TKX Sequential Shifter Conversion Kit
Convert your standard Tremec TKX H-pattern gearbox to a true sequential operation. Designed for straightforward installation by anyone with basic mechanical skills, this bolt-on kit delivers repeatable, lightning-fast shifts under heavy racing loads.
Performance Benefits: Get the right gear, every time.
The push/pull sequential motion drastically improves driver coordination under high-G loads compared to a standard H-pattern. It makes it physically impossible to grab the wrong gear—eliminating accidental 2-5 upshifts that cost you races, or 5-2 downshifts that destroy engines.
- Durability: Engineered for the loads of hard driving with synchro gearboxes.
- Fast & Consistent: Simple pull-back to upshift, push-forward to downshift.
- Precise Mechanical Feedback: Know exactly when the gear engages.
- Mechanical Reverse Lockout: Added safety and ease of use.
- True Neutral: Neutral can be selected between every gear.
What’s Included in the Basic Kit?
The core kit includes the main shifter unit, shift knob, and everything required to physically convert your gearbox to sequential operation.
Available Shifter Options & Upgrades
Customise your setup to fit your exact interior and data-logging needs:
- Gear Position Sensor: Outputs a 0-5V analogue signal. Essential for aftermarket ECUs or digital dashes, and can be used for gear-based boost control.
- Digital Gear Indicator: A sleek dash display showing your current gear (supplied together with the position sensor when ordered as the gear indicator and sensor option)
- Shifter Surround: Neatly seals the shifter and the transmission tunnel opening to keep track noise and exhaust fumes out of the cabin.
- Direct High Lever: Mounts directly to the shifter, providing a tall shift position while using internal linkages to preserve the short throw.
- High Linkage Lever: Moves the lever further forward or backward (typically 70mm+) while providing a high mount and maintaining a short throw. Ideal for custom race car driving positions.
Ordering guide: Right vs. Left Lever
Please read carefully before selecting. Do not choose a Left Lever simply because your car is Left-Hand Drive. The correct choice depends entirely on your specific transmission tunnel clearance.
- Right Lever (Standard Choice): Offset 12mm (1/2 inch) to the right. This positions the shifter as centrally as possible. Almost all Japanese, Australian, and general custom builds require the Right Lever.
- Left Lever (Specialty Choice): Offset 48mm (2 inches) to the left. This is a severe offset typically only required for 4th Gen Camaros, Dodge Vipers, and a few specific older chassis.
TKX Special Installation Notes
- Case Modification Required: Similar to our R154 kit, you must temporarily remove the rear housing to install this shifter. While the housing is off, you will need to mill or grind a small amount of aluminium from the case for internal clearance. Note: This modification does not permanently alter the gearbox’s function; you can still reinstall a standard H-pattern shifter in the future if desired.
- Tunnel Clearance: All direct-mount shifters are designed to fit the geometry of the gearbox, not a specific car chassis. You will likely need to trim your transmission tunnel to clear the new mechanism. We highly recommend adding the Shifter Surround option to seal this modification cleanly.
In most vehicles, the shifter will clear interior centre consoles and look factory-clean once installed. If you are unsure about fitment for your specific chassis, contact us through the contact form.
