KuKirin G4 Ultra vs G3 Pro: Which Dual-Motor Flagship Is Right for You?
If you're shopping for a high-performance dual-motor electric scooter, the KuKirin G4 Ultra and G3 Pro are likely at the top of your list. Both pack dual motors, both deliver thrilling acceleration, and both sit at the flagship end of KuKirin's lineup. But their personalities couldn't be more different.
The G4 Ultra is the newer contender, built around fast charging, a massive display, and lighter weight. The G3 Pro is the proven powerhouse, defined by hydraulic suspension and oil-pressure brakes.
So which one is right for you? Let's break it down across power, range, braking, suspension, weight, and real-world usability.
Power and Top Speed: Which One Is Faster?
G4 Ultra: 60V Platform, 70km/h Top Speed
The G4 Ultra runs 1000W × 2 dual motors, with peak output reaching 1200W × 2. Its key advantage is the 60V high-voltage platform, which gives it a higher top speed of 70km/h — even under a 65kg load.
In practice, the 60V system doesn't just mean a higher ceiling. It also delivers stronger mid-range acceleration, so overtaking and climbing feel more effortless.
G3 Pro: 52V Platform, 2400W Peak Power
The G3 Pro also uses dual motors, rated at 1200W × 2 with peak output of 1500W × 2 — a combined 2400W. Its top speed is 65km/h, slightly below the G4 Ultra but still plenty fast for most riders.
The 52V platform is lower in voltage, but the G3 Pro compensates with a larger battery pack (23.4Ah vs 20Ah).
Verdict: Want maximum speed? Go G4 Ultra. If 65km/h is enough, the G3 Pro still has serious power on tap.
Range and Charging: Fast Charging Changes Everything
G4 Ultra: 5A Fast Charging, Full in 5–6 Hours
The G4 Ultra ships with a 67.2V / 5A fast charger — its most underrated feature. A full charge takes just 5–6 hours, roughly half the time of the G3 Pro on a single charger.
In real terms, the G4 Ultra reaches 0–80% in about 3–4 hours. Plug it in over lunch and you're ready to ride again in the afternoon. For commuters, that's a genuine lifestyle difference.
Range-wise, the 60V 20Ah (~1200Wh) battery delivers 80km in ECO, 50km in SPORT, and 35km in RACE mode.
G3 Pro: Dual Charging Ports, Bigger Battery
The G3 Pro carries a larger 52V 23.4Ah (~1206Wh) battery, with a claimed 80km range at medium speed.
It also has dual charging ports, so you can run two chargers simultaneously and cut charging time to about 3 hours. Just note that only one charger is included by default — the second is sold separately.
Verdict: The G4 Ultra is fast out of the box. The G3 Pro can match it, but only if you buy a second charger. For daily commuting efficiency, the G4 Ultra wins.
Braking and Suspension: Where Safety and Comfort Diverge
Braking Systems
The G4 Ultra uses front and rear disc brakes + motor cut-off. Disc brakes are reliable and easy to maintain, but modulation isn't as refined as hydraulic systems.
The G3 Pro upgrades to front and rear hydraulic disc brakes + electronic brake. Hydraulic brakes offer more linear, predictable stopping power — a real confidence boost at 60km/h+.
Suspension Systems
The G4 Ultra features dual swingarm spring suspension front and rear. It's simple and effective on paved roads and light gravel.
The G3 Pro runs hydraulic damping suspension front and rear. Hydraulic damping absorbs high-frequency vibration far better than springs alone, making rough roads noticeably more comfortable.
Verdict: Ride off-road or want the best brake feel? The G3 Pro's hydraulic setup is the better choice. For pure city commuting, the G4 Ultra is more than enough.
Tires and Ride Quality: 10-Inch vs 11-Inch
| Spec | G4 Ultra | G3 Pro |
|---|---|---|
| Tire Size | 11-inch (90/55-7.5) | 10-inch (255*80mm) |
| Type | Tubeless | Pneumatic |
| Recommended Pressure | 340 kPa (50 psi) | 350 kPa (50 psi) |
The G4 Ultra's 11-inch tubeless tires are a major highlight. Larger wheels roll over obstacles more easily and feel more stable at speed. Tubeless also means slower air loss if you get a puncture.
The G3 Pro's 10-inch pneumatic tires are comfortable enough, but the smaller diameter translates to a choppier ride on rough surfaces.
Verdict: The G4 Ultra's bigger wheels and tubeless design win on both ride quality and maintenance.
Weight and Portability
| Spec | G4 Ultra | G3 Pro |
|---|---|---|
| Net Weight | 37.6 kg | 43.6 kg |
| Folded Size | 1340 × 650 × 562 mm | 1295 × 630 × 595 mm |
The G4 Ultra is a full 6kg lighter than the G3 Pro. If you carry your scooter up stairs or lift it into a car trunk, that difference is huge. At 43.6kg, the G3 Pro is genuinely difficult to move around. At 37.6kg, the G4 Ultra is still heavy — but manageable.
Folded dimensions are similar, with the G4 Ultra slightly longer but narrower.
Verdict: If you need to transport your scooter regularly, the G4 Ultra is the smarter pick.
Display and Smart Features
The G4 Ultra features a 294 × 42 mm integrated display — one of the largest in KuKirin's lineup. The extra screen real estate makes speed, battery, and mode info easy to read at a glance, no squinting required. It also supports Bluetooth audio.
The G3 Pro uses a 133 × 76 mm display, which is clear and readable but noticeably smaller. It supports P1–PC parameter customization, including cruise control, start mode, and speed limits.
Verdict: The G4 Ultra's larger screen is a genuine usability upgrade on the road.
Buying Advice: Which One Should You Choose?
Choose the KuKirin G4 Ultra if you:
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Want faster charging — the 5A charger means daytime top-ups are actually practical
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Value portability — 37.6kg vs 43.6kg makes a real difference
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Prefer a big display — 294mm wide screen for instant readability
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Ride mostly in the city — spring suspension + disc brakes handle paved roads fine
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Want bigger tires — 11-inch tubeless for better obstacle clearance
Choose the KuKirin G3 Pro if you:
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Ride on rough or unpaved surfaces — hydraulic suspension is far more comfortable
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Want the best brake feel — hydraulic discs offer superior modulation
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Need maximum battery capacity — 23.4Ah vs 20Ah, about 17% more
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Don't mind the weight — if your scooter has a fixed parking spot, 43.6kg is fine
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Prefer a proven platform — the G3 Pro has more aftermarket support and mods
FAQ
Q1: Which is faster, the G4 Ultra or G3 Pro?
A: The G4 Ultra tops out at 70km/h, while the G3 Pro reaches 65km/h. The G4 Ultra's 60V platform gives it the edge in top speed.
Q2: Which one charges faster?
A: The G4 Ultra includes a 5A fast charger and fully charges in 5–6 hours. The G3 Pro takes 6–7 hours on a single charger, but supports dual charging — two chargers cut it to about 3 hours (second charger sold separately).
Q3: Is the G3 Pro's hydraulic suspension much better than the G4 Ultra's spring suspension?
A: On smooth pavement, the difference is small. On gravel, potholes, or long rides, hydraulic damping absorbs high-frequency vibration far better than springs alone — a noticeable comfort upgrade.
Q4: Which is better for daily commuting?
A: For paved city routes, the G4 Ultra wins with faster charging and a bigger display. If your commute includes rough roads or you want better brake feel, the G3 Pro is the better fit.
Q5: Do both scooters have the same max load?
A: Yes — both are rated for 120kg.
Final Thoughts
The G4 Ultra and G3 Pro represent two different flagship philosophies. The G4 Ultra prioritizes efficiency and tech — fast charging, a huge display, lighter weight, and bigger tires. The G3 Pro prioritizes mechanical quality — hydraulic suspension, oil brakes, and a larger battery.
There's no universal "better" — only what fits your riding style.