Experience elite- level performance with the Box One Stealth Pro Oversized 20mm Disc Rear Hub , featuring advanced Stealth Technology™ for instant power delivery , silent coasting , and ultra- low drag . Built for serious BMX racers, this hub delivers infinite points of engagement , giving you lightning- fast responsiveness with every pedal stroke. The CNC- machined 7075- T6 aluminum hubshell and axle offer exceptional strength without added weight, while the hardened steel driver ensures long- lasting durability. At its core is a German- made precision one- way roller bearing , delivering smooth, dependable engagement under pressure. Designed with angled flanges , 36- hole drilling , and a sleek dual- texture anodized finish , this hub blends strength, style, and race- proven function. Uses an OS spline driver compatible with box OS cogs and other oversized cogs and lockrings like the Onyx Ultra SS line. The 6- bolt disc brakes fit a 20mm x 110mm axle and is convertible to 15mm or 10mm with an optional kit. This hub includes the Box One Oversized 20mm Rear Lockring , the Box One Stealth Pro Oversized 20mm Disc Rear Hub is built to dominate the gate with stealthy speed and total control. View Whitepaper: Box® - Stealth Hubs Whitepaper 06.12.25