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TREMEC TKX 5-Speed Manual Transmission – TCET18083 for GM Applications

26-Spline Input | .72 Overdrive | 600 lb-ft Torque Capacity | Built for Street and Track

The TREMEC TKX 5-Speed Manual Transmission (TCET18083) is a purpose-built performance transmission developed specifically for the aftermarket. Designed for GM applications, this model is ideal for anyone upgrading or restoring a GM-powered classic, muscle car, or custom build. Whether you're replacing an outdated 4-speed or building a high-horsepower street machine, the TKX delivers modern durability, improved shift quality, and exceptional drivability.

Engineered for serious performance, daily reliability, and modern drivability, this TKX 5-speed manual transmission is built to handle up to 600 lb-ft of torque and shift cleanly at a screaming 7,500 RPM. Whether you're carving corners, tearing up the strip, or cruising the highway with .68 overdrive, the TKX delivers where it matters.

Transmission Features at a Glance:

• Part Number: TCET18083

• Ford-Specific Input Shaft: 26-Spline – Requires 26-spline clutch disc

• Output Shaft: 31-Spline

• Gear Ratios:

  • 1st – 3.27

  • 2nd – 1.98

  • 3rd – 1.34

  • 4th – 1.00

  • 5th – 0.72 (fuel-saving overdrive!)

• Torque Capacity: 600 lb-ft

• RPM Capability: 7,500 RPM shift points

• Shifter Compatibility: Three locations for flexible fitment (front shift kits available from SST!)

• Warranty: 12-Month Factory Warranty from TREMEC

Designed for Power, Built for Precision

• Compact, end-loaded design fits most transmission tunnels

• Heavy-duty 3-piece aluminum housing for maximum rigidity and strength

• High-performance billet aluminum short-throw shifter delivers crisp, clean shifts with reduced throw and isolated road noise

• Advanced multi-cone synchronizers with sintered bronze and carbon hybrid rings for superior shift quality

• Noise, vibration, and harshness (NVH) optimized gear layout – smooth and quiet, even at high RPM

• Gaskets at all mating surfaces for leak-free, easy installation

• Built-in reverse light switch and cruise control safety switch – modern features for today’s builds

Why Choose the TKX?

The TREMEC TKX represents a leap forward from older 5-speed and 4-speed manual transmissions. With higher torque capacity, smooth high-RPM shifting, and improved fitment characteristics, it’s a top-tier choice for builders, racers, and restorers alike. Unlike legacy options, the TKX is designed with current driveline demands in mind—giving you a modern solution without compromising on fitment or feel.

This transmission offers a rare combination of performance, precision, and packaging that makes it a go-to upgrade for any serious GM build.

Order the TREMEC TKX 5-Speed TCET18083 Today – Performance, Reliability, and a Modern Driving Experience in One Package.

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