Riders have been asking for a tyre that can enhance speed while giving them plenty of confidence while cornering. & by lowering the centre tread for high speed yet keeping much taller side knob edges for secure braking & cornering our Slaughter DH tyre is all but guaranteed to get you to the bottom first. Plus with butyl inserts at the tyre bead we even have you covered against pinch flats when the trail gets particularly rowdy. Weve found it proper for rear usage but it can easily be ridden as a front too. Casing: 60 TPI Dual-Ply Bead: Wire Compound: Base 70a / Top 42a Pinch Protection: Butyl Inserts at bead 26 x 2.3; psi 25-50; approximate weight 1135g 650b x 2.3; psi 25-50; approximate weight 1160g