Poly Chain System For Crank Shop Chain Case

The poly chian system is designed to be used with The Crank Shop rolled chain case. It has a 2:1 ratio but more will be available at a later date. The sytem is 3 pounds lighter. The poly chain system weighs 2.6 pounds compared to 6.2 pounds with the traditional gear & chain system using The Crank Shop rolled chain case. The price does not include The Crank Shop rolled chain case