TREMEC TKX Five-Speed Conversion Package | Superformance Cobra | Small Block

TREMEC TKX Five-Speed Conversion Package | Superformance Cobra | Small Block

TREMEC TKX Five-Speed Conversion Package | Superformance Cobra | Small Block

Description

TREMEC TKX Five-Speed Conversion Package | Superformance Cobra | Small Block

Key Features

  • 600 lb-ft torque capacity with 8,000 RPM engine speed capability and shifts at 7,500 RPM
  • Wide ratio (3.27, 1.98, 1.34, 1.00, 0.72) or close ratio (2.87, 1.89, 1.28, 1.00, 0.68 or 0.81) gear configurations available
  • Compact end-loaded case design fits tight transmission tunnels without modifications
  • 26-spline input shaft with 31-spline output shaft for maximum strength
  • Multi-cone synchronizers with carbon/bronze hybrid rings deliver smooth high-RPM shifts
  • Three-piece ribbed aluminum housing provides outstanding structural stiffness
  • Gaskets at all flanges eliminate fluid leaks—no sealer required
  • High-performance short-throw billet aluminum shifter with three mounting positions
  • Fully customizable package—select transmission variant, bellhousing, clutch, hydraulics, and all supporting hardware

Description

Give your Superformance Cobra the modern five-speed drivetrain it deserves. Superformance builds their MKIII rolling chassis ready to accept engine and transmission, making this fully customizable TKX package the ideal solution for completing your small block Ford-powered roadster. The TREMEC TKX represents the next generation in five-speed technology—purpose-built for the aftermarket with power levels and RPM demands that exceed what older transmissions can handle.

The TKX's compact end-loaded design provides clearance in tight transmission tunnels without requiring floor modifications. Internal components draw from TREMEC's Magnum six-speed technology: all gears and shafts are machined from ASTM 4615 special-grade steel for increased torque capacity, while multi-cone synchronizers with carbon/bronze hybrid rings deliver the smooth, crisp shifts you expect at high RPM. Wide gear widths and caged needle bearings in all gear positions extend service life under demanding use. The three-piece ribbed aluminum housing adds structural stiffness while keeping weight down at approximately 99 pounds dry.

Choose your gear ratio strategy based on how you'll drive your Cobra. The wide ratio configuration with 3.27 first gear suits aggressive acceleration and high-performance builds where you want maximum launch capability. The close ratio option with 2.87 first gear pairs better with highway cruising and balanced street driving, especially when combined with numerically higher rear axle ratios. Both configurations deliver 600 lb-ft torque capacity. For lubrication, TREMEC recommends HP-MTF, Dexron-III, GM Synchromesh, Mobil 1 Synthetic ATF, or Pennzoil Synchromesh.

Every MDL package is completely customizable to your Superformance build requirements. The guided selection process walks you through transmission variants, Ford small block bellhousing options, clutch configurations, external hydraulic slave systems, speedometer solutions, and all necessary mounting hardware. Professional technical support and extended warranty coverage back your purchase.

What's Included

  • Your choice of TREMEC TKX transmission (wide ratio or close ratio configurations)
  • Ford small block bellhousing (aluminum or steel options)
  • Complete hardware kit for TKX Ford small block installation
  • Bellhousing clutch fork
  • Flywheel selection (steel or billet aluminum, multiple balance options)
  • ARP flywheel bolt kit
  • Complete clutch set with pressure plate and disc
  • ARP or standard pressure plate bolts
  • External hydraulic slave cylinder kit
  • Speedometer cable, gears, clip, and electronic sensor options
  • Transmission mount
  • 3 quarts TREMEC HP-MTF or equivalent transmission fluid
  • Complete installation documentation
  • MDL lifetime technical support
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