Duro Tire's Razorback downhill mountain bike tire is set to perform. With the Hook Up bead system, you have additional protection for your rim while providing extra security for the tires bead. The Apex sidewall design adds a specially developed rubber compound layer between the sidewall and bead area to help prevent snake bite pinching and provides protection against sidewall punctures on the trail. You can attack a down hill run knowing the bead is set and the sidewalls can take a little extra punishment. The Razorback is designed for rocky and rooted trail riding in all conditions. It features aggressive side knobs for cornering bite and interlocked center lugs for better rolling efficiency. The deep staggered knobby design is self cleaning adding extra grip and traction when you need it most.