Crank Hubs

BDS Crank Hubs are made from 4100 series aircraft alloy hardened steel, designed to replace the stock factory harmonic balancers for blower applications only and are necessary for proper operation and longevity of the complete blower drive assembly. 

All BDS crank hubs come equipped with a stock size keyway and a 1/4" keyway located 180 degrees from the stock size keyway. 

(Key stock material is not supplied)