Rockrider 520 for teenager
I'm looking at the Rockrider 520 for my son. Sizing wise the M is technically too big for him he's 160 cm tall and the size M is recommended from 165 cm. I'm buying it with the ideal of him growing into it! Any thoughts on the sizing or even bike choice etc? I will probably get a 40mm stem to size it down a bit.
Caveat - I buy and ride cheap, however, I reserve the right to advise on expensive kit that I have never actually used and possibly never will