RR Beta RR 350-500 Red Oil Filler Cap

It’s the details that separate a race bike from a trail bike. Replace your cheap, fragile stock plastic filler plug with the Beta RR Billet Aluminum Oil Cap.

CNC-machined from high-grade aluminum and anodized in signature Beta Red, this cap isn’t just about looking good—it’s about durability. Unlike plastic caps that can crack, strip, or seize from heat cycles, this billet cap is built to last the life of the machine.