Fits all Nissin and Triumph front 4 piston calipers on all (apart from Brembo) Triumph sports and touring models. Kit contains 8 seals (4 outer dust seals and 4 hydraulic seals) and x 2 joint seals. To equilize brake pad wear, these calipers use 2 different piston sizes, 30mm (leading) and 34mm (trailing). Use silicone or rubber grease during assembly after cleaning out any corrosion from the dust seal groove. The piston seals are genuine Nissin parts as used as original equipment by Triumph. These seals are also used in the 1/2 Nym spec. Triumph calipers. Made in Japan.