Shimano BMR1 and BRM2 Di2 External Battery Mount Base Unit A CheckoutSpec= and Bushing Assembly Kit A more compact and lighter

A more compact and lighter version of the original e-pump that delivers up 80psi in just 60 seconds

safe riding experience for kids

Safety is the key with integrated reflectors and a LED taillight at the back ensuring high visibility of the cyclist during the day and night

Works great under helmets

Shimano BMR1 and BRM2 Di2 External Battery Mount Base Unit A CheckoutSpec= and Bushing Assembly Kit A more compact and lighterShimano Di2 External Battery MountsAll Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com