TKX 5-Speed Transmission Package | Chevy LS

TKX 5-Speed Transmission Package | Chevy LS

TKX 5-Speed Transmission Package | Chevy LS

Description

Key Features

  • 600 lb-ft torque capacity with 8,000 RPM engine speed rating - handles serious LS power
  • Compact end-loading design fits GM A-bodies (Chevelle, GTO, Cutlass, Nova, Camaro) without tunnel modifications
  • 26-spline input shaft with 31-spline output shaft for added drivetrain strength
  • Multi-cone synchronizers with sintered bronze and carbon hybrid rings deliver superior high-RPM shift quality
  • Three-piece ribbed aluminum housing provides structural stiffness and reduces NVH
  • Three shifter locations plus multiple shift lever options for optimal positioning
  • Multiple gear ratio configurations: wide ratio (3.27, 1.98, 1.34, 1.00, 0.72) or close ratio (2.87, 1.89, 1.28, 1.00, 0.68/0.81)
  • Fully customizable package - transmission, bellhousing, clutch, hydraulics, and drivetrain components
  • Bolts to GM 3-speed and 4-speed Muncie/Richmond bellhousing pattern
  • 2.7 qt fluid capacity - uses ATF, Dexron-III, GM Synchromesh, or TREMEC HP-MTF

Description

Upgrading an LS-powered classic to a modern manual transmission often means cutting floor pans, fabricating crossmembers, and hunting down mismatched components. This fully customizable TKX package solves those problems by bundling a TREMEC TKX five-speed with purpose-matched bellhousing, clutch system, hydraulics, flywheel, and drivetrain components - all configured specifically for Chevy LS and LQ engines. TREMEC designed the TKX from the ground up as an aftermarket transmission, and its compact end-loading architecture provides the slimmest five-speed case on the market for outstanding tunnel clearance in A-bodies and other classic GM platforms.

Under the three-piece ribbed aluminum housing, all gears and shafts are manufactured from special grade ASTM 4615 steel for maximum torque capacity. The robust internal three-rail shift system with steel shift forks, combined with tapered roller bearings on the input, output, and countershafts, delivers durability and reduced noise. Multi-cone synchronizers with sintered bronze and carbon hybrid rings enable crisp shifts at engine speeds up to 7,500 RPM, while gaskets at all flanges eliminate leaks. The high-performance short-throw billet aluminum shifter isolates road noise while providing clean, precise gear changes.

MDL's guided package configurator walks you through selecting the optimal combination for your build: choose between wide ratio or close ratio gear sets, mechanical or hydraulic clutch release bellhousings, clutch kits matched to your power level, flywheels balanced for your specific LS variant, master cylinder kits, shift levers, speedometer solutions, and driveshaft yokes. Every component is hand-selected to work together, eliminating guesswork and compatibility headaches.

With a single overdrive gear reducing cruising RPMs and three available fifth-gear ratios (0.68, 0.72, or 0.81), you can fine-tune highway manners to match your rear axle ratio. Built-in reverse light switch and cruise control safety switch simplify wiring. Whether you're building a weekend cruiser or a track-ready machine, this package delivers the flexibility to match your power goals and driving style with expert support at every step.

What's Included

  • TREMEC TKX five-speed transmission - ratio selection during configuration (wide or close ratio options)
  • GM bellhousing - hydraulic or mechanical clutch release options available
  • Bellhousing hardware kit - aluminum or steel options
  • Clutch set - multiple torque capacity and disc diameter options to match your power level
  • Pressure plate bolts - standard or ARP options
  • Flywheel - balanced for specific LS engine application (LS1/LS2/LS3/LS6/LS7, LSX, or LS9 options)
  • Flywheel bolts - multiple grade options including ARP
  • Hydraulic master cylinder kit (if hydraulic bellhousing selected) - multiple bore sizes available
  • Stainless braided hydraulic line
  • Hydraulic release bearing assembly
  • Transmission mount
  • Shift knob - multiple styles and finishes including MDL-branded options
  • Shift lever - multiple positions and lengths available
  • Shift boot - leather or standard options with bezel
  • Speedometer cable adapter and driven gear - multiple tooth counts for accurate calibration
  • Electronic speedometer sensor (optional)
  • Transmission fluid - ATF or high-performance MTF (3 quarts)
  • Reverse light wiring harness
  • Driveshaft slip yoke - 31-spline with 1310, 1330, or 1350 U-joint options
  • Expert concierge consultation for optimal component selection
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