Lowering does affect a ROLL race. The newer 1000's are geared to 100+mph in 1st. Crack the throttle on 1 at 40mph at stock height & then do it while lowered. Also, aerodynamics kick in about 100mph and a lowered bike will gain an advantage against a stock height bike. I've seen a race between a stock height 12R vs a lowered K1 from 60mph & the 12R almost flipped over as soon as he cracked the throttle.