7. Available with either a stock height or 2-inch drop, Wilwood Pro Spindles are standard on all REVO systems. Forged construction makes them three times stronger than comparable cast spindles and advanced geometry gives improved handling. Along with Wilwood’s reputation for quality, a vast line of brake systems are also available from 11- to 14-inch diameters. The Pro Spindles also allow the use of 15-inch wheels, and are strong enough to accommodate the larger brakes and wheels desired in today’s market.