April 3, 20206 yr I have found this to fit perfectly once the locating tabs around the carb mating face are gently ground away with a dremel or similar, my pic shows after grinding/shaving. It suits a 40 mm spigot diameter which is what one wants for the 28mm Dellorto fitted to the Jumbo which has the factory fitted machined sleeve to take it from 36mm to 40mm OD, the distance from barrel to carb is spot on and 75mm between fixings. https://www.jetsrus.com/individual_parts/002_052_su.html Edited April 3, 20206 yr by fourex add 3rd pic
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