These full radius steel bungs are 1" long x 3/4" diameter and are 5/16"-18 thread

Grips are available in 1 inch (the size needed for all Harley-Davidsons and other 'cruiser' style motorcycles) as well as 7/8 inch (common on many vintage British

Stock application there would have been one of these on the right side (as if seated on bike) of the speedometer

Whether you're adjusting for new pipes

if you have dual carbs you can always use a cable splitter for smooth

#8202-18 Rear Fender Mounting Kit 1936-1957 Harley-Davidson Big Twins - CAD Plated Subcategory_Motorcycle Handlebars These full radius steel bungsRear Fender Mounting Kit CAD Plated Fits 1936 57 Harley Davidson Big Twins. Made in Ohio, USA.