If there is one thing that stands out as a great aspect of this job, it has to be finding out about the new products the aftermarket manufacturers are getting ready to release to enthusiasts—before they are actually released. I received an email the other day from the folks at TREMEC, touting an all-new transmission that could revolutionize manual overdrive swaps.
I’m sure you know that TREMEC is a leading manufacturer of manual transmissions and components, and when the email spoke of the release of an all-new five-speed transmission, dubbed TKX, to say I was immediately interested is an understatement. This new gearbox is a rear-wheel-drive manual transmission developed solely for the aftermarket. That means you will not find this unit in a salvage yard under a late-model Camaro or a Mustang.
The team at TREMEC was able to create a relatively small unit while keeping strength a big priority. Clearance in most transmission tunnels is now available without floor modifications.

This is another great upgrade option for inclusion in your hot rod. “The sleek new design and enhanced performance make this perfect for your next restomod project,” says Mike Kidd, aftermarket business unit manager at TREMEC. “The TKX was designed, tested, and built specifically for the aftermarket.”
The fact this overdrive transmission is capable of smooth, high-RPM shifts and be able to survive behind an engine delivering 600 lb.-ft. of torque makes it perfect for both street and performance applications. But I was curious about what prompted the design of the TKX? “We listened to our customers,” says Kidd. “We then combined their suggestions with our OEM technology and strengthened our aftermarket lineup with the addition of the TKX.”
The new TKX affords three shifter positioning locations to fit most situations.

I am told that TREMEC engineers took a forward-looking approach to find the best and most efficient solution to building this new transmission. This includes universal packaging, excellent shifting performance, and extreme durability.