Wilwood Master Cylinders, which size is which?

[Warmie]

So imagine you had Wilwood brakes front and rear, and when you unboxed the master cylinders and mounted them up to the pedal box you realized you forgot which one was the 5/8” front and which the 3/4” rear? I don’t see any markings on either and they look exactly the same! Anyone know the easy way to determine which is which?

Thanks,
Warmie

[Straversi]

.625 or 0.75 should be cast in the side of the master cylinder, just in front of the Wilwood logo. Its in a circle about 1/4" in diameter. Easy to miss.

-Steve

[Warmie]

Great, thanks Steve!

[robertjamesellis]

Hey Warmie,

I think you had these mixed up in your first question. 3/4" is for the front and the 5/8" is for the rear. Page 197 of the manual I have. This one had me stumped too!

Rob