The Suntour X-1-1 is a front derailleur identified by its 28.6 mm clamp diameter. That single measurement dictates which seat tube it can grip. For a vintage build, this is the first fact that matters.
This is a used component. The images in this listing form an integral part of the description and provide the definitive record of its cosmetic state.
A 28.6 mm clamp front derailleur belongs on steel or alloy frames with that exact seat-tube profile. It sits ahead of the chainset to move the chain between rings. The Suntour X-1-1 belongs to an era of mechanical shifting where the cage shape and arm geometry did the work without indexing.
For collectors seeking period hardware, this part can sit alongside other classic front derailleurs. See the Shimano 600 Arabesque front derailleur or the Shimano DURA ACE vintage front derailleur for alternative period units.
The clamp diameter is 28.6 mm. This measurement is taken from the product name and is the key compatibility figure for fitting the derailleur to a seat tube.
This is a used component. The listing photos are part of the description and show the exact cosmetic state. No major defects are specified in the item data.
The Suntour X-1-1 is a period front derailleur. Its geometry predates modern indexed front shifting and is generally suited to friction or period-correct systems.
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Brand: SIMPLEX
Brand: SHIMANO
Brand: Campagnolo
Brand: SIMPLEX
Brand: SHIMANO
Brand: SIMPLEX
Brand: Campagnolo
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