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  1. #1
    mtbr member
    Join Date
    Mar 2008

    Crankset upgrade for a masher

    Long story short, on my old hardtail I killed several ISIS bottom brackets and eventually thrashed the splines on my crank. Upgraded to a SLX Hollowtech crankset with external bearings and all was good again.

    Now, I have a GF Rumblefish and after less than about 400mi, my crank is creaking to the point I can feel it through my feet. Replaced the press-in bottom bracket with an aftermarket Enduro version but creaks are still there (have new pedals, too), so I have isolated the noise to the splined interface on the crankset (non-drive side). Apparently my 215lb masher riding style is a bit hard on cranksets...any recommendations for a crankset upgrade from the stock Shimano M542? I'll probably try the SLX simply because I had good results on the hardtail. Other suggestions?

    Thanks in advance.

  2. #2
    turtles make me hot
    Reputation: NYrr496's Avatar
    Join Date
    Sep 2008
    I weigh 255 pounds and went through a couple of Shimano bottom brackets. I switched to a Chris King BB and I run 180 mm Shimano XT crankarms. No problems with durability any more.
    I like turtles

  3. #3
    err, 27.5+
    Reputation: AL29er's Avatar
    Join Date
    Jan 2004
    Shimano LX, SLX, or XT with external bearing BB. I have been riding them since around 2005 with no issue whatsoever. I usually need to swap bearings sometime about 1 season in. At that point I upgrade to Enduro brand replacements at about $15 and they are good for 1-2 more seasons. If you are a masher odds are you will go through chainrings faster than BB bearings though.
    Quote Originally Posted by saturnine
    that's the stupidest idea this side of pinkbike.

  4. #4
    Reputation: CaveGiant's Avatar
    Join Date
    Aug 2007
    +1 on SLX.

    If you go for the double and bash you will get good quality steel chainrings.

    I used to ride boutique strong Al chainrings, steel is SO far ahead for a powerful rider I will never go back. 40 every few months for a Al ring, 8 for a steel ring that is good for 18month so far.
    Why would I care about 150g of bike weight, I just ate 400g of cookies while reading this?

  5. #5
    mtbr member
    Join Date
    Jan 2008
    try DH stuff. I have race face diablous cranks and BB. they will clean out your wallet.

  6. #6
    Fat guy on a bike
    Reputation: Mordy's Avatar
    Join Date
    May 2006
    Raceface Evolve DH! weighs as much as an anchor but sold as a rock. Running mine on a rigid niner.

  7. #7
    Join Date
    Mar 2010
    I have Shimano Saint cranks and BB on my cross bike, worth every bit of coin!

  8. #8
    R.I.P. DogFriend
    Reputation: jeffj's Avatar
    Join Date
    Jan 2004
    If your ISIS cranks are still good, you could try to source one the SKF BXC-600 ISIS bottom brackets. They are supposed to be pretty bombproof and the best ISIS bottom brackets made.

    Evolve DH cranks have been bomber for both my son and I on our Giant Reigns, but as Mordy says, they do incur a weight penalty.

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