American Powertrain Pro‑Fit TKX 5‑Speed Transmission Kit Chevy C/K 88‑98

The American Powertrain Pro‑Fit TKX kit offers improved highway cruising, reduced RPMs at speed, cooler engine operation, and longer engine life. It includes a Tremec TKX 5‑speed and a mid‑shift conversion that retains factory shifter location without modifying the tunnel, console, or chassis. It upgrades your Chevy C/K truck to modern overdrive performance with better fuel economy.

Features and Benefits:
- Delivers 30‑50% increased fuel economy
- Reduces highway RPM for lower driver fatigue and quieter cruising
- Reduces NVH (Noise, Vibration, Harshness)
- Lowers engine stress and internal heat for extended engine life
- Smooth 5‑speed shifts up to 8,000 RPM
- Retains factory shifter position with no tunnel or chassis modifications
- Your choice of overdrive

Kit Includes:
- Tremec TKX 5-Speed with streamlined case
- White Lightning Mid Shift Conversion
- Cryogenically Hardened Steel Driveshaft Slip Yoke
- Polyurethane Transmission Mount
- Reverse Light Harness with Weatherseal
- Speedometer Conversion (Mechanical or Electronic)
- White Shifter Knob
- Spacer Block for use with Stock Crossmember
- Hardware and Instructions

Please Note:
- Kit does NOT require modifications to tunnel, console, or chassis. A 26-spline clutch disk is required.
- Reuses the stock crossmember with included spacer block.

Vehicle Fitment:
- 1988‑1998 Chevy C/K