quote:That's great Larry. Vented rears as well. Excellent.
Indeed
The 121.61053 says that it is a C-Tek standard rotor.
The 120.61053 says that it is a Premium Rotor - Preferred. I take it that they are better in some way?
.........As noted in the text, the company stated difference is said to be a better casting and a black paint 'e' coating. In my case, they both were the same higher grade casting, just one had the 'e' coating.
You used a front Mustang rotor on the rear and found it to work just fine?
.........Yes. Read the text with the photos closely. There is a diameter difference. It will result in some unswept pad on the rear. In practice, this is not really a problem. If it concerns you, take them to a machinist and have them turn them down to match the OEM diameter.
So both numbers are from the FRONT of a Mustang?
..........Yes, but again, read text closely. Due to continuing difference in suppliers, make SURE the #'s currently match to just the rotor, not the one-piece hub and rotor unit.
Measuring my rotors, the height of the hat from face of disc to mounting surface on the front are 36mm yet the rears are 40mm. This 4mm variation seems a lot and I would have thought that it pushed the centre line of the rotor back 4mm in towards the centre of the car?
.............I found the height of the new rotors to match the old rotors. They created no change in rotor position as far as centering in the calipers.
I was able to knock out the metric studs and drive them into the new rotors.
A very basic upgrade procedure with only minor issues.
Larry