Unlock the full potential of your Bosch Performance Line CX (Gen2/3/4) or SX-powered e-mountain bike with the NSB 104 BCD Spider. This precision-engineered component is the ultimate upgrade for riders seeking optimal performance, custom gearing, and a flawlessly aligned drivetrain.

This component delivers a perfect 52mm chainline, ensuring buttery-smooth shifts, significantly reducing drivetrain wear, and maximizing power transfer from your motor to the rear wheel. Experience quieter operation and more efficient pedaling, whether you're tackling steep climbs or charging technical descents.