alpha Racing replacement rearset adaptor plate left side, shift, BMW S1000RR 2009-2011, 2012-2014, 2015- and HP4, for alpha Racing rearset system. 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.