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  1. #1
    mtbr member
    Reputation: bikerboyj17's Avatar
    Join Date
    Dec 2007

    FSA Afterburner 386 9 speed vs 10 speed

    I need a new double crankset to run with my 10 speed Shimano drivetrain. I was looking at the FSA Afterburner 386 on ebay because they seem pretty cheap and lightweight. There are two versions on ebay, a 9sp 40-27t and a 10sp 39-27t. The 10sp is $30 more. Is it worth it?

    9sp: FSA Afterburner 386 27/40 MTB Compact 175mm MegaExo S9 Crankset - 310-0422 - NEW 400310036131 | eBay

    10sp: FSA Afterburner 386 27/39 MTB Compact 175 MegaExo X-10 Crankset - 310-0437 - NEW | eBay

  2. #2
    Karma Vampire
    Reputation: 29Again's Avatar
    Join Date
    Mar 2005
    I realize you aren't asking if you should get either one but which one. However, I would do two more searches. One on eBay and one on Google. Search for replacement chainrings. They are strangely difficult to find. Not saying they can't be found, just not in a quantity that would keep prices reasonable.

  3. #3
    mtbr member
    Join Date
    Jul 2003
    In answer to your question, since you have the option get the 10 speed crank set for your 10 speed drive train. The reason being is the spacing between chainrings. 10 speed chains are narrower than 9 speed. There isn't a huge difference, but it's there. Thus the spacing between the 10 speed rings is a tad narrower as well. The difference in ring spacing between 9 and 10 speed is enough to make a difference in shifting performance. The 9 speed set will work, but the 10 speed will give you quicker and more positive shifts.

    Good Dirt
    "I do whatever my Rice Cripsies tell me to!"

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