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Siren 12

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.

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Shipping Policy

Free shipping on all orders for bikes, apparel, parts & accessories for any order in the United States. 

*Please allow for 5-7 days of transit time as all orders are shipped via ground shipping.

*If an order is placed on Friday, please allow 2-3 days for processing. 

Please reach out to sales@gtbicycles.com if you have any questions.

Return Policy

Returns are accepted within 30 days of delivery.

Details

  • The bike or part must be in its original packaging to receive a 100% refund.
  •  If product is unused but protective packaging has been removed or has major damage, we will refund 75% of the order.
  • We do not accept returns on apparel.
  • Please allow for 7-10 days to process the return and issue refund.

*Protective packaging includes: foam, cardboard, zip ties, plastic axle covers, warning decals and reflectors.

Please reach out to sales@gtbicycles.com to start a return.

This bike will come partially assembled. Please see these instructions and build video on how to assemble the bike.

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Frame

frame 12" GT LegitFit Design, Alloy
sizes available One Size
fork GT Hi-Ten Steel, 1" Threaded Steerer
wheel size 12"

Wheels

rims Alloy, 16h
front hub Steel, Nutted Axle
rear hub Steel, Nutted Axle, Coaster Brake
front tire GT 12 x 2.25"
rear tire GT 12 x 2.25"

Drivetrain

chain KMC HV410 1/2" x 1/8"
crank Forged One-Piece Type, 89mm, 24T
bottom bracket Steel, Ball Type
pedals Jr. BMX Design, Resin

Cockpit

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

Brakes

brakes Coaster Rear
Please note that, based on component availability and other factors, specifications are subject to change without notice.

Fit Guide

12" Wheels
2'10" - 3'4"
16" Wheels
3'4" - 4'0"
20" Wheels
4'0" - 4'5"
24" wheels
4'3" - 4'8"
26" wheels
4'3" - 4'8"

GT Tech Book

GT Owner's Manual