McLeod RXT Twin Disc Clutch Kit 23 Spline 11-17 Ford Mustang GT V8 5.0L

A Coyote-powered 2011-2017 Mustang GT or Boss 302 with a blower or turbo kit will overpower the factory single disc quickly, and the first sign is usually third gear flaring at the top of a pull. McLeod RXT 6335825M is the twin disc answer for that car with the stock six-speed: two ceramic discs, floater, pressure plate and adapter ring on a billet aluminum flywheel for the 8-bolt 5.0L crank, 164 tooth ring gear, zero balance and a 1 x 23 metric spline to match the factory MT82 input shaft.

What the clutch kit does in a 2011-2017 Mustang GT

For 2011 Ford moved the GT to the Getrag/Ford MT82 six-speed, and the S550 cars from 2015 kept it. Both generations use the same 1 x 23 metric input, which is why one kit covers 2011 through 2017. The twin disc design spreads clamp load over two disc faces, so it holds the torque of a supercharged Coyote while the pedal stays lighter than stock. McLeod rates the RXT street twin at roughly 1,000 to 1,100 horsepower. The billet aluminum flywheel replaces the heavier factory unit, so the engine picks up revs quickly between shifts, which suits road course and drag cars that still drive to the track.

Symptoms on a 5.0L Mustang that call for this kit

• Slipping in third, fourth or fifth at high rpm, especially after a tune or power adder.
• Chatter on takeoff or a burning smell after repeated launches.
• Clutch that releases poorly, leaving grinding into first or reverse; on these cars rule out the concentric slave first.
• Squealing or grinding when the pedal is pressed, typical of a worn release bearing in the slave assembly.
• Pedal feel that changes when hot, often fluid or a failing slave rather than the disc.

How to confirm before you buy

Hold fourth gear around 2,500 rpm and roll into the throttle; if the tach jumps without the car pulling, the clutch is slipping. Hard shifting on an MT82 is not always the clutch, so read our Ford Mustang MT82 problems and cost guide to separate gearbox issues from clutch issues. For labor expectations see the automatic vs manual transmission repair cost guide.

Fitment

Listed for the 2011-2017 Ford Mustang GT V8 5.0L; McLeod's application line also names the Boss 302. It needs the factory 1 x 23 metric spline MT82. If your car has been swapped to a T-56 Magnum, TKX or another gearbox with a 26 spline input, this is the wrong kit. It is not for V6 or EcoBoost cars, the 2018-up Mustang, or the GT350 and GT500. Not sure what your car has? Send the year and VIN and we will confirm before it ships. More versions for the same car: the RXT with steel flywheel and the higher clamp RXT HD twin.

Install notes

• Slide each disc on the MT82 input by hand before assembly; it must move freely. Clean the spline and use only dry graphite if needed.
• Bottom disc goes on with the flywheel side label facing the flywheel. Bolt the adapter ring and floater down with the supplied bolts and no extra washers.
• Match the drive straps and the alignment mark, then torque the pressure plate nuts to 25 ft-lb and then 35 ft-lb in a star pattern, with no thread locker.
• Replace the concentric slave with the job; the Exedy slave and release bearing for 2011-2015 GT fits the early years. Then bleed the system as in how to bleed a hydraulic clutch.
• Check the pilot bearing and replace it if it feels rough.
• Expect some gear rattle at idle once the factory flywheel is gone; that is transmission noise, not a clutch fault.
• Break in with about 1200 normal engagements with traction control off.

Does it fit both the 2011-2014 and 2015-2017 Mustang GT?

Yes. Both generations of GT used the MT82 six-speed with the 1 x 23 metric input and the 8-bolt 5.0L crank, and this kit is listed for 2011 through 2017.

Will it fit a 2018 or newer Mustang?

It is not listed for 2018-up cars. McLeod sells separate RXT part numbers for the 2018-2023 S550 and the 2024-up S650.

Do I need a new slave cylinder?

McLeod recommends replacing the factory hydraulic slave during the install since the labor is the same. The kit does not list a release bearing in its contents.

What is the difference between this and the steel flywheel version?

The clutch is the same RXT twin disc. This version uses a lighter billet aluminum flywheel; the steel version weighs more, which some drivers prefer for smoother launches on the street.

Will this fix my hard shifting MT82?

Only if the shifting problem comes from the clutch not releasing. Synchro and shifter issues on the MT82 are inside the gearbox, so check that first.

How much power does it hold?

McLeod rates the RXT street twin at roughly 1,000 to 1,100 horsepower, aimed at supercharged and turbo builds.

• Automatic vs Manual Transmission Repair Cost