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Strange rubber dot on Planet X RT-57 frame

Hi, just got my Planet X RT-57, and found this strange rubber dot placed right behind the chain catcher.

IMAGE(http://imgur.com/hPG2ou2)

What's it for? I don't see the purpose to it.

If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.

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8 comments

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PhillBrown | 9 years ago
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Careful... It looks like you have grommets!

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longtimejones | 9 years ago
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Thanks for the replies, I'll leave as it is  1 There are two ports on the left chainstay and a smaller "port" in the rear end on each chainstay also.

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Yorkshie Whippet | 9 years ago
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It's in exactly the same place as the Di2 port on my Ridley Fenix.

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therevokid | 9 years ago
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that does look remarkably like a di2/eps port cover doesn't it .... are there any
elsewhere ? Like around the headtube or rear mech ??

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mike the bike | 9 years ago
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Whatever you do, don't pull it out or the compressed air that keeps the carbon inflated will escape.

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longtimejones | 9 years ago
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I have attached an image of this rubber dot.

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therevokid | 9 years ago
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can't see the image ...  2 Pretty sure RT57's aren't electronic compatible ...

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Yorkshie Whippet | 9 years ago
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Is it covering a hole for Di2 wiring?

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