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McLeod part 6335807MD is an RST HD twin-disc clutch kit that includes a matched aluminum flywheel for 2005-2017 Ford Mustang GT, Boss 302, Bullitt, Shelby GT, and GT Premium models with an 8-bolt crank. The RST HD sits between McLeod's RST and RXT lines, pairing a full-face organic disc with a segmented ceramic disc to add holding power over a stock clutch while keeping the pedal manageable for daily street driving.
| Vehicle Application | Engine |
|---|---|
| 2005-2017 Ford Mustang GT | 4.6L/5.0L V8 |
| 2015-2017 Ford Mustang GT Premium | 5.0L V8 |
| 2015 Ford Mustang GT 50 Years Limited Edition | 5.0L V8 |
| 2012-2013 Ford Mustang Boss 302 | 5.0L V8 |
| 2008-2009 Ford Mustang Bullitt | 4.6L V8 |
| 2007-2008 Ford Mustang Shelby GT | 4.6L V8 |
| Detail | Value |
|---|---|
| Manufacturer part number | 6335807MD |
| Clutch type | RST HD twin-disc |
| Input shaft spline | 1-1/8 inch x 26 spline |
| Disc facing material | Organic on one side, segmented ceramic on the other |
| Flywheel material | Aluminum |
| Flywheel ring gear | 164 tooth |
| Flywheel bolt pattern | 8-bolt crank |
| Horsepower rating | Up to 950 horsepower |
McLeod Racing has manufactured clutches, flywheels, and driveline components for street and race applications since 1961. The RST HD line extends the company's RST platform with a hybrid organic and ceramic disc combination built for owners who want more holding capacity than a stock clutch without giving up everyday drivability.
The RST HD is built for daily street driving with occasional track use, using an organic-faced disc for smooth engagement and a ceramic-faced disc for added holding power under hard use.
Does this kit include a flywheel?Yes. This version of the RST HD includes a matched aluminum flywheel with a 164-tooth ring gear.
What input shaft spline does this kit use?This kit uses a 1-1/8 inch, 26-spline input shaft.
Does this kit fit the Boss 302?Yes. This kit fits the 2012-2013 Mustang Boss 302 in addition to the Mustang GT, Bullitt, Shelby GT, and GT Premium applications listed in the fitment table.
Does this kit fit the Shelby GT500?No. This kit fits the naturally aspirated GT-based applications listed in the fitment table and does not fit the supercharged Shelby GT500.
How much horsepower can this clutch handle?McLeod rates the RST HD twin-disc kit for up to 950 horsepower.
Is professional installation recommended?Yes. Clutch and flywheel installation requires transmission removal and should be performed by a qualified installer with the correct torque specifications.
Can this clutch be used for daily driving?Yes. The organic-faced disc side is designed to preserve smooth, street-friendly engagement while the ceramic-faced side adds holding power for spirited driving.
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