Build quality is very damn durable. That along with the brakes are why I gave it two stars. Usually I'd have presented it one. I’d give it zero if I could. I purchased S2 Professional and S2 for me and my partner. We have been so delighted. Easy ride, https://www.electricscooter.ltd/big-e-scooter-off-road-electric-scooter-double-motors-double-lights-20000w/