FSA Gossamer MegaExo Compact Crankset

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durability
shifting ease
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Overall Rating Not Rated
Information
Price: $180
Weight: 870 grams

FSA Gossamer MegaExo Compact CranksetThe FSA Gossamer Compact Crankset is a pretty standard budget oriented, aluminum compact crankset designed to work with the FSA MegaExo bottom bracket. The crank arms are not hollow or carbon, but cold forged aluminum. This makes them relatively strong and stiff, but a little heavier with more flex than higher end offerings. The 50/34 chainring group is 7075 aluminum and has been custom machined to ensure clean and accurate shifting. The FSA Gossmer is designed to work with Shimano 9 and 10 speed drivetrains. If you're going from a triple to a compact double, check with the mechanic at your local bike shop because you may need a double specific front derailleur.

The MegaExo bottom bracket has gotten mixed reviews from riders. Some complain that it lacks durability and tends to wear out after 1000 miles, others have complained about the cranks arms coming loose, causing the bb to make clicking sounds. It's probably a good idea to have this compact crankset professionally installed and inspected on a regular basis.


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The FSA Gossamer compact crankset is a good choice if you want to experiment with a compact double and don't want to spend too much money. If you look around you can probably find one of these on Ebay for around $100. Worse come to worse, you'll probably get one or two seasons out of it before you need to replace it with something lighter and better quality. The crankset has a Q-Factor of 147mm and is offered in 170, 172.5, or 175mm crank-arm lengths.

3 Reviews for “FSA Gossamer MegaExo Compact Crankset”

  1. RileyC says:

    This seems to be a pretty good crankset for the price, got mine on Ebay for $70. I guess you can’t go wrong for that price. If I get a couple of years out of it I’ll be happy. I do agree the the MegaExo BB appears to be cheaply made. I haven’t had any catastrophic failures yet, but it’s starting to feel a little bit loose and I noticed some creaking last winter. I feel good enough about my wrenching to be confident in the install, but If you’re not, It would be wise to take the parts to your LBS and have them do it. FSA products have been good to me in the past so I hope this crankset doesn’t let me down.

    stiffness
    durability
    shifting ease
    look/style
  2. John P says:

    I’ve been using one of these since they first came out ['05?] and have mixed feelings about it. It’s stiff enough for 175 lbs and is still going strong after 9000 miles, but you must install this precisely by the book. Too much preload on the BB will torch it and the pinchbolts must be at exactly the specified torque. Shifting can be iffy going down and it will sometimes drop the chain if you are going down when in a small cog but that’s a common compact thing, as is small/small ramp pin contact. The less gently you treat it the better it shifts! Seems to prefer Sram chain, oddly. The chainrings are good metal. I was thinking of upgrading it but unless you go to Ultegra it is probably as good as the other options.

    stiffness
    durability
    shifting ease
    look/style
  3. Jeff W says:

    Perfectly good crankset for the price. Don’t understand the low rating. Cancellara uses this model. Seems to me if they wear out so easily he would not be using one. Sounds like user mechanical error in the cases where they seem to have problems.

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