Disc Brake upgrade to Stumpjumper

snowbiker1
snowbiker1 Posts: 7
edited January 2017 in MTB buying advice
Hi All

New to the forum, so please be kind!

I have a Specialised Stumpjumper that I have had for many years, from around 2007. It has V brakes fitted and Fix Forks but also has the lugs for disc brakes on the rear frame hanger and also the front forks.

I'm looking to upgrade the wheels and brakes to discs, but have no idea what the fittings are for the disc brake callipers are they IS??

Any help on the size for the mounts and the best to go for would be great

Thanks

Comments

  • RichardSmart
    RichardSmart Posts: 387
    My suggestion would be to take your bike along to your nearest bike shop and ask them there - they can tell you how much it will cost and how big a job it is - even if you then decide to purchase online and fit them yourself...
  • RichardSmart
    RichardSmart Posts: 387
    ...and welcome to the forum!
  • cooldad
    cooldad Posts: 32,599
    9ailL.jpg
    I don't do smileys.

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  • cooldad
    cooldad Posts: 32,599
    Most new brakes are post mount, so you'll need IS to post mount adapters in whatever size you want. 160mm rear and either 160 or 180mm front are most common for that type of bike. Front and rear sizes are different.

    http://www.chainreactioncycles.com/shim ... -prod13743
    http://www.chainreactioncycles.com/shim ... -prod13749
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • snowbiker1
    snowbiker1 Posts: 7
    That's perfect! Thanks all
  • snowbiker1
    snowbiker1 Posts: 7
    I was weighing up the cost of changing brakes or a new bike, but the old stumpy frame is too good not to upgrade and spend a little on it. Looked at hope hubs, had them in the past on a Turner Afterburner but may need to go more towards Shimano XT budget. Any reckmmendations on hubs and rims for XC riding?
  • The Rookie
    The Rookie Posts: 27,812
    You can get a set of clarks M2 brakes with discs and adaptors and bolts for £35 off eBay, just fitted some on my commuter, very impressed with the performance so far.

    Wheel wise have a look at the options on the Superstar components website, they have something at good value to suite all budgets, on-one is also worth checking for their crazy end of line offers.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • swod1
    swod1 Posts: 1,639
    how much do you want to spend as you could get some deore m615 brakes for not much money on places like chain reaction cycles etc and then get the is to post mount adapters and discs.

    As your bike is 26" check out ebay I got a set of hope pro 2 evo hubs on mavic rims for not a lot of money, just need to have a look about.
  • Hinaultscrapcousin
    Hinaultscrapcousin Posts: 647
    What axle size does the front fork use? I'm pretty sure that the '07 Enduro had a 25mm axle. It's unlikely that the stumpjumper does but you need to know as I think it's pretty much an obsolete standard now. A mate has two sets of the forks and had to get hold of the hub as well as he couldn't find anything else that would fit.
  • snowbiker1
    snowbiker1 Posts: 7
    Thanks
    The forks are QR, so doubtful 25mm
    But going to check in case
  • Hinaultscrapcousin
    Hinaultscrapcousin Posts: 647
    snowbiker1 wrote:
    Thanks
    The forks are QR, so doubtful 25mm
    But going to check in case

    If it's a QR then there's no way it's 25mm, that would need a thru-axle.
  • snowbiker1
    snowbiker1 Posts: 7
    Yep QR so not thru axle.
  • snowbiker1
    snowbiker1 Posts: 7
    Thanks for all the help, glad I joined now!

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