hjc fg-st crono helmet (CL-ST GUARDIAN MC-2) – Hyosung Wholesale HJC F100 Carbon Stan Helmet

With a radius of 75mm (about 2.95 in) or more, a rounder and smoother outer shell can slide more easily over uneven ground and glance-off impact energy to minimize the amount of impact energy going into the helmet

The vents arent massive but are aided by the channeling when moving, it is a bit warmer when slogging up a climb

This reduces glare and enhances visibility, increasing riding safety

With a strong spring clamp and space for ACID mudguards, it's fully compatible with RI-Link components for additional storage needs

Best a framebuilder could do is replicate the geometry, using tubing that in their opinion comes close