Brompton’s G Line Launch: A Game-Changer for Off-Road Folding Bikes
Brompton’s G Line folding bike boasts 20” wheels, disc brakes, and off-road capability. Discover why it’s a top pick for city commutes and gravel rides alike.
Brompton has long been synonymous with folding bike innovation, but last year’s launch of the G Line marked a significant leap forward. Sporting 20” wheels, a redesigned geometry, and disc brakes, this gravel-focused folder was so well-received that it topped our 2024 bike review charts—an accolade backed by its performance and utility. Now, with the G Line arriving in the United States on March 6 at an MSRP of $3,300, U.S. riders can finally experience Brompton’s boldest release yet.
A New Era for Folding Bikes
Historically, Brompton frames have been compact, with 16” wheels and a signature fold. The G Line raises the bar by mimicking the ride feel of a full-size bike while retaining the fold Brompton is famous for—one that compresses the bike into a locked package in under 20 seconds. This achievement comes from brand-new geometry and an expanded wheel size that the company states makes it “big on ride feel and compact in size.” Early adopters have praised it for its comfortable handling on everything from gravel paths to city streets.
Built for Versatility
Touted as a “one-bike solution for the city and beyond,” the G Line shines in both practicality and performance. Key features include:
- 20” Wheels: Custom-built to handle a variety of terrains, outfitted with puncture-resistant tires.
- Roller Rack & Fenders: Standard equipment that keeps you protected from wheel spray while adding cargo options.
- Hydraulic Disc Brakes: The first Brompton model to feature disc brakes, offering reliable all-weather stopping power.
- Wide Handlebars & Ergonomic Grips: Improved stability and comfort, especially over longer distances.
- Steel Chassis: Hand-brazed steel main frame with reinforced rear triangle, designed for durability.
- 8-Speed Drivetrain: Provides a broad gear range for tackling hills, flats, and everything in between.
Brompton reports that these folders have been tested over 250,000 kilometers to ensure they stand up to real-world conditions. Reviews from early testers in Europe echo this, noting that the G Line “rides like a full-size bike” yet still fits into a car trunk or train compartment.
Tailored Sizing and Travel-Ready
Available in three frame sizes—Small, Medium, and Large—the G Line caters to a range of rider heights. Despite the larger wheel diameter, the folded dimensions remain impressively compact at 28.3" x 26.2" x 16" (72cm x 67cm x 41cm). Tipping the scales at about 32.6 pounds for the base setup, it’s easy to carry and store in tight spaces.
Ready for Adventure
With a roller rack, plenty of bag-mount options, and clearance for wide tires, the G Line is equipped for anything from weekend bikepacking to daily commutes. As Brompton says, it’s “confident in all conditions and comfortable hour after hour.” A limited number of colorways—including the standout Adventure Orange—make it as stylish as it is functional.
For those eager to try it, Brompton is hosting a nationwide test-ride tour, giving prospective buyers a hands-on look. With its adaptability, folding convenience, and off-road potential, the G Line promises to broaden the horizons of folding bike enthusiasts everywhere.
