alpha Racing Rear Caliper WSBK Relocate Kit (64mm or 68mm) BMW S1000RR/HP4 (2010-, 2015-), for brake caliper to be mounted below swing arm, for use with Brembo P4 rear caliper, hole distance 64 or 68mm, integrated wheel sensor adaptor (OEM), chain adjuster bolts, CNC machined, black anodized billet aluminium with alpha Racing logo, fits OEM swing arm. Lowers centre of gravity by relocating the brake caliper and hardware from above the swing arm to below the swing arm. alpha Racing utilizes state-of-the-art computer automated design and experience in World Superbike Championship and brings you the very best in BMW S1000RR/HP4 billet parts. These special parts are high speed CNC machined, completely milled from high-strength aerospace grade billet aluminium and hard anodized for superior finish, ultra-lightweight and extreme durability. Weight: 0.45 kg.