Sim HEADS Frame Largely a courtesy for riders

Largely a courtesy for riders behind you on your soggy commute or in a pace line

We have added 470mm & 490mm options

A Circles-exclusive Hanafuda-engraved model of the Nitto B177

but as a color that has actually been chosen by many people

Sim HEADS Frame Largely a courtesy for ridersSimWorks is proud to announce SimHEADS by Tangeseiki, a premium headset developed in collaboration with one of Japans most respected precision component manufacturers. Based on Tangeseikis Classic modelthe most durable and precise offering in the Technoglide seriesSimHEADS is custom specified to meet SimWorks performance and durability standards. A bicycle does not turn simply by changing the direction of its wheels; it turns by tilting. This process,