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Gocycle G4i vs Brompton Electric G Line

Buy the Gocycle G4i if you want a lighter, faster-charging folder with electronic shifting and a carbon fork for city commuting. Buy the Brompton Electric G Line if you want bigger 20-inch wheels, all-terrain tires and a proven folding design for mixed surfaces. The G4i is $3,999.99 at Bicycle Garage as of November 4, 2026; the Brompton is $4,995.00 at BikePartners.net, about $995 more.

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Gocycle
Gocycle G4i

Gocycle G4i

Choose the Gocycle G4i if your rides are mostly paved urban commutes and you value low weight, a 3.5-hour charge and predictive electronic shifting.

Pros
  • Light for a folder at 17.6 kg
  • 3.5-hour charge time
  • Predictive electronic shifting and enclosed drivetrain
  • Carbon fibre fork with Lockshock
USB-C port for charging devices
Cons
  • 220 lb maximum rider weight, including clothing and luggage
  • 50-mile range is modest
  • Front hub motor rather than mid-drive
  • Urban surfaces only
Brompton
Brompton Electric G Line

Brompton Electric G Line

$4,995.00at BikePartners.netObserved at 1:22 PM
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Choose the Brompton Electric G Line if you ride gravel or rough pavement and want 20-inch wheels, 2.13-inch all-terrain tires and the classic Brompton fold.

Pros
  • 20-inch wheels roll better over rough ground
  • 2.13-inch all-terrain tires suit gravel and mixed surfaces
  • Classic Brompton folding design
  • Rear hub motor with pedal assist to 20 mph
  • Five color options
Cons
  • $995 more than the Gocycle
  • Heavier and less compact than the original Brompton promise
  • Only 4 speeds
  • Range and weight not published in the given specs

What separates them

Gocycle G4iBrompton Electric G Line
Price (new, as of November 4, 2026)$3,999.99 at Bicycle Garage$4,995.00 at BikePartners.net
Weight17.6 kg (about 38.8 lb)Heavier; Brompton does not list a weight in the given specs
Wheels and tiresSmall wheels, urban surfaces only20-inch wheels with 2.13-inch Schwalbe One all-terrain tires
DrivetrainPredictive electronic shifting, enclosed drivetrain4-speed, rear hub motor
Motor500W front hub motor, 20 mph US top speedRear Class 1 hub motor, pedal assist to 20 mph
Range and chargingUp to 50 miles; 3.5-hour chargeNot listed in the given specs
Fork and suspensionCarbon fibre fork with LockshockNot listed in the given specs
TerrainUrban surfacesGravel-capable G Line platform

Price history

$4,950.00$3,999.00
Oct 28Nov 4
  • Gocycle G4i: lowest $3,999.00 on Oct 28; $3,999.99 on Nov 4.
  • Brompton Electric G Line: lowest $4,950.00 on Nov 4 at REI.

Prices at every store

Gocycle G4i

  • Bicycle GarageCheck price at Bicycle Garage
Prices and history →

Brompton Electric G Line

  • BikePartners.netNew

    In stock

    $4,995.00Observed at 1:22 PM
    Visit store
  • REINew

    In stock

    $4,950.00+ $85.00 shippingObserved at 1:21 PM
    Visit store
All 2 stores and price history →

Specs compared

SpecGocycle G4iBrompton Electric G Line
ElectricYesYes
ColorMatte BlackWhite, Green, Forest Green, Traildust White, Ad…
Tire Width2.25 in2.13 inch tires
Frame MaterialAluminum—
RangeUp to 80km (50 miles)—
Charging time3.5 hours—
Weight17.6kg—
ShiftingPredictive Electronic Shifting—
BatteryQuick removable lithium ion: 10.4Ah, 36V, appro…—
Smart device connectivityGocycleConnect® App via wireless Bluetooth®—
USB-C charger portUSB Type-C port, 1.5 amp—
Maximum rider weight100kg (220 lbs), including clothing and luggage—
Show all 37 specsShow fewer specs
SpecGocycle G4iBrompton Electric G Line
Motor500W front hub motor—
Top speed20 mph (32 km/h) in the US—
With Hydraulic BrakeYes—
Intended UseCommuting—
Usage TerrainUrban surfaces—
Age RangeADULT—
Suitable TerrainUrban surfaces—
Typical UsersCommuters—
Maximum Speed25 kph—
Riding Style

What reviewers say

Gocycle G4i

Owners and reviewers treat the G4i as a premium, design-led folder. They praise the smooth predictive shifting, the clean enclosed drivetrain and the light weight for a folding e-bike. Common complaints are the high price, the modest range and the 220 lb weight limit.

Pros
  • Predictive electronic shifting is smooth and takes thought out of gear changes
  • Enclosed drivetrain stays clean and needs little maintenance
  • Light and compact when folded for a full-feature e-bike
  • Distinctive automotive-inspired design and integrated lights
Cons
  • High price compared with rival folders
  • Range falls short on longer or hilly commutes
  • 220 lb weight limit excludes some riders
  • Proprietary parts and servicing can be inconvenient

Questions and answers

Which is better for a daily city commute?
The Gocycle G4i. It is lighter at 17.6 kg, charges in 3.5 hours and has electronic shifting for stop-and-go traffic. The Brompton G Line is built for rougher surfaces.
Which handles gravel better?
The Brompton Electric G Line. Its 20-inch wheels and 2.13-inch Schwalbe all-terrain tires are made for mixed surfaces. The Gocycle is listed for urban surfaces only.
Is the Brompton worth about $995 more?
Only if you need the bigger wheels and all-terrain tires. On price, weight and charging speed, the Gocycle G4i wins.
Which carries more weight?
The Gocycle is rated to 100 kg (220 lbs) including clothing and luggage. Brompton does not publish a comparable figure in the given specs, so check before buying if you are near that limit.
Which folds smaller?
The Brompton's classic fold is the more compact design. The Gocycle folds too, but its 1065 mm wheelbase and 17.6 kg weight make it the bulkier package.
Do both reach 20 mph?
Yes. The Gocycle's 500W US motor tops out at 20 mph, and the Brompton's rear Class 1 hub motor assists to 20 mph.

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Commuting
—
Load Capacity100 kg (220 lbs) (including clothing and luggag…—
Bike TypeElectric bike—
Design HighlightsPatented automotive-inspired Daytime Running Li…—
Frame TypeFolding—
Frame Fork MaterialCarbon Fibre—
Frame Shock AbsorberGocycle Lockshock—
Wheelbase1065 mm (42 in)—
Suspension TypeRear suspension—
Rear Suspension Travel25 mm (1 in)—
Rear Suspension TypeElastomer suspension arm—
Suspension ShockGocycle Lockshock—
Suspension HighlightsLockshock—
Tire Diameter20 in—
Wheel Size—20 inch wheels
Number Of Speeds—4 speed