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I need to know which drop out hanger I need for this Specialized Rockhopper. Part of the frame is chipped at the dropout but it will still bolt on. I just don't know which hanger I need.

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    A picture of the hanger area could help.
    – ojs
    Commented Jul 15, 2018 at 21:42
  • The answers on this question should enable you to find what you're looking for bicycles.stackexchange.com/questions/10286/…
    – Ross
    Commented Jul 16, 2018 at 18:04
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    If you can give us more details wheel size, number of speeds, approx. age. There are data bases that can help but you need at least a few details. If you are trying to save a few bucks by circumventing your local bike shop in this case it won't help much. There are few suppliers and on line prices are close to what the bike shop charges, generally around $30 US.
    – mikes
    Commented Jul 16, 2018 at 18:05
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    Personal opinion - I would not be confident that the rear wheel would be properly held in to the damaged dropout. Maybe I'd ride this on good road surfaces, I would not ride it on rough trails.
    – Argenti Apparatus
    Commented Jul 17, 2018 at 18:02
  • OJS_ There is a close up of the drive side hangar area.
    – puzylo
    Commented Jul 17, 2018 at 19:44

2 Answers 2

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I googled "specialized rockhopper derailleur hanger" and one of the links was

https://media.specialized.com/support/0000004464/0000004464_CG0421_hanger_fit_chart_rev2013.pdf

The Rockhopper table is on page 4 of 9 and looks like this

ROCKHOPPER
2011 2011 Rockhopper M4SL 26"/29er 9895-4021
2010 2010 Rockhopper SL            9895-4021
2011 2013 Rockhopper M4 26"        9895-4021
2006 2010 Rockhopper HT            9895-4021
2011 2011 Rockhopper Comp 29” HT LEFT  9898-4240    RIGHT 9898-4245
2010 2010 Rockhopper SL 29”        9895-4021
2008 2010 Rockhopper 29” HT LEFT   9898-4240
2008 2010 Rockhopper 29” HT RIGHT  9898-4245
2011 2013 Myka HT 29”              9895-4021
2008 2013 Myka HT 26"              9895-4021
2005 (Late) Rockhopper HT          9895-4021
2004 2005 Rockhopper HT            9894-4206
2003 2003 Rockhopper HT            989-4271
1996 2002 Rockhopper HT            989-4261
2003 2003 Rockhopper FSRxc         989-4271

So, with some exceptions, half of them use 9895-4021 which looks like this:

http://www.mcconveycycles.com/images/specialized_gear_hanger_g_9895-4021.jpg

And is mostly in black with the odd silver one around.

The earlier models all use different hangers, so you'll need to remember when you got it, and work out its age from there.

Interestingly, wheel size seems to be unrelated.

EDIT OP says its a "specialized hanger 12" which seems to look like this:

https://www.marleen.co.nz/slir/w-h-q90/4121/

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    That definitely looks promising, with the latest photo included in the question. OP has something to compare the broken hanger with, to make their decision. I'm wondering if they're the original owner though, having misspelt [Spunge] in the duplicate question ;)
    – Swifty
    Commented Jul 19, 2018 at 7:47
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    wrong hanger there.... nearly though....its a specialised hanger 12 thats needed and i now have one.....but i now need fixing bolts...
    – puzylo
    Commented Jul 24, 2018 at 14:47
  • @puzylo Great work - when you have it all working and together, come back and add your own answer, list all the part numbers etc you have, and any problems resolved. You're totally encouraged to do this, and mark your own answer as "accepted" because its what worked for you.
    – Criggie ♦
    Commented Jul 24, 2018 at 23:31
  • And potentially a second fixing bolt hole which hasn’t snapped off the frame dropou...🙁
    – Swifty
    Commented Jul 25, 2018 at 6:20
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If you take a pic of your bike's hanger then go take a look at this site: https://derailleurhanger.com/

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  • Ive sorted this in as far as the answer to this question is that the hager needed is indeed a SPECIALISED HANGER 12. .....however I now need the bolts and they didnt come with the hanger and I cant find anywhere selling them....any advice? size of fixing bolts would be handy right now....nearly there :)
    – puzylo
    Commented Jul 24, 2018 at 14:43
  • What’s that blue thing in the last photo, a little bolt head? It’s snapped off but might help with sizing. Unfortunately you’re going to need two, the photo looks like one has snapped off with the frame damage which would be really bad luck, but not necessarily game over
    – Swifty
    Commented Jul 25, 2018 at 6:22

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