Kenda Booster Pro Tire - 700 x 37 Tubeless Folding Black 120tpiKenda Booster Pro Tire 700 x 37 Tubeless Folding Black 120tpi. The Booster is a World Cup proven XC race tire that is aggressive enough to push traction to new limits. On top of that it is also one of the fastest and lightest XC tires on the market. You no longer want to choose between a XC tire that is either fast and light or provides great traction? The all new Booster combines the best of both worlds. Modern and aggressive look optimized for fast