2018 Trek Marlin 5 1x Conversion

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2018 Trek Marlin 5 1x Conversion
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Posted: Nov 22, 2019 at 8:54 Quote
I am riding a 2018 Trek Marlin 5 with the stock 3x7 drivetrain. I want to upgrade to a 1x11 (likely SLX groupset with XT shifters). I am having trouble figuring out everything that I need though.

I believe I will need a new BB (BB MtT800), a new rear hub but am having a hard time figuring that out for sure.

So two questions: Can anyone tell me if I will in fact need a new BB and rear hub? If so, would it be better to just buy a new rear wheel or is the hub easy to replace? I am pretty mechanically capable and have access to bike tools, but have never worked on a hub.

I know that some may think it's stupid to do a lot of upgrading on a bike like this, but I am just planning right now so not looking for opinions on that topic, thanks!

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