Original equipment replacement Bontrager Mustang Pro 27.5 Boost wheels. Stacked lacing alignment provides a better spoke bracing angle for a stiffer wheel. Convert to tubeless with TLR rim strip and valve, sold separately. 15x110mm front and 148x12mm rear axle options. Compatible with Center Lock disc rotors. Comes with Shimano 9/10/11-spd freehub, with SRAM XD available separately.