SPEC

I bought a 2008 Mustang Shelby GT 500 and replaced the old bad clutch with a SPEC Stage 3 Clutch and Stage 3 flywheel. I picked up my car and drove home for about 10 miles. I noticed that there was making small amount of chatter like it says for a racing clutch. However, trying to take off in first gear. The car vibrates so hard it looks like my entire dash was tearing its way from the car and vibrating apart. If I didn’t move at 2k rpm to take off it would stall out. Since Replacement I drove on back roads not exceeding 50 MPH because I was told gentle break in, so I was babying my car. I took back to the shop the next day and they said it was normal but it is not. So I drove to work and after getting off work, was on my way home and while driving at a steady 40 mph with cruise control, the car starts high revving and will no longer move under its own power. I coast off to the side of the road and try to start to move in all gears to include reverse and nothing. Clutch is slipping. This stage 3 clutch is supposedly rated for almost double the horsepower and double the torque of my BONE STOCK Cobra. nothing different about how it came off the assembly line. Strong Racing Clutch my ass. 60 miles and $ 2000 later my $ 45 000 Cobra is stranded again. WASTE OF MONEY AND DO NOT RECOMMEND!!! HORRIBLE CUSTOMER SERVICE AND HORRIBLE PRODUCT!
What a way to treat customers! Especially being a Staff Sergeant in the Army that needs his daily driver fixed and relied on SPEC parts to be able to get back to work. It also takes weeks for parts to arrive. I was out of having my car for two weeks the first time and now it will be weeks before I get new parts. So thanks SPEC.

I should have done my research and read all the horrible things about SPEC automotive clutches before putting my hard earned money down on one. Fortunately I bought through another vendor who is going to help me replace this SPEC piece of junk clutch with an Exedy or ACT clutch.
The clutch is made poorly with very cheap materials and the clutch chatters, shudders and causes driveline noise like crazy. My poor Mazda feels like it is shaking apart at low speeds in first gear. I just read about a poor Subaru owner with the same issues online.
The vendor I bought from no longer is carrying SPEC products because of the horrible dismissive customer service they experienced. I called SPEC myself and they just dismissed my concerns, said everything was normal and made it seem like I was the one at fault.
Verdict: If you love your car, don’t hurt it with a wretched SPEC product.