Zoom Q-5 25.4mm (1-1/8" fork) to 28.6mm (1-1/8" threadless stem)

Zoom Q-5 25.4mm (1-1/8" fork) to 28.6mm (1-1/8" threadless stem). Zoom 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