Trials fork 20" BONZ for trials bikes resp. model PRO LIGHT on disc brake. Tapered steerer tube for fork from 1 1/8" to 1,5" by crown. Light aluminium fork with Post Mount (PM) brake mounts for 160mm disc rotor (without adapter). Specialy shaped legs for better stiffness and stronger steerer tube with 4mm wall thickess. Made for standard hubs with 9mm axle and bolts. Fork weight 842g.