Brompton G Line 8-Speed Bike
The one-bike solution for the city and beyond, the Brompton G Line 8-Speed Bike is big on ride feel and compact in size so you can take it with you wherever you go and onto all types of surfaces.
Key Details
- You can run a rack, fenders and bags, add water bottles, and even store your toolkit inside the frame (rack and fenders included; bags, water bottles and toolkit not included)
- Frame geometry is comparable to a full-size bike, yet it transforms into a compact package that stores and travels easily so you can go anywhere
- With the original Brompton fold, the G Line transforms into a compact, locked package in under 20 seconds
- Folding design easily goes on trains, travels in car trunks and stores in small spaces (including 1-person tents)
- Folded Size: 28.3 in. deep x 26.2 in. high x 16 in. wide (72 cm deep x 67 cm high x 41 cm wide)
- Hydraulic disc brakes provide dependable stopping power
- Confidently tackles everything from dusty singletrack to rain-soaked cobblestone roads
- Rigorously tested over 250,000 km to meet industry standards and Brompton standards
- Solidly built 20 in. wheelset comes equipped with custom-made, puncture-resistant tires
- Stay in control with the custom-made handlebar
- Includes wide platform pedals; left pedal can be released with a quick squeeze and pull to make your folded bike even more compact
- Large-diameter front carrier block adaptor for all types of Brompton luggage (not included)
- Comes with reflectors
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Cycling |
|---|---|
| Frame | Hand-brazed steel main frame |
| Foldable | Yes |
| Step-Through | Yes |
| Bike Suspension | Front / Seat Suspension |
| Fork | Aluminum fork with mounting bosses |
| Crankset | 54T |
| Bottom Bracket | Unavailable |
| Shifters | Microshift |
| Number of Gears | 8 gear(s) |
| Internally Geared | Yes |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Tektro hydraulic disc brakes with 140 mm rotor |
| Brake Levers | Unavailable |
| Rims | Unavailable |
| Front Hub | Unavailable |
| Rear Hub | Shimano Alfine Hub System |
| Wheel Size | 20 inches |
| Tires | Schwalbe G-One All Round 54-406, tan wall |
| Tire Width | 2.15 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Custom Made |
| Stem | Folding |
| Seat Post | M: Brompton Extended L: Brompton Telescopic |
| Saddle | Brompton Superlight |
| Pedals | Wide Platform Quick-Release |
| Headset | Brompton headset |
| Chain | Unavailable |
| Weight | 33 pounds |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
| M | L | |
|---|---|---|
| Height Range | 5'6"-6'0" | 6'0"-6'6" |
| Reach | 483 | 504 |
| Stack | 687 | 697 |
Sizing Notes
Measurements are stated in millimeters unless otherwise noted.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
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Perfect bike just need to lose the weight :-)
I am a long time fan of Brompton. I travel a lot in the USA and Canada. After work, instead of staying in Hotel jump on a bike and explore, exercise. It's so convenient to go to Restaurant grocery store so I don't have to eat Hotel food which I hate after 12 years. Now the G line. Its the same concept, just kinda different :-) I am 6'3" 210 pounds male and regular Brompton felt just short a bit for me so I look like Elephant on Circus bike :-))) It's like, you wear Shoes Number 12 but have 11 1/2 they are ok but a little bit tight....... G line is 12 :-))) Feels great, drive Amazing if you intend to use Bike more on gravel keep the original tires they are great I switch to Continental 1.75 as I mainly drive on asphalt. 8 Speed plenty for any type of riding, I do have a bit issue with proper adjustment of Shimano hub but work in progress .... With original tires I rode 30 minutes around a state park through different terrain and its perfectly cool but don't plan to use the G line just to do that…Continental ones on asphalt drives like Rolex :-) It is on the heavy side. My regular Brompton is 10 kilos G line is 14 bit difference. Nothing negative, only what would be nice to see in next generation is lighter material, shred some weight will make this bike ultimate foldy