Due to curing, duraluminum almost reaches the strength of steel.
Accordingly, lower weight and a higher resistance have been adopted.
Milling in the tooth base of the sprocket guarantee optimum self-cleaning.
These milling operations ensure that the dirt can not settle between the teeth and thus the chain and the sprocket do not wear so quickly.
The durability of the ZF dual chain wheels is about three times longer than pure aluminium chain wheels and are 50% lighter than steel chain wheels.