American Powertrain TKX Pro-Fit 5-Speed 10-Spline .72OD Kit W/Offset F-100 61-79

Upgrade your 1961–1979 F-100 with this combo kit (COFO-T1AX) for better performance, efficiency, and drivability. This bolt-in solution features a wide-ratio TKX transmission with a 0.72 overdrive. It offers 30–50% better fuel economy, reduced engine wear, and lower cruising RPMs. The 2.25” offset shifter ensures ergonomic placement for comfortable shifting. The kit uses factory mounting points and includes everything needed for a complete transmission overhaul.

Features and Benefits:
- Wide ratio: 1st 3.27, 2nd 1.98, 3rd 1.34, 4th 1.00, 5th 0.72 OD
- Wide ratio gearbox provides excellent street and highway drivability
- 30–50% better fuel economy
- 0.72 overdrive for reduced RPMs
- 2.25” AP Revolution shifter offset
- Reduces noise, vibration, and harshness
- Extends engine life with lower wear
- Cooler engine operating temperatures
- Bolt-in crossmember uses factory holes
- Includes driveshaft slip yoke and hardware
- Durable polyurethane isolator mount
- Mechanical or electronic speedometer options

Kit Includes:
- TREMEC TKX 5-speed transmission
- Driveshaft slip yoke (shorter driveshaft required)
- Adjustable bolt-in cross member (black powder coat, uses original bolt holes)
- Isolator mount (polyurethane)
- Speedometer solution (mechanical or electronic)
- Conversion pilot bearing
- Weather seal reverse light harness
- Hardware and complete instructions

Vehicle Fitment:
- 1961-1979 F-100s

Please Note: A 10-spline clutch disc is required.