ProTaper Vice Stem Clamp Diameter:31.8mm the ATR Pro delivers benchmark

the ATR Pro delivers benchmark aerodynamics

All Bubba Hubs Axle Kit

Built around our Ringle Bubba hubs carrying on the tradition of Ringle durability

along with IVA volume adjustment that allows for fine tuning of the air spring curve that adapts to an extremely wide variety of conditions

Summit Axle

ProTaper Vice Stem Clamp Diameter:31.8mm the ATR Pro delivers benchmarkOn the surface, a stem may look simple, but under that beautiful veneer lies hours of 3D modeling, countless FEA revisions, and tons of real world ride testing. We do all of this to make sure we have a light, stiff stem that can handle tremendous forces from every conceivable angle.