Boss Contrast Cut Rotor
High grade 420 stainless steel replaceable outer bands and Billet aluminum CNC-machined inner carriers
Cross drilled bands for increased ventilation and blanchard ground bands ensure precise and even tolerance
11.5" and 300mm rotors are fixed
Rear rotors are drilled for standard HD bolt pattern 3-1/4 X 5 X 3/8
All rotor carriers are counter bored with 2.22 I.D
A reducer spacer (part# 1710-0636) is sold separately for 1.985 I.D.
Wide rear wheels require use of rotors with 2.50 I.D. RSD rotors will fit 1984-1999 HD applications only if used in conjunction with Performance Machine calipers and RSD wheels. RSD rotors will not work with stock HD wheels