with the flange being 7/8" outside diameter and 1/8" thick

the mounting points are the same

They each have a cable adjuster

they are easy to weld and are a great bung for blind threaded items like fender mounts or struts or anything else you can think of

unit Triumph 500 and 650 c

Sparto Polished Aluminum Tail Light - 12v NoReturns with the flange being 7/8"You can't beat the classic look of a Sparto tail light. Also known as a limp dick tail light. These reproduction tail lights are polished aluminum, which give a much softer, vintage look to them than chrome. They are 12v and include a dual filament bulb (running and brake light), rubber base and necessary mounting hardware.