While we were doing a bike check on Angel Suarez' DH bike this afternoon in Rotorua, we noticed that he was running a Maxxis Assegai tire with a bit different look to it. There was an obvious "Test Pilot" hot patch that we haven't seen before and then more discreetly, the letters "ZK" next to a shield.
There wasn't a lot of information available from the mechanics other than it was a reinforced casing. Maxxis say that "Test Pilot is our test program for teams. It’s all special stuff that may or may not ever see full production. It could be compounds, casings, or protection that we’re testing. ZK is a new puncture protection material we’re experimenting with. That’s all we can say on that for now."