Kai Cenat was revved up to meet some of his adoring fans in L.A. yesterday … and we got video of him zipping around with them on their motorbikes.

Watch the clip … the 24-year-old streamer absolutely made these kids’ day. After they waited patiently for him outside of Beverly Glen Deli, Kai rewarded them with not just handshakes and pictures … they had the ultimate hang in the parking lot, as they shared laughs and raced around bikes.

For a second, the fun time almost turned sour when Kai accidentally started up an electric bike that appeared to brush one of the fans … but they laughed it off!