Where to buy new Spirit R brake rotors?
New From Mazda Motorsports
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
New From Mazda Motorsports
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
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New From Mazda Motorsports
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
I'm looking for Spirit R brake rotors, I checked out this site and it doesn't seem like they have it based on searching that part number you gave above. Any idea what I did wrong?
Joined: Mar 2001
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From: https://www2.mazda.com/en/100th/
New From Mazda Motorsports
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
RX-7 3RD GEN Brakes Caliper, Right Rear F1Z4-26-98Z
RX-7 3RD GEN Brakes Caliper, Left Rear F1Z4-26-99Z RX-7
3RD GEN Brakes Rotor, Rear F124-26-25XA
There should be two part numbers as there are front and rear rotors. The one you posted is that for the front or rear? I have RS brakes which are the same calipers, but I want the Spirit R cross-drilled rotors.
Rotors from JDM FDs that came with factory standard 17" wheels = 314 x 32mm. Apparently also contoured slightly to suit the unique piston setup in those cars (as the leading and trailing pistons are different diameters)
The extra thickness is IMO where you see a big benefit from the upgraded rotors / calipers
Spirit R rotors = as above for 17" wheel cars but are cross-drilled from the factory
Now, cross drilled ones are more prone to cracking (I've seen them crack around the holes on a friend's Spirit R after 1 track day!). But they certainly look nice.
The plain 314mm Mazda ones from the Type RS are much better quality than your average aftermarket large rotora and will last a long time.
Regular FD rotors = 294 x 22mm
Rotors from JDM FDs that came with factory standard 17" wheels = 314 x 32mm. Apparently also contoured slightly to suit the unique piston setup in those cars (as the leading and trailing pistons are different diameters)
The extra thickness is IMO where you see a big benefit from the upgraded rotors / calipers
Spirit R rotors = as above for 17" wheel cars but are cross-drilled from the factory
Now, cross drilled ones are more prone to cracking (I've seen them crack around the holes on a friend's Spirit R after 1 track day!). But they certainly look nice.
The plain 314mm Mazda ones from the Type RS are much better quality than your average aftermarket large rotora and will last a long time.
Rotors from JDM FDs that came with factory standard 17" wheels = 314 x 32mm. Apparently also contoured slightly to suit the unique piston setup in those cars (as the leading and trailing pistons are different diameters)
The extra thickness is IMO where you see a big benefit from the upgraded rotors / calipers
Spirit R rotors = as above for 17" wheel cars but are cross-drilled from the factory
Now, cross drilled ones are more prone to cracking (I've seen them crack around the holes on a friend's Spirit R after 1 track day!). But they certainly look nice.
The plain 314mm Mazda ones from the Type RS are much better quality than your average aftermarket large rotora and will last a long time.

What I meant was, if Wilwood/Brembo/etc made a 314x32mm rotor then could you not just use those? As opposed to searvhing far and wide for the mazda rotor.
I definitely agree on the drilled rotors!! I want to say I heard that a lot depends on if the edges are beveled or not, with the non-beveled being much more prone to micro cracking.
That, in and of itself, almost makes me want to lean towards slotted only in the future.
Last edited by fendamonky; Feb 6, 2021 at 06:25 PM.
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