Whoops, I mixed up the definition of a 1st sub-generation suntour cyclone derailleur.
1st sub-generation : says "Cyclone GT" on the pulley cage. Has a thin (1/2") mounting bolt aluminum hanger, flat aluminum plate from upper parallelogram to mounting bolt.
2nd sub-generation : says "GT" on the pulley cage. Has a much thicker 3/4" aluminum mounting bolt hanger, the aluminum swoops outwards from upper parallelogram to add weight and make cyclone less competitive with suntour superbe? Including the longer bolt, its probably 10-20gm heavier.
- Don Gillies
San Diego, CA