Brembo GP4-RS Monoblock Caliper (108mm Spacing)BREMBO'S NEW GP4 RS MONOBLOC CALIPER (108mm Spacing) Please check bolt spacing on your bike before ordering. Inspired by the monobloc caliper developed for MotoGP and now available for bikes with 108mm radial mounting. Because of the small diameter pistons (4 x 30mm) the GP4 RS caliper works at its best in combination with a 17RCS Master Cylinder. The new Brembo GP4 RS One Piece caliper, presented at EICMA 2016, completes the range of Brembo calipers
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