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). 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 joint seals on the 2 halves are now also included. 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.