MDL TREMEC GM TKX 5-Speed | 3.27 First, 0.72 OD | 2” Left Side Shift Rear, 1” or 1.15” Backward Offset

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Gearing ratio (3.27, 1.98, 1.34, ,1.00, 0.72) - overdrive drops highway RPM for improved cruising
• 26-spline input shaft (1-1/8 in. diameter) and 31-spline output shaft for added strength
• Compact end-loaded aluminum case fits most GM tunnels without floor modifications
• Ribbed 3-piece housing (main case, intermediate plate, rear extension) for structural stiffness
• Multi-cone synchronizers with sintered carbon/bronze hybrid rings for smooth high-RPM shifts
• ASTM 4615 special-grade steel gears and shafts with caged needle bearings in all gear positions
• GM Muncie bellhousing bolt pattern - direct swap for 3-speed and 4-speed applications
• GM 0.590-inch pilot tip with 1.375-inch OD throwout bearing guide tube
• Built-in reverse light switch and cruise control safety switch
• Dual speedometer outputs: mechanical 7-tooth Ford gear (adaptable to GM) plus OSS two-wire analog sensor
• 99 lbs dry weight; 2.7-quart fluid capacity
• High-performance short-throw billet aluminum shifter included
• MDL side shift rear modification with a 1” or 1.15” backward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 20.52” or 21.02” backward from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Upgrading a classic GM muscle car from a 3-speed or 4-speed to a modern overdrive transmission used to mean cutting your tunnel, fabricating crossmembers, and hoping everything lined up. The TREMEC TKX changes that equation entirely. Designed from the ground up for the aftermarket, this 5-speed delivers 600 lb-ft of torque capacity in an end-loaded case that fits GM A-bodies - Chevelles, Camaros, Novas, GTOs, and Cutlasses - without tunnel modifications.

This MDL-configured GM TKX features a side shift rear socket shifter with a 1" or 1.5" backward offset, giving you maximum flexibility when working around console limitations, custom interiors, or tight tunnel constraints. The wide ratio gearset (3.27 / 1.98 / 1.34 / 1.00 / 0.72) provides the aggressive first gear you need for strong acceleration off the line, while the 0.72 overdrive drops engine RPM for relaxed highway cruising and improved fuel efficiency.

TREMEC engineered the TKX with internals borrowed from the proven Magnum 6-speed platform. Multi-cone synchronizers and hybrid sintered carbon/bronze synchronizer rings deliver smooth, positive shifts even at 7,500 RPM - a significant improvement over older 5-speed designs. The 3-piece ribbed aluminum housing provides exceptional structural stiffness while minimizing NVH, and gaskets at all flanges eliminate the leak points common in older transmissions. The internal 3-rail shift system with steel shift forks ensures precise gear engagement under load.

The GM configuration uses the standard Muncie bellhousing bolt pattern, so this TKX bolts directly to your existing bellhousing from a 3-speed or 4-speed application. The 26-spline input shaft maintains compatibility with common GM performance clutches, while the 31-spline output shaft provides the strength to handle serious power. Specify ATF Dexron III or TREMEC HP-MTF fluid for optimal performance and shift quality. Built from 100% brand-new OEM-quality components.

Kit Includes

• TREMEC TKX 5-speed transmission (TCET17805) with 3.27, 1.98, 1.34, 1.00, 0.72 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift rear, 1” or 1.5” backward offset stub)
• Gaskets for all mating surfaces
• Built-in reverse light switch (left side)
• Built-in cruise control safety switch (right side)
• Mechanical speedometer drive gear (7-tooth Ford pattern, adaptable to GM)
• OSS two-wire analog speedometer sensor
• MDL extended warranty: manufacturer warranty plus 1 additional year with 1-year grace period
• Lifetime technical support