• Wilwood’s HD 48 Curved Vane Spec-37 rotors are are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear.
• The formulation for this alloy is a derivative of technology and materials that were significant in the development of the extreme duty military spec rotors that are manufactured by Wilwood.
• Every Spec 37 rotor is precision machined to less than .001″ run-out, flatness, and parallelism.
• The HD Series preparation includes full detail machining and smooth pad contact faces without slots.

SKU: 029 160-1349X