S&M Speedball 20" BMX Tire Color:Black Current / average / maximum

Current / average / maximum heart rate (heart rate strap not included)

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

Clamp for easier gravity bleed

They ensure a smooth feel and protect the longevity internals of the fork from outside elements like dirt and water

30T rings feature 12% ovality

S&M Speedball 20" BMX Tire Color:Black Current / average / maximumAvailable 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.