SRAM Post Bracket 20 P 1 Disc Brake Adaptor - For 160mm 180mm Rotors Only Includes Bracket Stainless Steel Bolts ModelNumber=E3581 smaller diameter springs might fatigue

smaller diameter springs might fatigue before the carbide tip wore down

Note that only about 3 threads will engage (same with the stock SRAM rings)

This sponge also stays saturated maximizing the use of the bottle

Includes Drop Bar Fit Kit to customize fit for larger-diameter road handlebars

SRAM Post Bracket 20 P 1 Disc Brake Adaptor - For 160mm 180mm Rotors Only Includes Bracket Stainless Steel Bolts ModelNumber=E3581 smaller diameter springs might fatigueAdapts Avid 74mm calipers to 74mm post mount frames and forks Most adapters do not include CPS non CPS mounting hardware (+hardware kits include applicable stainless steel mounting hardware) Non CPS hardware used on 2012+ XX series and 2013+ XO series brake designs for reduced weight (+ 20mm) takes a 160mm PM fork frame to 180mm, or a 180mm PM fork frame to 200mm (+ 40mm) takes a 160mm PM fork frame to 200mm, a 180mm PM fork frame to 220mm TECH SPECS