Ochain S Active E-Bike Spider SNB55

- Easy system adjuster allows the degrees of rotation to be changed externally\n- Allows rotation at the spider, reducing the effects of chain growth that reach the riders feet. This results in the feel of riding chainless\n- Reduces the negative effects of chain growth on suspension performance\n- Requires a 104 BCD chainring. Fits 32-36t chainrings\n- Chainring bolts sold separately