SRAM - Avid IS Frame Or Fork To Post Caliper Brake Mount - R 140-200mm - Mount - 60mm Increase Virtual Parent Park BBT-29 Double Ended 39

Park BBT-29 Double Ended 39 48

If you like working with quality tools

to fit with Boost (15x110) forks

SRAM have made it incredibly simple by integrating the relationship between chainring

SRAM - Avid IS Frame Or Fork To Post Caliper Brake Mount - R 140-200mm - Mount - 60mm Increase Virtual Parent Park BBT-29 Double Ended 39Genuine Avid brake mount for IS (International Standard) frames and forks. F 160 180mm R 140 160mm 160 180mm: Accommodates 180mm rotors on fork 160mm on frame. Includes required hardware F 160 200mm R 140 180mm 160 200mm: 40mm adaptor. Adapts post mount forks to run a 200mm brake rotor or 180mm brake rotor on the frame. R 140 200mm: 60mm adaptor. Adapts your frame to be able to run a 200mm rear brake rotor.