A narrow wide tooth pattern can be used to eliminate chain derailment and increase durability by thickening the teeth. At a fraction of the weight of the stock steel rings. The smaller chainrings than the original 46T are perfect for hilly areas and increase the efficiency using smaller gears. The end speed using the throttle is still high, because the motors spins faster. The big chainrings allow to pedal also at high speeds. Because of the Narrow Wide Design, the chain is holding much better on the chainring.
- Material: CNC 7075 aluminium, T6 heat treated, Anodised finish
- Teeths: 42 with Narrow Wide Pattern
- Compatibility: Fits Bafang BBS-HD Motor. Suits 7, 8, 9, 10, 11 speed chains (some SRAM chains do not fit, Shimano is fine)
- Chain Offset: 20,5 mm measured to the inside of the motor, for a better chainline
- Weight: 190 g
All aspects of performance and durability were considered during the design process.
When mounting, please make sure that the wide teeth are positioned at the outer link plates, the narrow ones at the inner links.
The inner hole has a diameter of about 41 mm, the circle of the chainring bolts has about 52 mm.