GT Siren 20"

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  • Regular price $304.99
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Even our kids’ bikes are built right from the ground up – perfectly proportioned lightweight alloy frame, easy-riding low-slung design, and handling that makes every ride a breeze. Durable 1pc cranks, all-terrain tyres, 2pc bars and even a numberplate FTW.

  • 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.


Sizes One Size
Model Code G52301F
Frame 20" GT LegitFit Design, Alloy
Fork GT Hi-Ten Steel, 1" Threaded Steerer
Chain KMC S1, 1/2x1/8"
Crank Forged One-Piece Type, 127mm, 32T
Bottom Bracket Steel, Ball Type
Pedals Jr. BMX Design, Resin
Cog Set Null
Rims Alloy, 28h
Tires GT 20 x 1.95"
Front Hub Steel, nutted axle
Rear Hub Steel, Nutted Axle, Coaster Brake
Spokes Stainless Steel, 14g
Brakes Coaster Rear, Rear Alloy VBrake
Front Brake Coaster Rear, Rear Alloy VBrake
Rear Brake Coaster Rear, Rear Alloy VBrake
Brake Levers Alloy V-type
Handlebar Steel Riser Bar, 176mm Rise, 580mm Width
Stem 2-Bolt Alloy Top, Steel Quill
Grips 120mm Closed End
Headset 1" Threaded, Steel
Saddle GT 1-piece
Spec Extras Fender, Bar, Stem Pad