1979-95 Ford Mustang Tremec TKO600 Transmission – Extra HD by Ford Performance

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Ford Racing Mustang Tremec TKO600 Transmission (79-95) M-7003-R58H

Beef up your drivetrain with this 1979-95 Mustang TKO600 transmission from Tremec transmissions!

Item #LRS-TKO600A
MPN# M-7003-R58H

Your Price: $2,449.99

Market Price:$2,544.95
You Save 3.73 % ($94.96)

  Ships from supplier by Monday, January 29

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This item ships via UPS Truck Freight shipping!
Orders containing truck freight items incur a one-time $80 shipping fee.


  • Handles More Power Than Stock
  • 600lbs/ft. Torque Capacity


  • 4615 Steel Gears
  • 1 Piece Counter-Shaft
  • Close Ratio 1st-4th Gear

What's in the Box

  • (1) Transmission w/ Shifter Base

Product Description

Tremec 5-Speed Extra HD Transmission
Ensure your Mustang can handle all the power it's putting down with this Tremec TKO600 transmission! The M-7003-R58H is equipped with a 26 spline input shaft and a 31 spline output shaft. Designed to be a replacement of the earlier model TR-3550, the TKO has been significantly upgraded, making it more robust, flexible and versatile. The TKO600 is ideal for high-performance racing applications. The TKO 600 will require the (M-6392-R50) Ford Racing bellhousing, a (M-4841-A) Ford Racing 31 spline driveshaft yoke and a 10.5" clutch disc (M-7550-T302) that is designed for the use with a 26 spline input shaft. This is a perfect upgrade for any Fox Body Mustang, SN95 Mustang or New Edge Mustang!

TKO600 Gear Ratios
1st 2.87
2nd 1.90
3rd 1.34
4th 1.00
5th 0.68.

TKO600 Features
-Higher center distance (83 mm) from main shaft to counter shaft allows for larger gear sizes and higher torque carrying capacity.
-Robust five speed transmission design with internal 3-rail shift system with cast iron shift forks.
-Tapered roller bearings on input, output and counter shafts improve performance (reduced noise factor).
-All gears and shafts made from special grade steel (ASTM 4615) that permits increased torque carrying capacity.
-Single-piece countershaft that better handles increased torque carrying capacity.
-Tremec 5 speed transmission is equipped with a high-performance short-throw billet aluminum shifter that isolates road noise, while providing clean crisp shifts.
-Neutral safety switch and back-up light sensor.
-Dual electronic and mechanical speedometer pick-ups.
-7 tooth internal drive gear

Shifter Note
You will need to either transfer your factory shift handle and shift ball or pick up a new set!

Installation Note
- Input shaft is 26 spline
- Output shaft is 31 spline
- Ford Racing TKO 600 requires bellhousing M-6392-R58 to install in a 1979-95 Mustang
- Ford Racing TKO 600 requires M-5059-A crossmember to fit in a 1979-93 Mustang
- Ford Racing TKO 600 requires you to modify the vehicle crossmember, lengthen driveshaft .625" to fit in a 1994-95 Mustang

-Fits 1979-2004 Ford Mustang

TREMEC Transmission Limited Warranty - Click Here

See what our customers have to say about this product!
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Customer Photos (1)

Product Reviews (4)

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3 of 3 REVIEWS
3 of 3 REVIEWS

5 Stars   TKO 600
By on 1/15/2014
Image uploaded by Scott M Just ordered this TKO 600 From Latemodel Restoration and could not be happier with how quickly it got to me. Arrived on a freight truck with no issues and got here in just a few days. Ordering was simple and easy and could not be happier with the service from Latemodel and team. Will be using them again!

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By on 3/10/2017
First off I debated on a TKO or a TR3650 Swap...Even though the 3650 is an OEM trans and it can hold a little more power then a TKO, I still went with the TKO and heres why.

1. Support for TKO is everywhere, Cross members, bell housings, drive shafts etc.. you can literally get at any performance place.. obviously i stick with LMR.
2. Currently only a couple of companies make the custom adapter to run a 3650 in a fox. So limited support..
3. the factory 5.0 block limit is around 500 hp.. the TKO is set for 600.. the 3650 can do around 700.. which is a mute point.
4. a 3650 swap requires cross member mods, drive shaft mods etc.. the TKO you can buy direct bolt in replacements...
5. The 3650 swap ends up being almost the exact same price as a TKO.
6. The TKO just has proven the test of time and support.

Was purchased and delivered to my door step by semi with a lift gate in 4 days.
I got luckie and my driver was cool and def a car guy. He helped my carry it to my garage!

Packaging was perfect.
And FYI - If you register your TKO with Tremec, you get a FREE shifter knob. Its a choice of black, white, polished, or brushed look. Tremec states to allow 4-6 weeks for delivery, but mine was delivered in a week. (it also came with 4 different adapters to fit most threads)

I will post a 2nd review soon when I get it installed, and beat the crap out of it to see how will it really works!. It will be gong behind a 347 with Trick flow top end and the new 11R heads.

Yes, I would recommend this item to a friend!

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5 Stars   most beautiful thing I ever seen
By on 9/1/2014
This tko 600 shipped from the vendor and got to my house same day as my bell and yoke from late models warehouse. Absolutely impressed these guys know what their doing

Yes, I would recommend this item to a friend!

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5 Stars   Fast!
By on 11/19/2014
I ordered the TKO600 Sunday night I received it Wednesday!! Very good service as always with these guys!!

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1979 (79) - 1980 (80) - 1981 (81) - 1982 (82) - 1983 (83) - 1984 (84) - 1985 (85) - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93) - 1994 (94) - 1995 (95)

About This Brand

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

LMR.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 Performance Parts!

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