>>1404863Nah, 60cm (a conservative xl) will be enough, like pic related. They're relatively normal. Even though he might prefer a larger 62 (xxl).
58 (an L) is a stretch but also could work for something quite aggressive
56 (medium) would be bad but also not impossible
54 and under he's literally not going to be able to reach the bars with the correct seat height without kneeing himself in the chest
that bike is like a 50. You can comfortably go 1 size down, 2-3 sizes is possible. 5-6 sizes is just silly. Not to mention that it wouldn't even be worth it if it fit him because it's a garbage bike to begin with.