The HS-R080 hub is equipped with a special patented design. R080 is designed to fit the "pressure angle" bearing.
"HUMBIRD CS406 TI (Limited Edition)" Titanium Alloy Ceramic Bearing Limited Anniversary Edition"
HS-R071R hub set is in unique design with a functional feature:
The driving system of the rear hub is designed to be driven in one direction with zero angle engagement.
While driving, this hub s