This is a brand new 47 tooth rear sprocket from sprocket specialists. I'm not sure what fits. i got it from a guy with a lot of Harleys, so im assuming it fits some kind of Harley Davidson or choppers. It really light it weighs 2.5 pounds. I'm not sure if it's aluminum or something really light. says Titan is tough on it. It has part number 276 on it i put some mesurements in photos.

feel free to massage me with any questions