The KuKirin G4 and G4 Ultra share a 60V 20Ah battery specification and a manufacturer-stated top speed of up to 70 km/h. The main difference is how the motors deliver power: one 2000W rated rear motor on the G4, versus two 1200W rated motors on the G4 Ultra.
Both are high-performance models. Before choosing either, check where it can be used under local rules, how often you need to lift or store it, and the route on which you expect to ride.
G4 vs G4 Ultra at a glance
| Specification | KuKirin G4 | KuKirin G4 Ultra |
|---|---|---|
| Rated motor power | 2000W rear motor | 2 × 1200W motors |
| Battery | 60V 20Ah | 60V 20Ah |
| Manufacturer-stated maximum range | Up to 75 km under suitable conditions | Up to 80 km in ECO under specified test conditions |
| Manufacturer-stated maximum speed | Up to 70 km/h | Up to 70 km/h |
| Tyres | 11-inch tubeless | 11-inch tubeless |
| Brakes | Front and rear disc brakes | Front and rear disc brakes with motor power cut-off |
| Net weight | Approx. 34.5 kg | 37.6 ± 0.5 kg |
The maximum range figures are not directly comparable without the same test method. The G4 Ultra product page gives separate ECO, SPORT and RACE figures: up to 80, 50 and 35 km respectively under stated conditions. Actual distance can be lower with hills, higher speed, cold weather, tyre pressure differences and a heavier rider.
Compare current listings: See G4 price and availability · See G4 Ultra price and availability
Where the G4 makes sense
The G4 has a single 2000W rated rear motor, front and rear suspension, 11-inch tubeless tyres and disc brakes on both wheels. Its published net weight is approximately 34.5 kg. If you want a powerful single-motor setup and need to consider storage or carrying weight, start with the G4 specifications.
Where the G4 Ultra makes sense
The G4 Ultra has two 1200W rated motors. Its current product page lists a 60V 20Ah battery, 11-inch tubeless tyres, front and rear spring suspension, disc brakes with motor power cut-off, and a net weight of 37.6 ± 0.5 kg. Riders who specifically want dual-motor drive should review its mode-specific range figures and the extra listed weight. Check the G4 Ultra specifications and current stock.
Which should you choose?
Choose the G4 if its single-motor setup meets your riding needs and lower listed weight matters. Consider the G4 Ultra if dual-motor output is the feature you are looking for and the extra weight is acceptable. Compare the current product listings for your destination before making a decision; price and availability can change.
Neither model should be described as automatically approved for public-road use because a lower mode can be selected. The published maximum speed exceeds public-road limits in many markets. Check local requirements and use the scooters only where permitted.
Next step: Review the G4 or review the G4 Ultra. The product page and checkout show the current price, stock, destination eligibility and delivery details.
Frequently asked questions
Does the G4 Ultra have two motors?
Yes. The current product listing specifies two 1200W rated motors. The G4 specifies one 2000W rated rear motor.
Is the G4 Ultra's range always longer?
No. The published maximums use different conditions. The G4 Ultra's listed range also changes by riding mode; its product page specifies up to 80 km in ECO, 50 km in SPORT and 35 km in RACE under test conditions.
Are the G4 and G4 Ultra road legal?
Rules vary by country. A speed setting alone does not establish approval for public-road use. Check the exact model documents and local requirements before riding.
