Suntour Cyclone 3rd Gen (after the original, and the M-II), came out in 1983.  A beautiful set and in excellent condition!   Previously on a show bike, they both have little evidence of prior use, with some minor chain rub lines. would look great on any vintage restoration! 

Message me if you have any questions!

Rear Derailleur:RD-6000

• 210 grams
• Max Chain Wrap: 28t
• Max Cog Size: 26

Front Derailleur:FD-3300

• 100.5 grams
• 26.8mm “Clamp Style” (these also were available as a Braze-on or in a "band style")
• intended for a Double.