Some of the greatest roads in cycling arent particularly well paved sometimes the fact that they arent manicured like a golf green is part of the charm or maybe all of it todays bikes handlebars and other components are stiffer than ever but the emergence of disc brake technology has created an opportunity for riders to run a high performance 28mm clincher zipp introduced the speed r28 to give riders a race ready tyre for those days when you want all the performance of a top of the lin