Continental grand prix 5000 road 23c tyres pairwe've put together this bundle of two grand prix 5000 23c tyres so you will be prepared for the big race. Incredibly durable, lightweight and built for speed, upgrade your current wheelset or keep one as a back up for whenever you need to go that extra mile. High performance blackchili compoundtaking the fantastic road performance of the gp4000 tyre and making it even better, this grand prix 5000 model utilises modern tyre technology to deliver their best road tyre yet. Constructed from continental's legendary blackchili compound, unparalleled grip and balance are assured, with strenuous lab and road testing showing tangible advantages to the modern cyclist.high grip road bike tyreequipped with other stunning advances including its impact absorbing active comfort build, a lazer grip micro profile along the outer edge for improved cornering grip and vectran breaker puncture protection, performance, rolling and reliability is taken to new levels by this unrivalled update.features includes x2 continental grand prix 5000 23c tyresmaterial blackchili rubber compound casing tpi 3 330 technology vectran breaker, lazer grip, active comfort tyre bead folding tyre type clinchertubeless ready nosidewall skinsize 700 x 23cweight 205g per tyretechnologies blackchili compound continental refines newly developed synthetic rubbers with natural rubber with the proven high performance tread compound. The gp5000 uses these rubbers with special nanometric carbon soot particles, which are optimised in shape and surface properties for best uses for the intended tyre. Tyres with blackchili compound reach an unprecedented level of performance. Compared to the previous best activated silica compound, blackchili tyres have 26% less rolling resistance, a 30% higher friction value grip and a 5% increase in mileage. Vectran breaker vectran is a synthetically manufactured high tech fibre from a natural model. Like spider silk, vectran is a liquid crystalline polymer lcp. Vectran is spun from melted liquid polymer vectra and processed further to a multi strand thread. Spider silk, like vectran, has an enormous tear resistance at a very low weight ndash exactly the right properties to process into a premium continental bike tyre as a puncture protection insert. A vectran breaker is lighter, more flexible and protects more effectively against cuts than the comparable nylon breaker. Vectran breaker does not adversely affect the rolling resistance. Active comfort technology the revolutionary approach in cycling. Embedded in the tire construction the active comfort technology absorbs vibrations and smoothens your ride. Lazer grip lazer grip, to make you one with the road. The lasered micro profile structure expands over the tires shoulder and provides outstanding cornering.buy continental wheels tyres from chain reaction cycles, the world's largest online bike store.