The GT Siren 16 F Pitch Green is a lightweight youth bike with a 16" aluminum LegitFit frame, all-terrain 16" tires, and a simple single-speed coaster-brake setup, designed for easy handling and stability for young riders learning to ride or cruising around the neighborhood.

• 16" GT LegitFit aluminum frame with youth-adjusted geometry for stability, easier pedaling, and better positioning

• GT Hi-Ten steel fork with 1" threaded steerer

• single-speed drivetrain with 28T chainring and KMC HV410 chain for durability

• coaster brake rear hub for intuitive stopping

• 16" alloy 20h rims with all-terrain 16×1.95" tires for smooth rolling on varied surfaces

• forged one-piece 89mm steel crankset matched to child hip width

• sealed steel ball bearings in hubs and bottom bracket for low maintenance

• GT LegitFit system adjustments: forward pedal position and narrower crank width for natural pedal stroke

• numberplate for fun “race” styling

• steel riser handlebars with child-appropriate width and closed-end grips

• removable slide-on training wheels compatible (sold separately)

• weight typically around 8–9 kg depending on components