P Zero Race TLR 4SWhat's the secret to our tyres? Let's take a look at some of the motorsport derived technologies applied to our cycling tyres. The PZERO Race 4S TLR is our first ever year long racing tyre with a tubeless technology able to provide a high grip in all kinds of weather and an increased puncture protection, still maintaining the racing feeling characteristic of our PZERO Race range. This result has been achieved thanks to the SPEEDCORE tubeless