Does anyone know what model bike the 2010 uses for the rear brake master cylinder, I am aware the caliper has changed to a Yamaha/Kawasaki pad, I have taken the piston/seal part to an aftermarket parts distributor and they were unable to cross reference it with any of their stock. GG here in NZ tell me I have to purchase a complete assembly at $350, furthermore they dont have it in stock..Any information would be appreciated..