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108mm
What is the mounting bolt pattern on the front hubs to mount the Rotor?
4 on? what thread?
While Mark gave the PCD, the measurements are correct the 4*108 and 4*4.25 are the same pcd.Don't think there were any metric dimensions on Series Alpines. In any case, 4 on 4.25" is the wheel lug pattern, not the rotor-to-hub bolt pattern.