I am currently thinking of upgrading my suspension for to something like a Rock Shox.

This is the bike I have:


I was wondering what should I look for in term of specs so a different fork will fit my bike (i.e stem width and threadless and axle size)

Thank you for all answers

  • 3
    You haven't indicated what sort of riding you do, or whether the current fork is a limit. Realistically if you're not limited by your current fork, what would a better one do for you ?
    – Criggie
    Dec 1, 2017 at 2:13

1 Answer 1


A good place to start is looking up the specifications of your current Suntour fork: http://www.srsuntour-cycling.com/components/fork/XCM-27-5-5617.html

The important points are:

  • Straight 1 1/8" diameter steerer tube
  • Post type brake caliper mount for 160mm rotor
  • 9mm quick-release wheel attachment

You will also need the axle to crown length to be the same or at least close. The Suntour page does not give it but you can measure it easily. I'm not particularly knowledgeable about MTBs but I am guessing that most 120mm travel forks for 27.5" wheels will have about the same length.

  • so does this mean its not tapered
    – vince
    Nov 30, 2017 at 21:46
  • 1
    Correct, I believe it does not have a tapered steerer tube. Nov 30, 2017 at 21:49

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