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1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive by Tremec


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1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive
1979-2004 Mustang Tremec TKX Transmission - 10 Spline - .72 Overdrive

Bulletproof your drivetrain with Tremec's 1979-2004 Mustang 10 spline TKX transmission with .72 ratio overdrive!

Item #LRS-18086
MPN# TCET 18086

Everyday Low Price: $2,945.00

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Weight: 120 lbs
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*Total ship weight includes packaging and may not reflect product-only weight and/or dimensions.


 Benefits

  • Extreme Durability
  • Optimized Gear Layout
  • 600lb-ft Torque Capacity
  • 8000 RPM Shifting Capability
  • Provides Smooth, Superior Shift-Ability

 Features

  • Wide Gear Ratio
  • 10 Spline Input Shaft
  • 31 Spline Output Shaft
  • Multi-Cone Synchronizers
  • 7 Tooth Internal Drive Gear

 What's in the Box

  • (1) Tremec 5-Speed TKX Transmission

Mustang Tremec TKX Transmission

Ensure your transmission can handle the extra power your engine puts down with this 1979-2004 Mustang Tremec TKX transmission! Designed to be the successor to the TKO transmission, the TKX features triple cone synchronizers with a non-leading tooth profile (taken from the T56) to eliminate the notchy feeling the TKO had. With the provided billet aluminum, short-throw shifter you'll experience buttery smooth shifts all the way up the extended RPM range! The TKX is capable of 8,000 RPM engine speeds with shifts at 7,500 RPMs. An updated end loading design provides improved strength along with a new case for increased tunnel clearance making fitment issues a thing of the past. This TKX has the .72 overdrive 5th gear which is ideal for cars that see regular highway use. Built to handle 600lb/ft of torque, this is the next generation of performance transmission.

Tremec Quality

Utilizing the highest-quality materials, this TKX transmission is durable and built to last. The synchronizers are built with a sintered bronze and carbon material that provide smooth shifts without sacrificing strength. Tremec optimized the gear layout to control stress levels and NVH, while providing structural stiffness with a ribbed 3-piece housing. A 7.2" length, 10-spline input shaft is combined with a 31-spline output shaft for added strength. Each gear is made with a high-grade steel (ASTM 4615) which results in the 600lb/ft torque capacity. Tremec uses tapered roller bearings on every shaft along with a caged needle bearing on the main shaft to reduce noise. To further optimize durability, oversized gear widths are used, along with gaskets at all flanges. The TKX will hold 2.7 quarts of manual transmission fluid. All of these improvements and more provide you a bulletproof transmission that's built to handle anything you throw at it!

TKX Gear Ratios

  • 1st - 3.27
  • 2nd - 1.98
  • 3rd - 1.34
  • 4th - 1.00
  • 5th - 0.72


Transmission Note

  • Input shaft is 10 spline
  • Output shaft is 31 spline
  • For all TKX 5-speed models, TREMEC recommends TREMEC High-Performance Manual Transmission Fluid (HP-MTF™), Dexron-III, GM Synchromesh™, Mobil 1 Synthetic ATF, or Pennzoil® Synchromesh.
  • Fluid capacity is 2.7 quart
  • You will need to either transfer your factory shift handle and shift ball or pick up a new set!
  • Machining marks on transmission mount boss may be present.


Application

  • Fits 1979-2004 Ford Mustang (See Fitment Notes Tab)


TREMEC Transmission Limited Warranty - Click Here

  • Ford Mustang - 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004

1979-1995 - 5.0L

1996-1998 - 4.6L

  • 1994-1998 Mustang V8 requires cross member STF-TCBM03
  • Bellhousing M-6392-M46 or RM-6081
  • Drive Shaft Spacer may be necessary
  • 10 Spline Clutch for TKX 10 Spline input shaft

1999-2004 - 4.6L

  • Crossmember STF-TCBM20
  • Bellhousing M-6392-M46 or RM-6081
  • Speed pickup conversion for mechanical speed pickup to electrical. 
  • Drive Shaft Spacer may be necessary
  • 2003-2004 Cobra would require 31 Spline Driveshaft M4602J
  • 2003-2004 Cobra would have to convert the pinion flange with the driveshaft
  • 10 Spline Clutch for TKX 10 Spline input shaft

The All-New TREMEC TKX

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!

  • Mustang Tremec TKX Transmission Swap Guide

    Adding power to any car is a hassle to put the power to the wheels through the stock transmission. That is why many turn to the Mustang TKX Swap, follow along and we will guide you on all of the needed steps for this swap. more

    Read more: 79 93 mustang , 94 04 mustang , transmission , tkx , driveline , mustang coyote swap , tech guide

    Posted on 4/20/2022


  • California Residents:
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    About This Brand


    Tremec
    Tremec is one of the industry leading manufacturers of performance manual transmissions. They have spent years researching and developing the highest quality torque transfer solutions. Tremec provides world class products to the global automotive and industrial markets. With a wide range of Tremec transmissions available for the Ford Mustang, Latemodel Restoration is proud to offer the Tremec Magnum XL 6 speed transmission!

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