P Zero Race Tub Sl Is The Result Of An Endless Research And Development Process On Advanced Materials A Racing Tubular That Provides The Same Speed And Handling Performance Of Its Predecessor, With A Record-Breaking Weight (35g Less For A Total Of 275g). The Perfect World Tour Weapon. We Obtained The Same Performances Offered By A Standard Latex Tube At A Lower Weight Using An Innovative Tpu Inner Tube, Giving Our Athletes An Unexpected Advantage. P Zero Race Tub Sl Sets A New Standard For Racing Tubulars, Both For World Lour Athletes And Amateurs Features:- Grip- Lightness- Speed- HandlingSpecifications:- Weight: 280- Casing: 320 Tpi- Anti-Puncture: BreakerTechnology:Compound:- So Far The Most Advanced Racing Chemical Formulation For Road Use, It Was Born From The Motorsport Experience Of Pirelli And The Collaboration With The Factory World Tour Teams. The New Smartevo Compound Features A Single-Compound Formulation Based On Three Different Polymers, Each Of Which Provides Opposite Performances In A Perfec Blend. The Advanced Mixture Of Polymers With ´Smart´ Behaviors Are The Key Elements Of The Smartevo Compound, Providing Better Grip And Rolling Resistance In Any Weather Condition. The Smartevo Compound Is An High-Performance Chemical Formulation Developed For Modern Road Cycling, From Everyday Training To World Tour Racing. Smartevo Compound Is An Exclusive Feature Of The P Zero´´ Range