💡 If you are trying to register a bike for a warranty, the serial number is usually located on the underside of the frame where the pedal cranks meet.
A signature GT frame feature that increases stiffness and reduces vibration.
A unique serial identifier. In bicycle manufacturing, "R" often denotes the factory, while the numbers indicate the production year (e.g., 08 for 2008 or the 8th month) and unit sequence.
