Challenge, Gravel Grinder Race, Tire, 700x38C, Folding, Clincher, Vulcanized, Nylon, 120TPI, Black U-Brakes Barcode: 840840009821

Barcode: 840840009821

Barcode: 689228211155

Model: MTOPEAK37

Model: MPROTECH14

Challenge, Gravel Grinder Race, Tire, 700x38C, Folding, Clincher, Vulcanized, Nylon, 120TPI, Black U-Brakes Barcode: 840840009821Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast rolling diamond center with aggressive shoulder knobs that only hook up when the terrain gets soft, muddy, or a bit sketchy. This clincher with 120TPI nylon casing provides both performance and durability. Includes PPS, a Puncture Protection System placed between the tread and casing to increase resistance to punctures. Brand: Challenge Model: Gravel Grinder Race