I ride a Comencal Meta HT AM Origin. Unfortunately I need to buy a new crankset. I’ve been thinking about Shimano SLX FC-M7000 34-24T with a new bottom bracket, BB-MT800.

Do you know if that crankset will work fine with the SRAM x5 parts which are currently on my bike?

  • Welcome to the site! Whether or not something is "good" is mostly a matter of opinion, so I edited that out of your question. The compatibility aspect is definitely a Stack Exchange sort of question. – David Richerby Aug 27 at 15:32

I'm not sure if there would be any problems mixing SRAM and Shimano per se. The SLX crank is a higher end component than the X5, so you would be buying more than you need, and you get problems mixing 9 and 11 speed components.

  • The 11 speed SLX crank uses a narrower chain than 9 speed. The 11 speed chainrings are slightly closer together which may give you shifting problems and chain rub as your front derailleur is designed for 9 speed chainring spacing.

  • By choosing a 24/32 crankset instead of 22/36 you'll be loosing high and low ratios. The smaller chainring gap on the SLX is made up for by a wider spread of sprocket sizes available in 11 speed cassettes.

Upgrading one component several steps - even something major like the crankset - does not make a significant difference to the bike overall, and here you'd be introducing other problems. Better to play it safe and get a SRAM crank. I think all SRAM X-5 through X-9 cranks are now nominally 10 speed but each line includes 9 speed rear derailleurs so they should work fine for you.

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