I rode a Zuma125 for 3600 miles before I got the B400 with ABS. Got real used to CVT with that and I'm glad. One day I was stopped at a light next to a Harley rider, the light is a block from a bridge and on the far side of the bridge is another light, this bridge is not flat, it's arched over the river and about 200 feet long. When our light changed, I took off on the Zuma, the Harley was slow off the line and I knew by the way he slipped the clutch he wasn't a frequent rider. He zoomed by me and 1/2 way over the bridge that far light changed, it always does. Like a noob, he locked up the rear brake, smoking his tire, then started to wobble, never touched his front brake. He skidded that for a good 75-100 ft and i know it was flat spotted. The rear of that bike was switching sides by at least 4'. I thought he was going down, but somehow he kept it up, but I think he needed an underwear change. Anyway, the point is, if you need to panic stop, grab both brakes and modulate the rear. I've had to do,a couple of hard stops on this scooter and it does a good job of hauling down its 500 lbs and my 200. Most of the braking needs to be the front with help from the rear, not the other way around.