Clutch Masters 07-13 Mazda 3 Mazdaspeed 725 PRO Series Twin Disc Clutch w/Steel Flywheel
Tuned Mazdaspeed3 owners usually find the limit of the factory clutch the same way: a hard pull in fourth, a flare on the tach and a smell coming through the vents. Clutch Masters part number 10306PTD7RS is the 725 PRO Series Twin Race clutch with a steel flywheel for the 2007 through 2013 Mazdaspeed3. It is a compact 7.25 inch multi-disc unit built for big-turbo and ethanol cars, and it is meant for drivers who accept race-clutch manners in exchange for holding power.
The Mazdaspeed3 sends the output of a turbocharged 2.3-liter MZR through a six-speed manual to the front wheels, and the factory clutch is sized for stock boost. The 725 PRO solves the torque problem with two small ceramic friction discs rather than one large organic one. Because each disc is only 7.25 inches across, the rotating assembly carries less inertia than a larger clutch, so the engine revs and falls more freely between shifts.
In the Clutch Masters part number, PTD7R means the Twin Race stage, two rigid ceramic discs, and the trailing S is the steel flywheel. Clutch Masters rates this kit at an estimated 700 ft-lb and lists the 7.25 inch PRO clutch pack, an alignment tool, the steel flywheel and a release bearing as included. The PRO design replaced the six aluminum posts of the older FX 725 with twelve heat-treated 4140 steel stands, because aluminum posts flexed and wore under race loads. The steel flywheel is machined from a 1045 billet core and black-oxide treated, and Clutch Masters states that its PRO kits are SFI certified. This is a conversion kit: it will not work with the Mazda flywheel.
A clean slip test is a full-throttle pull in fifth or sixth from low rpm while you log engine speed against vehicle speed. If rpm climbs while speed does not follow, the clutch is slipping. Check the hydraulic side before blaming the disc, since a slave cylinder that does not fully return or air in the line can cause similar complaints, and look for oil at the bellhousing seam. Then decide how much clutch you need. A street-biased twin such as the 7.25 inch twin disc street kit is gentler, while the 850 PRO version adds diameter for even more power. Our manual versus automatic repair cost guide helps estimate the shop time.
Our listing covers the 2007 through 2013 Mazdaspeed3, both generations, all with the turbo 2.3 and six-speed manual. Clutch Masters also lists 10306PTD7RS for the 2005 through 2007 Mazdaspeed6 with the 2.3 turbo. It does not fit a non-turbo Mazda3. If the car has a different transmission or a modified bellhousing, send us the year and VIN before ordering. More clutch kits are in our rebuild kits department.
| Brand | Clutch Masters |
| Part number | 10306PTD7RS |
| Fits | Clutch Masters 07-13 Mazda 3 Mazdaspeed 725 PRO Series Twin Disc Clutch w/Steel Flywheel |
| Vehicle fitment | Mazda 3 Mazdaspeed 725 Pro (2007-2013) |
| Type | Clutch Kits - Multi |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes. It is listed for 2007 through 2013, which covers both Mazdaspeed3 generations.
Clutch Masters lists the same part number for the 2005 through 2007 Mazdaspeed6 with the 2.3 turbo. Send us your VIN if you want it checked.
No. Clutch Masters builds this as a conversion kit that works only with its own flywheel, and the steel flywheel is included.
Clutch Masters gives an estimated torque capacity of 700 ft-lb for this kit.
It can be driven on the street, but rigid ceramic discs engage quickly and make more noise than a stock clutch. If the car is mostly a commuter, a sprung organic or street twin kit is easier to live with.
The 7.25 inch PRO clutch pack, an alignment tool, a steel flywheel and a release bearing, per Clutch Masters.
