So I've never changed a chainring before. But the first step is finding the right one.
I have a Cube Hyde SL 2012 . It describes the crankset as
Shimano Deore XT FC-M785 Hollowtech II 42x26T., 175mm, integrated BB
By which I assume the 42 refers to the number of teeth on the outer ring - which is the one I need to change.
The closest thing I can find is this (M780):
But a) it suggests it's a triple chainring, and b) in the Q&A on that site someone has asked
"I'd like to swap out the 40t large ring on my Shimano XT M785 10 Speed Double Chainset with this 42t ring, would that work?"
With the answer
The chainrings for the M785 crankset have a specific design and unfortunately are not listed as having a compatible interchangeable option.
So.. err.. what now?