McLeod 2024 Mustang GT RXT HD 1 X 23 Spline with 8 Bolt AL Flywheel
Supercharged, turbocharged or nitrous S650 Mustangs overpower the factory clutch quickly, and the first sign is usually RPM flaring on a hard shift or a slip in third gear. McLeod 6339825HD is the RXT HD twin disc clutch on a dedicated billet aluminum flywheel for the 2024 Mustang with the 5.0L Coyote and a six-speed manual. It uses a 1 x 23 spline disc hub and the 8-bolt crank pattern, and it is the highest holding-capacity step in McLeod's 2024 Mustang twin disc lineup.
The RXT HD runs two ceramic-lined friction discs separated by a floater plate, so the clamping force works on twice the friction area of a single disc. The HD version adds a higher clamp load pressure plate with strap drive, and McLeod rates it for up to 1,300 horsepower. That extra clamp load is why the pedal is described as moderate rather than stock-like: it is a little heavier than the standard RXT, but still made for daily driving to the track and back. The aluminum flywheel replaces the factory flywheel, so the Coyote revs and drops RPM faster between shifts, which also means a little more throttle is needed to pull away smoothly.
Check the hydraulics first. Look at the fluid level and condition in the clutch reservoir, bleed the system, and confirm the pedal returns fully, because a soft or sticking pedal can mimic a worn clutch. Next, do a steady-throttle test in fifth gear at low RPM and roll into the throttle: if engine speed rises faster than road speed, the disc is slipping. Any oil on the bell housing points to a seal leak that must be fixed before a new clutch goes in. Our transmission slipping diagnosis guide covers how to separate clutch slip from other drivetrain faults, and the manual vs automatic repair cost guide shows what the labor side usually runs.
This listing is for the 2024 Ford Mustang 5.0L with a manual transmission. Be aware that the S650 Mustang uses two different six-speeds: the GT has a Getrag MT82-D4 and the Dark Horse has a Tremec TR-3160. McLeod's title calls this the 2024 Mustang GT kit, while its application line also references the 2024-2026 Dark Horse 5.0L with the same 1 x 23 spline and 8-bolt flywheel. Because of that difference, match the input shaft spline count and confirm your trim before ordering, or send us your year, trim and VIN and we will check it. EcoBoost cars and automatics are not covered. If you are not running boost and want a lighter pedal, compare the standard McLeod 2024 Mustang RXT 6339825M or the street-focused McLeod RST 6339825.
The clutch ships assembled with alignment marks on the pressure plate, floater and discs. Keep the parts oriented as marked, follow McLeod's washer order, and do not use thread locker on the pressure plate studs or nuts. Tighten the pressure plate in a star pattern in two steps, 25 ft-lb and then 35 ft-lb. Inspect the pilot bearing, test fit the pilot tool, and replace the bearing if it is damaged; a pilot bushing remover handles that job. McLeod recommends replacing the factory hydraulic slave cylinder during the install since the labor is the same. Bleed the system with fresh brake fluid of the type Ford specifies for your car. Break the clutch in with about 1200 normal street clutch cycles, traction control off, before any hard launches, and never on a chassis dyno.
| Brand | McLeod Racing |
| Part number | 6339825HD |
| Fits | McLeod 2024 Mustang GT RXT HD 1 X 23 Spline with 8 Bolt AL Flywheel |
| Vehicle fitment | Ford Mustang (2024) |
| Type | Clutch Kits - Multi |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
The listing is titled for the 2024 Mustang GT, and McLeod's application note also references the Dark Horse 5.0L with the same 1 x 23 spline and 8-bolt flywheel. The GT uses a Getrag MT82-D4 and the Dark Horse a Tremec TR-3160, so confirm your input spline count or send us your trim and VIN before ordering.
The RST is McLeod's street twin disc, the RXT steps up holding capacity, and the RXT HD adds a higher clamp load pressure plate rated up to 1,300 horsepower for boosted or nitrous builds. More clamp load means a firmer pedal.
Yes. 6339825HD is a complete clutch and dedicated 8-bolt billet aluminum flywheel package, so the factory flywheel is not reused.
McLeod recommends a new hydraulic slave cylinder during the install. Also inspect the pilot bearing and replace it if it is rough, and fix any rear main or input seal leak so oil does not reach the new discs.
Drive normally for about 1200 clutch cycles, shifting through the gears with traction control off. McLeod says not to break it in on a chassis dyno. Avoid launches and full-power shifts until the break-in is complete.
