TKX 5-Speed Transmission Ford 26-Spline

The TREMEC TKX 5-Speed Transmission Ford 26-Spline is engineered for enthusiasts and professional builders who demand reliable, smooth power delivery in street and mild performance applications. This transmission represents a significant upgrade path for classic Fords, muscle cars, and modern swaps where OEM gearboxes limit drivability or lack overdrive efficiency. The TKX platform has earned respect among hot rodders and restoration shops for combining old-school simplicity with contemporary gear ratios that reduce highway RPM and improve fuel economy without sacrificing responsive acceleration.

TREMEC engineered the TKX with a cast-iron case and robust internal components designed to handle small-block power reliably. The 26-spline input shaft accommodates Ford bellhousings and coupling packages, making retrofit installations straightforward for engine swaps or transmission replacements. Five forward gears with a 3.42 first ratio provide strong launch characteristics while the 0.64 fifth-gear overdrive reduces cruising RPM on highway runs, a critical advantage for driveline longevity and everyday usability. The non-synchronous reverse gear and hydraulic clutch compatibility simplify installation in both classic and contemporary builds.

Builders restoring early and mid-generation Fords, Mustangs, and hot rods rely on the TKX 5-Speed for its bolt-in compatibility with existing Ford engine bays and bell housings. The transmission excels in street-driven vehicles where smooth shifts, reliable engagement, and highway overdrive efficiency matter more than exotic gear selection. Weighing 95 pounds and measuring 34 inches in length, it fits tight engine compartments while delivering the mechanical durability expected from TREMEC's proven transmission designs. Installation requires a suitable driveshaft, flywheel, and clutch package matched to your specific application—consulting detailed fitment guides ensures trouble-free assembly.