SRAM Post Bracket 20 P 2 Disc Brake Adaptor - For 200mm 220mm Rotors Only Includes Bracket Titanium Bolts MFPN=WH19NXSLBST2629F Most droppers work great with

Most droppers work great with both and it comes down to personal  preference on the firmness of the lever feel and extension of the lever over the grip

Fits all SWIX Irons

allowing the lever to break away from its base in the event of a crash

Fairly light

SRAM Post Bracket 20 P 2 Disc Brake Adaptor - For 200mm 220mm Rotors Only Includes Bracket Titanium Bolts MFPN=WH19NXSLBST2629F Most droppers work great withSRAM Post Bracket 20 P 2 Disc Brake Adaptor For 200mm and 220mm Rotors Only Includes Bracket and Titanium Bolts. SRAM Avid Post Mount disc brake caliper mounting adaptors provide alternative mount positioning that allow the caliper to be used with different sized rotors than used on the frame or fork caliper mount. TECH SPECS Brake Caliper Type Post Mount