MAXXIS Detonator Roadrace High-quality racing tyre with "Grooved Slick" tread and dual compound silica tread with low rolling resistance, very long mileage and good cornering grip. Puncture protection with MAXXIS Silkworm Breaker. The Detonator 1.25 is a narrow, very light MTB road tyre for training or fast city use. In version 1.50 the Detonator is a stable slick tyre for MTB training on the road.