Kit (86-09)
Mustang Ford Racing 8.8" 3.55 Ratio Rear End Gear Kit (86-09)

A Ford Racing 86-09 Mustang 3.55 rear end gear kit can help improve acceleration for quicker ET's.

Item #LRS-4209FRA-K

Everyday Low Price: $259.99

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  • Improved Acceleration
  • Eliminates Guesswork
  • Everything You Need To Do The Job Right


  • Royal Purple Gear Oil Virtually Eliminates Wear
  • Friction Modifier Provides Smooth Operation & Prevents Chatter

What's in the Box

  • (1) 3.55 Ring/Pinion Set
  • (1) Bottle Friction Modifier
  • (2) Bottles Royal Purple Gear Oil
  • (1) Gear Install/Shim Kit

Product Description

Here Latemodel Restoration Supply we know what it takes to install a new set of rear end gears into your Mustang, so we put it all together for you to take out all of the guesswork!

Not only do we include the hardware (rear end gears, bearings, shims), but we also include all of the software (gasket, seals, marking compound, gear oil, friction modifier) needed to do the job the right way!

Ford Racing rear end/ring and pinions gears improve acceleration and performance on your Mustang or Cobra! When its time to replace your stock gears go with the best! Trust the proven name, use Ford Racing’s heavy duty rear axle ring and pinion set. Pinion nut included.

Royal Purple Max-Gear gear oil is an ultra-tough automotive gear oil. It’s designed to maximize power and provide unsurpassed protection to heavily loaded gears. It makes gears run smoother, quieter, cooler and longer without overhauls. Max-Gear outperforms other gear oils because it combines the highest quality synthetic oils with Royal Purple’s proprietary Synslide additive technology.

Ford Racing 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.

Now, everything you need to install rear gears in one package! Kit includes:
1 FRPP 3.55:1 gearset
1 FRPP M-4210-B2 bearing kit (includes GT500 pinion bearing, carrier bearings, pinion seal, ring gear bolts, pinion nut, crush sleeve, shims, and marking compound)
1 bottle of Friction Modifier
2 bottles of Royal Purple 75W90 gear oil

**Although the Royal Purple gear oil contains friction modifier, we highly recommend including the Ford Racing friction modifier along with the gear oil when refilling your rear end.**

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

See what our customers have to say about this product!
Check out customer reviews and questions.

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!


Community Q&A (2)

Product Reviews (7)

out of 5 stars
5 stars
7 reviews
5 stars    6
4 stars    1
3 stars    0
2 stars    0
1 star    0

7 of 7 REVIEWS
7 of 7 REVIEWS

5 Stars   3.55 gears
By on 10/10/2014
Got these gears to rebuild the diff on my 92 lx. Great all around gears for daily driving. If you're looking to upgrade gears without messing up your mpg then 3.55 is a good way to go. It really makes a noticeable difference when you get on the gas.

Yes, I would recommend this item to a friend!

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5 Stars   Good Deal and Quality Parts
By on 8/11/2014
Noticed this kit has Lots of Ford Racing parts where others may be a mix. 3rd and 4th are more useful. First is shorter and 5th is about 2500 rpm at 65 mph

Yes, I would recommend this item to a friend!

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5 Stars   nice sound
By on 10/10/2014
Had my rears changed on my 92 lx convertable from a 2.73 to 3.55. Love everything from the wine of the rears to the increased reponse...had a local transmission shop install it for me since it is out of my scope of practice....i would definitely recommend. ..

Yes, I would recommend this item to a friend!

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5 Stars   3.55 rear gears
By on 5/2/2014
Just had my new 3.55 gears installed and I love them. Good quality parts.

Yes, I would recommend this item to a friend!

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4 Stars   Not a bad little kit for doing a gear swap!
By on 12/16/2014
This kits gives you almost everything you need to do a proper gear swap. The only thing I would ask for are:

1) more gear marking compound. This kit came with very little, no brush and it was all dried out so I ended up ordering a Jegs gear marking compound kit elsewhere

2) I would have liked a better selection of different carrier barring shims. The kit has a decent assortment from 0.008 - .025" but it would be nice to have a few thinner ones as well. When you are trying to bring in backlash by a 0.003-0.004", 0.008 or too big of a shim and you end up having to mix and match combinations of larger and smaller shims too much.

Other than that the kit was well put together. It would be totally complete if axle bearings and seals were included as well (why not replace those when you are basically rebuilding everything else??)

I'll buy this kit again for my next 8.8 gear swap.

Yes, I would recommend this item to a friend!

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5 Stars   great price and great product
By on 12/27/2014
they take alot of the guess work out when you buy this kit. has everything you need to get the job done. i added some wheel bearings to my order and replaced those as well. plus the added bonus of the instructional video was awesome. i watched it a bunch and it gave me the knowledge and confidence to do the job myself. If you haven't installed gears before i highly recommend at least giving it a try once.

Yes, I would recommend this item to a friend!

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5 Stars   Rear gears
By on 3/9/2015
I received the 3.55 rear gears and with the help of a few friends, installed them the next day. Perfect for this car, all the parts needed for installation were in the box.
Thanks guys.

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93) - 1994 (94) - 1995 (95) - 1996 (96) - 1997 (97) - 1998 (98) - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04) - 2005 (05) - 2006 (06) - 2007 (07) - 2008 (08) - 2009 (09)

About This Brand

Ford Racing
Ford Racing - Mustang Ford Racing Parts
Ford Racing is the leader in performance parts and accessories for Mustang and Ford Lightning.

LatemodelRestoration.com is proud to offer Ford Racing Performance Parts for your project. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. Choose from suspension, exhaust, wheels, and other performance parts at LatemodelRestoration.com. If you want the best for your Mustang or SVT Ligtning, look no further than Ford Racing Performance Parts!

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