The Bosch E-Bike Sprocket Connex is an upgraded chainring made in Germany specifically for all Bosch E-Bike systems, giving you the capability to change the gearing ratios on your Bosch equipped E-Bike. Customize your Bosch Gear Ratios A perfect upgrade if you find yourself running out of gears while going downhill, or if you find yourself using the smaller sprockets on your cassette often. A high-quality manufacturing and hardening process ensures the Bosch E-Bike Sprocket Connex is extremely wear-resistant and more durable than the original Bosch chainring. Bosch E-Bike Sprocket Specifications - 14,15, 16, 17, 18,19 & 20 tooth options- Pitch 1/2" (12.7mm)- 2mm thickness- For Gen2 Bosch motors (BDU2xx) Shop online Bosch E-Bike Sprocket Connex at Scooteretti