MDL TREMEC GM TKX 5-Speed | 2.87 First, 0.68 OD | 2” Left Side Shift Front Shifter, 1” or 1.5” Forward Offset Stub

Key Features

• 600 lb-ft torque capacity with 7,500 RPM shift capability and 8,000 RPM engine speed rating
• Close-ratio gearing (2.87, 1.89, 1.28, 1.00, 0.68) balances strong launches with relaxed highway 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 modification with a 1” or 1.5” forward offset stub - precise shifter placement without compromise
• Shifter Stub Location: 2” left of center line, 15.25” or 15.75” back from the bellhousing face
• MDL Exclusive - not available through TREMEC

Description

Traditional GM side-shift TKX conversions force you to choose between perfect shifter placement and major floor modifications. This MDL exclusive solves that problem with a custom-engineered front socket featuring both 1" or 1.5" forward offset positions. The narrow shift body design eliminates the need for tunnel cutting while the dual offset options let you dial in exactly where the lever lands in your cockpit.

Built to handle 600 ft-lb of torque, this close-ratio TKX delivers superior shiftability at high RPM through multi-cone synchronizers and hybrid synchronizer rings made of sintered bronze and carbon. The ribbed, three-piece aluminum housing provides outstanding structural stiffness while oversized gear widths and caged needle bearings in all positions ensure long-term durability. All gears and shafts are machined from special-grade ASTM 4615 steel for maximum torque-carrying capacity.

TREMEC designed the TKX case specifically to fit within the narrow and short confines of '68–'72 Chevelle tunnels, making it an ideal upgrade path for GM A-body applications. At 99 pounds dry weight with a 2.7-quart fluid capacity, this transmission delivers modern performance in a package that respects vintage space constraints. The GM Muncie bellhousing bolt pattern means direct compatibility with your existing four-speed bellhousing.

This specific configuration is an MDL exclusive—you will not find this side shift front socket with forward offset combination anywhere else. If you need precise shifter placement without compromising tunnel integrity, this is your transmission.

Kit Includes

• TREMEC TKX 5-speed transmission (TCET17805) with 2.87/1.89/1.28/1.00/0.68 gear ratios
• High-performance short-throw billet aluminum shifter (2” left side shift front, 1” or 1.5” forward 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