This rear mastercylinder unit is brand new never opened in Honda's original parts box. Unit consists of new mastercylinder, all electrical connections and complete new reservoir and hoses. Sells for $343 plus tax at Honda dealerships. I bought it new and was not allowed to return it. Had other problems. I was told it fits all Goldwing 1500 series. Honda parts no. is 43500-MT8-006. Will sell for $250 + shipping.