If you are in need of an IS(International Standard) Caliper Brake Mount then these Shimano options are an excellent choice. These are required if your frame or fork has an IS mount and to fit your caliper and/or adjust your rotor size.

Features:

• IS: 51mm International Standard
• Shimano Post to Rear Mount Disc Brake adaptor
• Precision engineered disc calliper mount adaptor
• Interchangeable
• Mounting accessories included

F 160-160mm: Accommodates 160mm rotors on an IS 160mm fork. Includes required hardware

R 160-160mm: Accommodates 160mm rotors on an IS 160mm frame. Includes required hardware

F 160-180mm: +20mm adaptor. Accommodates 180mm rotors on an IS 160mm fork. Includes required hardware

R 160-180mm: +20mm adaptor. Accommodates 180mm rotors on an IS 160mm frame. Includes required hardware

F 160-203mm: +43mm adaptor. Adapts post mount forks to run a 203mm brake rotor.

R 160-203mm: +43mm adaptor. Adapts your frame to be able to run a 203mm rear brake rotor.