The Wilwood HD 48 Spec-37 curved vane rotor uses a proprietary iron alloy developed to resist distortion, warping, cracking and wear under extreme temperatures. HD Series preparation includes full-detail machining and smooth pad contact faces without slots for consistent braking engagement. The metallurgy is derived from Wilwood’s extreme-duty military-spec work to deliver durable thermal stability for demanding applications.
Wilwood Rotor-HD48 SPC-37-LH 12.88 x 1.25 - 12 on 8.75in