Developed and tested at the Grand National Cross Country Series, the SI is the perfect tire for any intermediate, loamy or muddy terrain. The SI is proof that Maxxis takes performance and durability to a whole new level.
Race-proven rubber compound
Anti-flex knob bridges on side lugs
Delivers excellent traction in soft/intermediate conditions on the motocross track or off-road
Offer solid straight-line stability and enhance grip for aggressive cornering