Yeah, WhiteLine don't seem to make a 18mm anymore. 20mm isn't bad I guess, nor 22mm. Just really don't need it for road use. The only reason I wouldn't consider a thicker bar is because the area I live in, all the streets have those hateful speed humps, the rubber ones that are fairly tall and don't cover the whole strip meaning you have to go over them with one wheel. If they were full length speed humps I wouldn't be as concerned.