Here's my S5 (56): ROlling on Boyd 58s. The 50/34 (11-25) rings that came with the bike were a joke, so I put on 52/38s (12-25) and that has made a TON of difference. Hoping to get out and get a proper picture soon. Yes, I'm aware of the Rule #48 violation. ISM recommends the rails be horizontal to just barely over, and it works. Scary fast!
