sun bicycles unicycle sun 24in extreme 2014 grey sun bicycles a sharp new flat-top frame design with top bar foot placement traction and reinforcing gussets guarantees stiffness and control in any condition or maneuver. we've also added a bomb-proof isis spindle hub and alloy crank arms to ensure maximum stiffness and impact resistance. large platform pedals and a custom saddle with integrated grab rails and scuff guards help you maintain your composure no matter how extreme you get. available in a 20" and 24" whiteeel for different rider heights and terrain demands. gusseted flat top high tensile steel frame, lightweight anodized alloy whiteeels, rugged isis spindle sealed bearing hub, alloy isis crank arms, custom unicycle saddle with heavy duty scuff guards, secure double-bolt seat post clamp, fast-rolling multi conditions tire, 20" or 24" whiteeel size. gusseted flat top high tensile steel frame, lightweight anodized alloy whiteeels, rugged isis spindle sealed bearing hub, alloy isis crank arms, custom unicycle saddle with heavy duty scuff guards, secure double-bolt seat post clamp, fast-rolling multi conditions tire. 20" or 24" whiteeel size