Upgrade your e-bike with the 104 BCD Spider from e*thirteen, designed for seamless compatibility and efficiency. This spider allows the use of any standard 4-bolt chainring and provides a practical solution for the cost-effective and environmentally friendly replacement of chainrings. The spider is made from a durable 6-series alloy, combining lightweight strength with the flexibility to work with both durable steel and lightweight aluminum chainrings. Compatible with Bosch Gen4, Fazua Ride 60, Shimano EP8, and TQ HPR50 systems, it is the ideal choice to enhance your e-bike's performance.