The new pulley H0101-S is Z37 which is 37T.
We decided to increase the tail ratio a bit to improve tail performance and authority.
new tail gear ratio is 4.67:1
Old gear ratio is 4.53:1
Old pulley H0016-S is 36T and new pulley with screw
All new kits are now with H0101-S pulley.
We have sent all new H0101-S to distributors for replacement of H0016-S.
All customers from our website will be receiving our new pulley soon directly from us.