Rennen 4-screw aluminum bicycle crown

Made at USA from machined 7075 aluminum, the RENNEN crown is unique thanks to the decimal gearing created by a slight modification of the crown's circumference. This allows you to modify your gear ratio by a fraction of a tooth, according to your needs for the BMX track you'll be riding on. It is designed to be mounted on a 4-screw crankset.

Features :

• CNC-machined 7075-T6 aluminum sprocket


• 4-point BCD attachment, 104mm diameter


• Decimal teeth


• Thickness: NC


• Chain pitch: 3/32


• Weight: 102g (44.2 teeth)