Ultra-Light UL32 HP straight vane rotors provide high value performance and rugged durability for a wide range of competition, high performance and sport driving applications. Don't confuse these rotors with bargain priced off-brand named parts. Wilwood's modern manufacturing capability, combined with large scale economy, make it possible to offer this level of quality and performance at such an affordable price. These HP (high performance variants benefit from precision machines faces with less than .0.01" variation in flatness, parallelism and run outExcellent performance at an affordable priceHigh resistance to warpingPrecision machined faces for improved performanceEvery Wilwood rotor is cast from premium grade, long grain carbon iron. This material exhibits long wear, high thermal stability and excellent resistance to distortion in high heat. Modern foundry and machining techniques hold close tolerances on face and vane thickness. Combining the correct face thickness with a 32 van