And the left lever only applys braking to the left rotor and the rear rotor. Dual rotors on the front wheel should not pull one way or the other, but it is usually best to engage both - use all the brakes you have, after all. Never had a problem with the scooter pulling to the right, even if braking hard with only the right lever. Besides we are talking a fraction of a second here. In an emergency situation, you should be squeezing both levers with steadily increasing pressure until stopped. If the bike veers to the right or left, then something is not working right. By the way, the only concerns with linked brakes are that 1) the rear wheel could lose traction as weight shifts to the front of the bike when braking and 2) with linked brakes you can't use a little rear brake to help you maneuver in tight spaces because the front brake engages and makes steering more difficult.