This is what we are proud of. the choice of the most technologically advanced raw materials and crafted by expert hands. The masterpiece of our production! Modeled on its predecessor Servizio Corse and more performing thanks to years of experience. A pro-competition tubular with outstanding grip and low rolling resistance. Its tread grants great cornering stability and traction control both on dry and wet roads. The 350TPI corespun will give you the best available weight, resistance and comfort. Extreme comes with black coloured sidewalls for a more aggressive look that will match perfectly every wheel. Use Road Racing. Weight 240 gr. Mileage Front 5.000 km Rear 2.500 km TPI 350 Threads Per Inch 140/cm , Valve Presta 42 mm with changeable core Pressure 7/10 bar 100/145 psi , Inner tube Latex low rolling resistance Protection Belt Calicot puncture resistant layer Casing Compressed Pes/Co corespun. Rubber tread Natural rubber exclusive compound