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I recently located this SR SunTour service manual, containing schematics of a load of forks. Trouble is, my fork only has "XCR" on a sticker, and production date stamped.

At some forum this is discussed and links are provided to SunTour's XCM, XCR and XCR product lines. Strangely, my XCR does not match visually any of the presented (mine has no V-brake option).

Am I supposed to find a model number stamped somewhere on the fork, as with most other bicycle components, or should I deduce which fork it is from the features e.g. wheel size, brake options, outlook, locking and adjustment mechanisms.

I would be quite surprised if the model is not stamped. How do bicycle mechanics deduce the model - do they know them all from experience?

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  • What about the barcode or numbers available on the forks do they help?? – user10658 Mar 22 '14 at 18:47
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On Suntour's XCR page you'll find some pictures of forks that have both disc and v-brake mounts. However if you press "Show more details" you can read on the bottom of the details column: "Note Disc only type bottom case available". The same model can have two different bottom cases which support disc and v-brake or just disc mounts.

I also have an XCR and the model is nowhere to be found. You have to try and deduce the model.

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  • Observations: 1. (probably) all spring-equipped Suntour forks have v-brake and no-vbrake options 2. the only differences are travel and lockout option. 3. The best low-end fork is the one with long travel and no lockout. It is both the ceepest and the most smooth, as the springs are 2, not only 1. – Vorac Aug 2 '13 at 14:02
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The fork should have a serial number. Not obvious and a little small and faint, something like tb0111xxxx. Mine was located on the lower assembly.

Go to https://www.srsuntour-cycling.com/service/ enter the number and it should come back with model type and year of manufacture. From that you should be able to find the exploded view pdf.

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A easier way may be to look up your bike year and model on bikepedia, the site is both detailed and accurate.

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