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Call Keisler at 1-865-609-8187 to speak with a transmission specialist to get pricing and order Keisler transmissions.


Why Can't I Order A Transmission Online?
At Keisler, we are committed to order accuracy, and with the complex nature of making sure that your transmission and kit components match your car and performance needs, speaking with one of our transmission specialists is currently the best way to ensure you recieve the right products.


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The Keisler ClassicFit" Kit is the most economical way to put a high strength, modern overdrive Tremec TKO 5-speed in your Mustang. Our ClassicFit" Kits contain all the same high-quality components as our PerfectFit systems, but with an unmodified transmission. Enjoy a 5-Speed System with low RPM cruising, and great fuel economy today.

NEW!  Keisler ClassicFit™ Offset Shifter is now available! It provides the same correct shift lever attachment point as our premium PerfectFit™ series, but in a lower cost "bolt on" package. Modification of the 4-speed shifter hole is required for some applications. (Note: If you desire a little-to-no mod installation, please see our PerfectFit™ series of transmission systems).



Keisler ClassicFit™ Kits: TKO
1964-1973 Mustang 5-Speed ClassicFit™ Kit - TKO-500

Keisler's ClassicFit™ Kit is the most economical way to install a high strength, modern 5-speed overdrive manual transmission in your Mustang/Cougar. Contains the same items as our PerfectFit™ kit, but without the customized transmission.
[Product Details...]

For Pricing:
Call or
Request a Quote


1964-1973 Mustang 5-Speed ClassicFit™ Kit - TKO-500-Auto

Keisler's ClassicFit™ Kit is the most economical way to install a high strength, modern 5-speed overdrive manual transmission in your Mustang/Cougar. Contains the same items as our PerfectFit™ kit, but without the customized transmission.
[Product Details...]

For Pricing:
Call or
Request a Quote


1964-1973 Mustang 5-Speed ClassicFit™ Kit - TKO-600(.64)

Keisler's ClassicFit™ Kit is the most economical way to install a high strength, modern 5-speed overdrive manual transmission in your Mustang/Cougar. Contains the same items as our PerfectFit™ kit, but without the customized transmission.
[Product Details...]

For Pricing:
Call or
Request a Quote


1964-1973 Mustang 5-Speed ClassicFit™ Kit - TKO-600(.64)-Auto

Keisler's ClassicFit™ Kit is the most economical way to install a high strength, modern 5-speed overdrive manual transmission in your Mustang/Cougar. Contains the same items as our PerfectFit™ kit, but without the customized transmission.
[Product Details...]

For Pricing:
Call or
Request a Quote


1964-1973 Mustang 5-Speed ClassicFit™ Kit - TKO-600(.82)

Keisler's ClassicFit™ Kit is the most economical way to install a high strength, modern 5-speed overdrive manual transmission in your Mustang/Cougar. Contains the same items as our PerfectFit™ kit, but without the customized transmission.
[Product Details...]

For Pricing:
Call or
Request a Quote


1964-1973 Mustang 5-Speed ClassicFit™ Kit - TKO-600(.82)-Auto

Keisler's ClassicFit™ Kit is the most economical way to install a high strength, modern 5-speed overdrive manual transmission in your Mustang/Cougar. Contains the same items as our PerfectFit™ kit, but without the customized transmission.
[Product Details...]

For Pricing:
Call or
Request a Quote


T45RS-350 Essentials Kit (350 LB-FT)

For the budget-minded enthusiast that doesn't require the extra strength of the TKO, we offer the T45RS-350 as a lower cost alternative. The Essentials Kit contains all the basic parts required to install into your GM, Ford, or Mopar vehicle.
[Product Details...]

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T45RS-425 Essentials Kit (425 LB-FT)

For the budget-minded enthusiast that doesn't require the extra strength of the TKO, we offer the T45RS-425 as a lower cost alternative. The Essentials Kit contains all the basic parts required to install into your GM, Ford, or Mopar vehicle.
[Product Details...]

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T56 MAGNUM 6-Speed 2.66/0.63 Essentials Kit, Mech.

TREMEC T56 MAGNUM Essentials Kit contains all the basic items required to install a new high-strength, modern T56 MAGNUM double overdrive 6-speed in your vehicle. Optional Offset Shifter and Front Shift Relocation kits available soon.
[Product Details...]

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T56 MAGNUM 6-Speed 2.97/0.50 Essentials Kit, Mech.

TREMEC T56 MAGNUM Essentials Kit contains all the basic items required to install a new high-strength, modern T56 MAGNUM double overdrive 6-speed in your vehicle. Optional Offset Shifter and Front Shift Relocation kits available soon.
[Product Details...]

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TKO-500 5-Speed Essentials Kit

TREMEC TKO500 Essentials Kit contains all the basic items required to install a new high-strength, modern TKO500 overdrive 5-speed in your car. Optional Keisler ClassicFit™ Offset Shifter mimics the factory shift position.
[Product Details...]

Call to Get Quote

TKO-600 (.64) 5-Speed Essentials Kit

TREMEC TKO600 Essentials Kit contains all the basic items required to install a new high-strength, modern TKO600 overdrive 5-speed in your vehicle. Optional Keisler ClassicFit™ Offset Shifter mimics the factory shift position.
[Product Details...]

Call to Get Quote

TKO-600 (.82) 5-Speed Essentials Kit

TREMEC TKO600 Essentials Kit contains all the basic items required to install a new high-strength, modern TKO600 overdrive 5-speed in your car. Optional Keisler ClassicFit™ Offset Shifter mimics the factory shift position.
[Product Details...]

Call to Get Quote


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Call for Pricing

Call our Sales Staff at 1-865-609-8187 to speak with a transmission specialist to get pricing and order Keisler transmissions.


Why Can't I Order A Transmission Online?
At Keisler, we are committed to order accuracy, and with the complex nature of making sure that your transmission and kit components match your car and performance needs, speaking with one of our transmission specialists is currently the best way to ensure you recieve the right products.


Click here to close