With a clever cable route, a relatively low price, exceedingly light weight and with a great shift, the SunTour Cyclone was a miracle. To this day the Shimano Dura-Ace is heavier than this Cyclone - proof of the simple purity of the single-sprung pivot slant parallelogram design.
The second style of SunTour Cyclone had a slightly redesigned rear knuckle and a captive short hanger bolt (with a distinctive serrated edge). It gained 4g in weight from these changes.
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