At DMG Motorsports, we present the Vortex Rear Sprocket Aluminum 45T-525 Silver for BMW (Part #193-45) — the CAT5 series sprocket that's earned its reputation as the "Standard" in professional road racing. Built to bolt directly onto compatible BMW S1000RR, S1000R, and S1000XR models, this sprocket pairs serious track-proven engineering with a clean silver anodized finish. Whether you're chasing lap times or simply want a stronger, lighter replacement for your stock sprocket, this Vortex piece delivers the strength-to-weight ratio that racers demand.

Features:

• CNC machined from 7075 aluminum for outstanding strength combined with significantly reduced weight versus steel
• Unique, patented Vortex tooth design engineered to increase sprocket longevity and improve power transfer
• 525-pitch, 45-tooth configuration designed to fit compatible BMW S1000RR, S1000R, and S1000XR models
• Silver anodized CAT5 finish for a clean, race-ready appearance
• Manufactured to tight tolerances for precise fitment and reliable performance
• Trusted and used by champions across professional road racing competition
• A go-to upgrade for riders seeking a durable, lightweight alternative to OEM sprockets

Fitment