The Honda XR650 R Mikuni TM40-50 40mm Carburetor Kit with Body Choke NCS238 is a high-quality motorcycle part designed for optimal air intake and fuel delivery. This carburetor, featuring a mechanical choke type, is a genuine Mikuni product with its own unique manufacturer part number NCS238B. Designed specifically for Honda XR650 R models, this carburetor kit ensures reliable performance and smooth operation on the road. Upgrade your motorcycle with this essential part to enhance its fuel system and improve overall function. Originally purchased through XRs Only, it was used no more than an hour of total time, but has been sitting in my garage WITHOUT fuel in it for four years. Very clean.