Even with large bikes, bigger isn't aways better. Even people with good mechanical abilities don't always grasp the intricacies of opimised systems. Putting bigger airbox and larger inlet trumpets on VFR actually lost power!
https://www.vfrdiscussion.com/index....omment-1152382
Yeah, on my 250 pre-gen commuter, I put +2t sprocket in front for more relaxed cruising. Had to use new-gen sprocket cover for chain clearance.