Rim : 27.5" Mavic EN427, Tubeless compatible, 27mm wide, fits tires up to 2.6". Hub : Shimano SLX, FH-M7110, Shimano Microspline 12-speed freehub. Axle : 12x142 Thru-axle (Non-boost). --Designed for tubeless or tubetype mounting, the MAVIC EN 427 rim has a solid profile, making it ideal for particularly demanding All Mountain rides.