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Join Date: Mar 1999
Location: Agawam, MA / Sarasota, FL
Re: Rotor center hole diameter?
The axle hub diameter you have is probably 2.80" and the rotor is 2.78" which is why they don't fit. I know Wilwood solves this problem by incorporating center registration adapters for their rotors. I believe my last rear disc kit came with 3.06" O.D. adapters for a 2.804" center registration (Rotors have a 3.06" center hole diameter). See index #18 in the photo.
USAF Retired (1968-1988)
UTC Aerospace Systems, Space Systems International - Retired (1989-2014)
Last edited by David Bates; Jan 16th, 19 at 10:13 AM.