Clutch Masters 14-18 Mazda3 2.5L FX350 Clutch Kit (Only Work With Single Mass Flywheel)
Clutch Masters 10775-HDFF-D is the FX350 clutch kit for the 2014-2018 Mazda3 2.5L (Skyactiv-G) six-speed manual, and Clutch Masters lists the same kit for the 2014-2018 Mazda6 2.5L six-speed. It is for owners who have gone past bolt-ons: a supercharger or turbo kit on the 2.5, a nitrous setup, or a car that runs autocross and track days and keeps cooking the stock clutch. Read the title carefully before ordering. This is the D version, built only to run against a single-mass flywheel.
The clutch sits between the 2.5L and the six-speed transaxle. The pressure plate clamps the disc to the flywheel, and the hydraulic release system pushes the diaphragm away when you press the pedal so you can shift. The FX350 combines a Power Plus I high-leverage heavy-duty pressure plate with a segmented, steel-backed Fiber-Tough disc, a heavy-duty sprung hub and a Marcel spring wafer. Clutch Masters places it above its FX300 for holding power and recommends it for highly tuned naturally aspirated engines, medium-boost forced induction or up to 100 hp of nitrous. The segmented Fiber-Tough faces take heat that an organic disc will not, but the price is a more aggressive bite and some chatter, so this is not the kit for a stock commuter car. The D means a dampened disc for use with an aftermarket single-mass flywheel; Clutch Masters makes a separate R version, 10775-HDFF-R, with a rigid disc for cars keeping the factory flywheel.
Included: pressure plate, FX350 disc, release bearing, pilot bearing where applicable, alignment tool and instruction card. Shipping weight is about 17 lb.
Load test it in fourth at about 2,500 rpm: floor the throttle and watch whether engine speed outruns road speed. Check the clutch fluid level and look for wetness at the slave before you blame the disc; a pedal that sinks or a clutch that will not release is a hydraulic problem. Our guide to diagnosing slipping takes you through the process, and the manual transmission repair cost breakdown helps you plan the whole job.
Clutch Masters lists 10775-HDFF-D for the 2014-2018 Mazda3 2.5L 6-speed and 2014-2018 Mazda6 2.5L 6-speed. In North America the 2.5L Mazda3 got the manual starting with the 2015 model year; 2014 US 2.5L cars came with the automatic, so a US 2014 2.5 manual is unlikely. The 2.0L Mazda3 is not on this chart. Because this disc requires a single-mass flywheel, plan on the aluminum flywheel below or an equivalent; if you want to keep the factory flywheel, you need the R version instead. Send us your year and VIN if you are unsure. Browse more kits in the rebuild kits and clutch category.
Pair the kit with the Clutch Masters FW-775-AL aluminum flywheel made for this car, install it following its instructions, and clean both friction faces. Lightly grease the input splines, center the disc with the supplied tool and run the pressure plate bolts down evenly in a crisscross pattern. Bleed the clutch hydraulics with the brake fluid grade printed on the reservoir cap and refill the transaxle with the manual transmission oil Mazda specifies. A manual transmission jack makes lowering the transaxle much safer. Follow the 500-mile break-in before any hard driving. If you want the same plate with a smoother disc, the FX250 Mazda3 kit uses a hybrid organic face.
| Brand | Clutch Masters |
| Part number | 10775-HDFF-D |
| Fits | Clutch Masters 14-18 Mazda3 2.5L FX350 Clutch Kit (Only Work With Single Mass Flywheel) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. The D version uses a dampened disc designed for an aftermarket single-mass flywheel. To keep the factory flywheel, Clutch Masters makes the rigid-disc R version, 10775-HDFF-R.
Clutch Masters lists the 2014-2018 Mazda6 2.5L 6-speed for 10775-HDFF-D as well as the Mazda3. Send us your VIN to confirm.
No. The 2.0L is not on the Clutch Masters application chart for this part number. It is listed for the 2.5L six-speed only.
It is street usable, but Clutch Masters says it bites harder than its milder kits and will produce some chatter. It is meant for boosted, nitrous or track-driven cars. The FX250 is the smoother choice for a mostly stock car.
The Clutch Masters FW-775-AL aluminum flywheel is listed for the 2014-2018 Mazda3 2.5L and is built to work with their single-disc kits.
Follow the Clutch Masters 500-mile break-in: normal driving, no launches or high-rpm engagement, so the disc and flywheel bed together evenly.
