NIB/NOS Suntour Mighty Rear Thumb Shifter: 5sp Ratchet - Stingray Fastback + 1982 Stumpjumper - Excelsior Klunker - Breezer - Lawwill Pro Cruiser...

This rare shifter from the 1970's into the early 1980's was first prominent on muscle bikes like the Schwinn Stingray Fastback and then klunker mountain bikes based off the pre-war Schwinn Excelsior cantilever frame.  When the MTB revolution came,...