This spider mount sits between the Gen 4 CX Bosch drive unit and the outer 4 bolt chainring. Compatible with the Bosch Gen 4 Performance line CX. This is the Non-Boost version with no additional offset. If you need the offset 'Boost' you can find it by clicking Bosch Boost Spider.
The Bosch Chainring Spider is the latest generation of performance-oriented chainring spider devices for the Bosch CX Gen 4 eBike drive system. Its patented design connects the motor to the chainring, making for a reliable and powerful ride. Experience increased efficiency and effortless biking with every ride.
Allows the motor to take a standard 104 BCD chainring. Chainring bolts not included.
Be aware this is non-boost
Purchased for my Decathlon Stilus, less weight even with new Chain ring.