TKX Auto-to-Manual Conversion Package | 1969-1970 Mustang/Cougar | Modular V8

TKX Auto-to-Manual Conversion Package | 1969-1970 Mustang/Cougar | Modular V8

TKX Auto-to-Manual Conversion Package | 1969-1970 Mustang/Cougar | Modular V8

Description

Key Features

  • 600 lb-ft torque capacity TREMEC TKX five-speed with single overdrive ratio
  • 26-spline input shaft and 31-spline output shaft for maximum drivetrain strength
  • Safe shifts at 7,500 RPM with double-lined carbon-fiber synchronizer package
  • End-loaded case design delivers superior tunnel clearance without floor modifications
  • All gears and shafts machined from special-grade steel (ASTM 4615)
  • Ribbed three-piece aluminum housing for structural stiffness and reduced NVH
  • High-performance short-throw billet aluminum shifter with clean, crisp shifts
  • Multiple gear ratio options: wide (3.27 first) and close (2.87 first) configurations
  • Retains original shift lever position for OEM appearance and feel
  • Customizable guided package system with concierge support available

Description

Converting your 1969-70 Mustang or Cougar from automatic to manual means choosing drivetrain components that work together flawlessly. This guided TKX package eliminates the guesswork by assembling every component you need for a complete auto-to-manual swap in Modular V8-powered applications. With 600 lb-ft of torque capacity and 8,000 RPM capability, the TKX handles serious power while its single overdrive gear reduces highway cruising RPMs for better fuel economy and reduced engine wear.

The TKX's end-loaded architecture creates the slimmest five-speed case on the market, fitting classic transmission tunnels without cutting or modification. TREMEC engineered the three-piece ribbed aluminum housing (main case, intermediate plate, and extension housing) for exceptional structural stiffness while minimizing noise, vibration, and harshness. Tapered roller bearings on the input, output, and countershafts reduce gear noise, while gaskets at all flanges eliminate fluid leaks and simplify installation.

Inside, multi-cone synchronizers with hybrid sintered bronze and carbon rings deliver smooth, positive engagement even at high RPM. The robust internal three-rail shift system with steel shift forks routes through a high-performance billet aluminum shifter that isolates road noise while providing precise gate-to-gate action. Built-in reverse light and cruise control safety switches come standard, along with both mechanical and electronic speedometer outputs.

The package builder walks you through every decision point: transmission gear ratio, bellhousing type, clutch system, hydraulic components, shifter configuration, crossmember, and driveline hardware. All components are selected for proper fitment with Ford Modular V8 engines in '69-70 Mustang and Mercury Cougar platforms. The TKX uses Dexron III ATF or TREMEC HP-MTF with a 2.7-quart fluid capacity. Contact MDL for concierge assistance with part selection to match your specific build and budget.

Kit Includes

This is a fully customizable package system. Final component selection is determined through MDL's guided builder and includes:

  • TREMEC TKX five-speed transmission (choice of gear ratios)
  • Custom MDL billet aluminum shifter
  • Bellhousing (aluminum or steel options)
  • Bellhousing block plate
  • Bellhousing hardware kit (aluminum or steel)
  • Flywheel (steel or aluminum options)
  • ARP flywheel bolts
  • Clutch kit (hydraulic-compatible, 26-spline disc)
  • ARP pressure plate bolts
  • Hydraulic clutch pedal assembly
  • Pedal pad kit
  • Clutch pedal bushings and bearings
  • Hydraulic master cylinder kit
  • Hydraulic release bearing
  • Hydraulic clutch line
  • Shift knob (multiple styles and finishes)
  • Shift lever (Hurst or custom options)
  • Shift boot and bezel
  • Speedometer cable or electronic sensor
  • Speedometer driven gear and clip
  • Reverse light wiring harness
  • Speedometer sensor harness
  • TKX-specific crossmember
  • Transmission mount
  • Dexron III ATF (three quarts)
  • 31-spline slip yoke (multiple U-joint series)
  • Lifetime tech support
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