Super-9 Track B1 Gravel while 1x-specific chain retention technology

while 1x-specific chain retention technology keeps the chain where it needs to be

Laser-etched for easy part identification

Tapered inner sleeve to ensure a snug interface with the handlebar

Lateral daisy chain for modular set up

Bottom Bracket: Not Included

Super-9 Track B1 Gravel while 1x-specific chain retention technologyClincher rim designed specifically for the velodrome Small hook tire bead designed for aero efficiency, and track specific carbon laminate Fastest with 23mm tires on the velodrome The wheel remains flat from its widest point to the hub and features a proprietary textured surface SRAM Model ID: WH SP9 TLTK B1 Attributes Axle Type Bolt on Freehub Body Fixed Hub Model ZR1 Track Rim Color Black Rim External Width 27. 5mm Rim inner width range 0 21. 9mm