Cush Core is a foam insert for your tubeless wheelset. The inserts provide rim and sidewall protection, damping, and cornering efficiency. The damping provided by Cush Core also reduces rider fatigue and allows riders to run lower psi levels in their tires for increased traction.
27.5″ Pro size designed for use in 27.5″ Mountain wheels.
From the Cush Core website:
CushCore PRO fits tire widths 2.1″ to 2.6″ and inner rim widths 22mm to 35mm.
Includes (2) CushCore tire inserts, (2) 44mm CushCore presta air valves, valve core tool, installation instructions, and rim stickers.