MDL TREMEC GM TKX 5-Speed | 3.27 First, 0.72 OD | 2” Left Side Shift Rear, 1.65” or 2.15” 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 1.65” or 2.15” backward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 21.17” or 21.67” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

The TREMEC TKX represents a ground-up redesign of the five-speed manual transmission, engineered specifically for the aftermarket rather than adapted from an OE application. Where older TKO and T-5 transmissions suffered from balky high-RPM shifts and case clearance issues in tight transmission tunnels, the TKX solves both problems with an end-loaded architecture that produces a slimmer, stronger case while delivering smooth, precise shifts even when you're banging through the gears at 7,500 RPM.

The three-piece ribbed aluminum housing -- main case, intermediate plate, and rear extension -- provides outstanding structural stiffness while minimizing weight at just 99 lbs dry. Inside, multi-cone synchronizers paired with hybrid sintered bronze and carbon synchronizer rings eliminate the brass-on-brass limitations that made older transmissions feel notchy at high engine speeds. TREMEC further optimized durability with oversized gear widths, caged needle bearings at all gear positions, and gaskets at every flange to prevent leaks.

This wide-ratio configuration features a deep 3.27 first gear for strong launches and a 0.72 overdrive fifth for comfortable highway cruising -- perfect for pro-touring builds and street machines that need to pull hard from a stop but cruise relaxed at 70 mph. The side-shift rear socket placement positions the shifter rearward for better console alignment in many GM applications. The 26-spline input shaft maintains compatibility with common GM clutch discs, while the 31-spline output uses a Ford C6-style slip yoke.

Built from 100% brand-new OEM-quality components, the TKX bolts directly to any standard GM Muncie bellhousing pattern. Fluid capacity is 2.7 quarts of ATF Dexron III, TREMEC HP-MTF, or Synchromesh -- no exotic lubricants required.

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, 1.65” or 2.15” 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