Post Mount Disc Brake Caliper Adapter - 20mm for 180mm Caliper

• Post Mount Adaptor.
• CNC machined anodized aluminum alloy.
• Use for install 200mm 203mm rotor caliper on 180mm PM post; also use for install 180mm rotor caliper on 160mm PM post.
• Compatible with 74mm fork/frame post mount.
• Package included: 1pcs Post mount adapter, 2pcs mount bolts with spacers whashers.

How to buy the correct disc brake adapter?
1. Comfirm your bicycle frame is POST or IS.
2. Confirm the installation location, you want to install it on the front fork or rear frame.
3. Confirm the size of the brake caliper.