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Hard Parts

McLeod 2024+ Ford Mustang RXT 1 X 23 Spline with 8 Bolt AL Flywheel

$1595.00
In stock • ships from the USA • qualifies for FREE shipping

McLeod 2024+ Ford Mustang RXT 1 X 23 Spline with 8 Bolt AL Flywheel

Secure Stripe checkout • free shipping over $100 • 30-day returns
Secure Stripe checkout
Ships from the USA
30-day returns

About this product

A new S650 Mustang with a supercharger kit, a turbo system or a nitrous plate will find the limit of the factory clutch fast, usually as a flare on the 2-3 shift or a slip at the top of third. McLeod 6339825M is the RXT twin disc clutch packaged with its own billet aluminum 8-bolt flywheel for the 2024 and later Mustang with the 5.0L Coyote and a six-speed manual. It sits in the middle of McLeod's three-step S650 lineup: more holding power than the organic RST, a lighter pedal than the RXT HD.

What the RXT twin disc does in an S650 Mustang

Instead of one large disc, the RXT stacks two ceramic-lined discs with a floater plate between them. Doubling the friction surfaces lets the pressure plate hold far more torque without needing a stiff spring, which is why McLeod describes the pedal as lighter than stock even though the clutch is rated for up to 1,100 horsepower. The pressure plate uses strap drive, and the dedicated aluminum flywheel replaces the factory flywheel completely. Expect quicker revs between shifts and a ceramic engagement that is smooth for a twin, but firmer at the bite point than an organic street disc. It is built for cars that get driven to the track, make passes, and get driven home.

Symptoms that point to this upgrade

How to confirm the clutch is slipping

Rule out the hydraulics first. Check the reservoir level, bleed the clutch circuit, and make sure the pedal comes all the way back up. Then cruise in fifth or sixth at low RPM and roll into the throttle: if the tach rises faster than the speedometer, the disc is slipping. Datalog the run if the car is tuned, since an RPM jump with no change in vehicle speed is clear evidence. Our shift flare vs slip guide explains how to tell a momentary flare from true slip, and the slipping diagnosis guide covers other drivetrain causes worth ruling out before you pull the transmission.

Fitment

This listing covers the 2024 and later Ford Mustang 5.0L with a six-speed manual, using a 1 x 23 metric spline disc hub and the 8-bolt crank flange. McLeod's catalog line for this part number references the 2024-2026 Dark Horse 5.0L, while the listing title reads 2024+ Mustang. The S650 GT uses a Getrag MT82-D4 and the Dark Horse uses a Tremec TR-3160, so confirm your input shaft spline before ordering or send us your year, trim and VIN and we will check it for you. EcoBoost and 10-speed automatic cars are not covered. For a non-boosted car that only needs more grip and a soft organic feel, look at the McLeod RST 6339825. If the build is past 1,100 horsepower, the RXT HD 6339825HD adds a higher clamp load pressure plate.

Install notes

The assembly arrives balanced and marked. Keep the pressure plate, floater and discs in the marked orientation, follow McLeod's washer stack, and do not put thread locker on the pressure plate studs or nuts. Snug the pressure plate in a star pattern to 25 ft-lb, then make a second pass to 35 ft-lb. Check the pilot bearing with the supplied pilot tool and replace it if it is rough or loose; a pilot bearing puller gets the old one out without damaging the crank. McLeod recommends a new hydraulic slave cylinder while the transmission is out. Refill and bleed with fresh brake fluid of the grade marked on your reservoir cap. Break the clutch in with about 1,200 normal street engagements, traction control off, before any launches, and never do the break-in on a chassis dyno.


Specifications

BrandMcLeod Racing
Part number6339825M
FitsMcLeod 2024+ Ford Mustang RXT 1 X 23 Spline with 8 Bolt AL Flywheel
Vehicle fitmentFord Mustang Rxt 1 X (2024)
TypeClutch Kits - Multi
ConditionNew
ShipsSame business day (in stock), from the USA
Warranty1-year

McLeod 2024+ Ford Mustang RXT 1 X 23 Spline with 8 Bolt AL Flywheel: common questions

Will this fit a 2024 Mustang GT as well as the Dark Horse?

McLeod's catalog line names the 2024-2026 Dark Horse 5.0L, and the listing title says 2024+ Mustang. The GT runs a Getrag MT82-D4 and the Dark Horse a Tremec TR-3160, so count your input shaft splines or send us your trim and VIN and we will confirm before you order.

How much power will the RXT hold?

McLeod rates the RXT twin disc for up to 1,100 horsepower with ceramic friction discs. If your combination is beyond that, the RXT HD version with a higher clamp load pressure plate is rated for more.

Is the flywheel and pilot tool included?

Yes. This is a complete unit with a dedicated 8-bolt billet aluminum flywheel, and McLeod supplies a pilot tool for alignment. A release bearing is not part of this kit, so plan on a new hydraulic slave cylinder.

Will the pedal be heavier than stock?

McLeod describes the RXT pedal as lighter than stock, because the twin disc design gets its holding power from extra friction area instead of a stiffer diaphragm spring.

What fluid does the clutch hydraulic system use?

The Mustang clutch hydraulics run on brake fluid. Use fresh fluid of the type printed on your reservoir cap and bleed the system completely after the slave cylinder is installed.


Repair guides for this job

Sources
  1. McLeod Racing (via SEMA Data) — RST and RXT Twin Disc Clutch Installation Instructions. Marked orientation, washer order, no thread locker, 25 then 35 ft-lb star pattern, pilot bearing check, replace slave cylinder, 1,200-cycle break-in, no chassis dyno break-in. sdda.semadata.org/Standard/Mc%20Leod/RST-RXT_Instructions.pdf
  2. Wikipedia — Ford Mustang (seventh generation). S650 manual transmissions: Getrag MT82-D4 six-speed in the GT and Tremec TR-3160 six-speed in the Dark Horse. en.wikipedia.org/wiki/Ford_Mustang_(seventh_generation)
  3. Centerforce — 2019 Mustang 5.0L 6-Spd (MT82) clutch applications. Confirms the Coyote 5.0L manual combination uses a 1 x 23M input spline and an 8-bolt crank flange. centerforce.com/ag-1787058.1786365.1791139-2019-mustang-5-0l-302-cid-6-spd-mt82.html

McLeod 2024+ Ford Mustang RXT 1 X 23 Spline with 8 Bolt AL Flywheel

$1595.00
In stock • ships from the USA • FREE shipping • 30-day returns

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