One of my mates is just under 6' and rides a Large.. He is of average dimensions and enjoys the flat-back position that a larger frame gives.. He tried the Medium and it simply didn't feel long enough for him. I am 6'4" and ride an XL Superlight... It fits me perfectly.
One of my mates is around 5'11" and rides a Large SL with a 120mm stem.. He is a bit of a flat-back ex roadie type so enjoys the stretched out position.. I am 6'4" and ride an XL with a 130mm stem.. The Superlight was built for XC so you need plenty of room IMHO.
Where can I source a new sealed lead-acid battery to replace the knackered one on my Smartlights? It's a 6v 4.5A unit.. Can I directly replace it with a 8.0A unit? Thanks