GT Siren 12"

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  • Regular price $244.99
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With 12” wheels, a lightweight alloy design, LegitFit handling on a low-slung frame, this GT is ready for pedal-power. It’s super-easy to ride with relaxed gearing, and the training wheels are removable for when your young ripper is ready for the big day.
  • Improved Geometry bikes with the LegitFit system feature geometry adjustments to improve ergonomics for youth statures. The result: Increased stability, comfort and confidence for a wider range of riders.
  • Easier Pedaling bikes with the LegitFit system have their pedal positions moved slightly forward. The result: Makes it easier to pedal. 
  • Better Positioning bikes with the LegitFit system have narrower crank and pedal positions that match the width of a child’s hips. The result: A stronger, more natural pedal stroke.


Model Code G52501F
Frame 12" GT LegitFit Design, Alloy
Fork GT Hi-Ten Steel, 1" Threaded Steerer
Chain KMC HV410 1/2" x 1/8"
Crank Forged One-Piece Type, 89mm, Steel, 24T
Bottom Bracket Steel, Ball Type
Pedals Jr. BMX Design, Resin
Rims Alloy, 16h
Tires GT 12 x 2.25"
Front Hub Steel, Nutted Axle
Rear Hub Steel, Nutted Axle, Coaster Brake
Spokes Stainless Steel, 14g
Brakes Coaster Rear
Front Brake Coaster Rear
Rear Brake Coaster Rear
Handlebar Steel Riser Bar, 130mm Rise, 480mm Width
Stem 2-Bolt Alloy Top, Steel Quill
Grips 95mm Closed End
Headset 1" Threaded, Steel
Saddle GT 1-piece
Spec Extras Training Wheels, Fender, Bar, Stem Pad