The Newton MTR (Mountain Rear) is part of our range of mountain tires designed for gravity disciplines. The tire that feels best on the rear wheel will give you instant acceleration as you sprint from the start of your race. With the MTR on board, you'll feel confident as you attack those loose sections, hold your line on rocky descents, and fly down rocky sections. The drive-oriented profile offers speed and durability, while the handling characteristics give you the confidence you need. Technology: Tubeless Complete™ + EN:Wall + 2x120TPI Recommended for internal widths from 21mm to 40mm Rear specific triple density 40/50/60a compound offering a balanced level of grip and tread wear. EN:Wall - A butyl layer within the carcass ply that provides cut and abrasion protection and additional si.