Brompton wheels & drivetrain specialist

Chain Pusher Parts for converting Brompton stock chain pusher into a 4-speed

The fixed metal blades on the stock chain pusher is replaced with ones that can freely rotatie, thus extending its operating range. The stock wing plate is also repalced by one with revised lower and upper limits.  

These chain pusher parts are designed to work with the BrommiePlus 4 speed shifter internals. The cable pull requirement of this chain pusher is non-linear, and is not guaranteed to work with other shifters.

Made from quality material for durability. The base plate and wing plate are CNC machined from 304 stainless steel. The CNC'd alloy arms are wear resistant 7075, and can be replaced independently when worn. 

Product Content:
- Chain pusher parts assembly, 
- Wing plate, 
- Replacement mounting screws, 
- Optional longer tensioner axles.