Your Starting Point for a Fully Customized G Line This is the factory Brompton G Line—the factory foundation for designing your own custom Brompton through our Custom Shop. The G Line brings Brompton’s newest all-terrain platform with a robust frame, confident handling, and an 8-speed internal hub designed for varied surfaces and daily riding. In the Custom Shop, this base model becomes your blank canvas. You can change the drivetrain, cockpit, lighting, wheels, suspension, colors, finishing hardware, and more. Keep it practical, make it bold, or build something completely one-of-a-kind. Every component is installed and tuned by our Brompton specialists. Use this Base Model to explore the full range of customization options and create the G Line that fits your riding style, terrain, and aesthetic. Start with the essentials. Build the Brompton that’s uniquely yours.
