Bolt on the ultra-light high performance of Wilwood HP 32 vane rotors. These straight vane rotors offer an excellent balance of efficient cooling and long service life with low rotating and unsprung weight for hard-braking dirt tracks or rear-axle service on pavement cars. Wilwood HP 32 vane rotors are cast from premium-grade, long-grain carbon iron--a material that exhibits long wear, high thermal stability, and resistance to distortion in high heat. And the straight vanes make it possible to use the same rotor on the left or right hand mounting brackets. Experience added performance and smoother operation with precision Wilwood Ultralite HP 32 vane rotors.