Bead Socket Technology (BST) secures the bead of the tire creating an air tight seal while allowing the the tire's sidewall to expand to it's true

Extra large platform reduces hand numbness

Anatomically designed

shifters and derailleurs

Intended for city/comfort/hybrid bicycles

ZOOM Q-2 Quill to Threadless Stem Adapter - 22.2mm (1" fork) to 28.6mm (1-1/8" stem) closeout Bead Socket Technology (BST) securesZoom Q 2 & Q 5 are cold forged and allow a 23mm height adjustment. Cold forged aluminum, 23mm height adjustment Steerer Clamp OD 25. 4mm, for 1", 28. 6mm for 1 1 8" For installing threadless stems on a threaded fork Quill Insertion Diameter: 25. 4mm for 1 1 8" stems and 22. 2 for 1" stems