Ramped dual-block center tread paired with wide corner knobs designed for aggressive gravity riding. 3CG - 3C Maxx Grip offers the ultimate in grip and slow rebound properties for unparalleled traction in downhill applications. 2PLY - Two full 60 TPI casings with reinforced sidewalls intended for Downhill riding. TR - Tubeless Ready - sealant required. WT - Wide Track casing optimized for rims over 35mm internal width.