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Vintage Components - SunTour rear derailleurs

See also: SunTour front derailleurs | SunTour shift levers

On this page: Sprint 9000 short-cage | SunTour AG wide-range

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SunTour Sprint 9000 rear derailleur. used $100.00

Part# RD-83

SunTour part#: RD-SP10-SSB

In 1987 SunTour redesigned the Sprint components. The rear derailleur got a new cage, parallelogram and name. It became the Sprint 9000. This new derailleur was produced from 1987 until 1990.

It will index 6 & 7 speed Accushift Winner Pro freewheels with the correct Sun Tour indexing levers.

SunTour's intention was for the Sprint components to compete against Shimano 600 and to fit between Sun Tour Superbe Pro and Cyclone lines.

Weight: 200 grams.

Suntour sprint 9000 rear derailleur

The pulleys show how little use this derailleur has had.

SunTour Sprint 9000 rear derailleur

And just as nice from the back.

SunTour AG super wide-range rear derailleur. Used, $50.00

Part# RD-85

In the early 1980s SunTour began producing extraordinarily wide-range freewheels, topping out at a 14-38 five-speed monster. That 38-toothed cog probably remains the largest rear cog to have been commercially available.

But how do you move the chain around such a stump-pulling gearset? The answer was the SunTour AG (for "Alpine Gear") rear derailleurs. We believe this model derailleur was produced from the late 1970s into the early 1980s.

Our AG is the summit of Sun Tour's wide-range derailleur production. We admit it's not pretty. But it is supremely effective. Though designed for 5-speed rear cogsets, on some bikes it is said to be capable of managing 8 or 9-speed cassettes.

It is almost entirely steel, except for the rear parallelogram body.

Before posting it for sale we overhauled it.

Suntour AG

If you have a big freewheel, here's your derailleur

Suntour Rear AG

and from the back

Suntour rear AG

Detail shot, showing the wear.