S&M Speedball 20" BMX Tire Color:Black 30T rings feature 12% ovality

30T rings feature 12% ovality

The Scamp II is Giro's smallest helmet designed for young (or future) riders but it still goes big with features and style

the Martello Trail drops in with aggression but spins up easily on climbs and rollers on days when you’re earning your laps

and extra alternative fit nose pads

Clamp for easier gravity bleed

S&M Speedball 20" BMX Tire Color:Black 30T rings feature 12% ovalityAvailable in a wire beaded casing with extra pinch flat protection for street riders that prefer to run lower pressure. The Speedball features a multi edged S&M shoulder tread design that looks cool and holds the ground. The 20" Speedball has a smooth unbroken center strip for less rolling resistance.