The chassis uses 28mm tube, Tillet seat and 3.5 litre fuel tank. Pedals, side seat mounts, brakes (6-piston calliper), axle bearing mounts and running gear are all gold-anodised billet alloy. Independent caster and camber adjustment, ride height adjustment and removable front bar make this kart very tuneable. The R6BJ comes standard with 40mm axle, 16mm double-skin ventilated disk, Futura alloy rims and a choice of short or medium rear hubs.