Pirelli P ZERO Race TLR SL Tire - 700 x 26 Tubeless Folding BlackPirelli P ZERO Race TLR SL Tire 700 x 26 Tubeless Folding Black. The P ZERO Race TLR SL is crafted to pack the key benefts of tubeless technology grip rolling and handling into a race day tire emphasizing on speed and handling. SmartEVO compound uses a blend of three dierent polymers each of them providing specifc performance qualities to achieve the optimal balance of opposing characteristics such as grip and rolling resistance Tubeless Ready TLR