Four piston strokes. Electronic Fuel Injection. Slim headers without an expansion chamber. Sleek, non-clunky, space-age plastics. This is a list of things you won’t see at the 2018 Red Bull Straight Rhythm. And when the event returns to Fairplex in Pomona on October 20, you’ll hear it coming. From, like, miles away. Because there will be only two-strokes racing. Ring-a-ding-ding.

That’s right, the event will step back in time to an era where gear sets were mostly pink, Fresno was smooth and a nac nac was totally rad (kind of still is). Riders will leave their fancy factory four-strokes at home and will run what they brung as they tackle the ½-mile-long straight rhythm track on nothing but two-smoke power.

Despite the bike changes, the concept remains the same. Line up side by side and race head-to-head down a ½ mile of rollers, whoops, doubles, tables and all other kinds of rhythmic insanity. Racing is a best-of-three format, so each rider gets at least two chances to grab victory. This also helps to cut down on all the crying about bad starts at the after party. In its fifth year, the event will continue the format where practice, qualifying and racing will all take place on the same day, with the finals taking place at night under the lights.