Challenge Triathlon Tubulars Add Double Puncture Protection
Challenge has added dual layer PPS2 puncture protection to its triathlon tubular tires. The system places a narrower strip of PPS (gray) directly under the tread, above the casing, and a second, broader strip (red) between the casing and the innertube.
They say that, plus the tightly woven 300tpi SuperPoly casing and elasticity of the seamless latex tube, provides all the peace of mind you’ll need to use them for the big race day. The tread is a grippy natural rubber.
They’re available in 700×22 and 700×24 tubulars and a 700×23 Open Tubular (clincher), with weights coming in at 260g, 260g and 215g respectively.