I just ordered a new MTB through the mail (Santa Cruz Bronson). In the spare parts and accessories bag was this weird sheet of heavy vinyl clear stickers. I can only assume they are for frame protection or something? But I can't really figure out where they fit, and the fact that the two "hook" shaped ones aren't mirror images seems odd to me. I doubt I need then for anything... this is more just idle curiosity at this point, thanks!

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  • 2
    I think the round ones are to stop your cables rubbing against the frame and normally go near the cable lugs.
    – Kim Ryan
    Mar 16, 2016 at 5:14
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    I'm guessing the two hook ones are for the right chainstay, for chain slap protection. The round ones will be to protect the frame from rubbing of a cable outer, and the long oval one probably goes on the top tube, between the exposed inners and the frame, again to protect the paint. If you want to use these, put them on now, before the frame gets even a little scratched. Also they'll stick better when new, and when the frame is not oily. Not an answer because I'm guessing.
    – Criggie
    Mar 16, 2016 at 6:42
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    Criggie is correct; it's best to fit them now if at all, since the frame is clean and free from oil. If you fit them later, you'll have to buff the frame thoroughly before applying, ideally with isopropanol (rubbing alcohol) to remove grease/oil. Even finger prints can prevent these from sticking properly. I also find that heating the frame and/or patch with a hairdryer helps them stick. Mar 16, 2016 at 10:41

1 Answer 1


These are protective stickers for the chainstay, bottom end and some spots on your frame where the brake and speed cables cause frictions with the frame, scratching the colour.

  • 6
    And if you intend to use them (which isn't a bad idea), apply them now, while the bike is clean (and unscratched). Mar 16, 2016 at 12:24
  • 4
    (But note that it may be a generic sheet -- for several different bikes. Some of the pieces may not fit anywhere sensible.) Mar 16, 2016 at 12:25

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