G4 vs G4 Ultra: Raw Power or Refined Dual-Drive Performance?

G4 vs G4 Ultra: Raw Power or Refined Dual-Drive Performance?

The KuKirin G4 and G4 Ultra share a name, a platform, and a top speed. But they deliver that performance in completely different ways.

The G4 is a raw-power single-motor machine. The G4 Ultra is a refined dual-drive flagship.

Choosing between them is not about which is "better" — it is about which one matches how you ride. This guide breaks down every difference so you can decide with confidence.

Power System: The Core Difference

<img src="your-image-url.jpg" alt="KuKirin G4 single rear motor vs G4 Ultra dual front and rear motors">

This is the most important distinction between the two scooters.

The G4 uses a single 2000W motor driving the rear wheel. All power goes through one wheel. The result is strong, direct acceleration — a classic "single motor" feel with plenty of punch.

The G4 Ultra uses two 1000W motors — one in the front wheel and one in the rear. This changes the riding experience entirely:

Dual motor advantages:

  • Better traction — power is distributed across two contact points

  • Faster response — two smaller motors react more quickly than one large motor

  • Improved hill climbing — the front motor pulls while the rear pushes

  • More stability at speed — the scooter feels planted and balanced

Single motor advantages:

  • Simplicity — fewer components, fewer things to maintain

  • Lower weight — the G4 is lighter than the G4 Ultra

  • Direct power feel — some riders prefer the raw, rear-driven character

The takeaway: The G4 delivers power. The G4 Ultra delivers control.

Speed: Same Top Speed, Different Delivery

<img src="your-image-url.jpg" alt="KuKirin G4 and G4 Ultra 70km/h top speed comparison">

Both scooters reach 70 km/h at their maximum setting.

The difference is how they get there. The G4's single 2000W motor delivers a strong, linear pull. The G4 Ultra's dual motors deliver acceleration that feels more immediate and more controlled — especially from a standstill.

At 70 km/h, the G4 Ultra's dual-motor traction makes the scooter feel more stable. The G4's rear-wheel drive is still capable, but less planted at high speed.

For most riders: The G4 Ultra feels faster, even though the top speed is identical.

Range: The G4 Ultra's Mode Advantage

<img src="your-image-url.jpg" alt="KuKirin G4 75km range vs G4 Ultra 80km ECO mode range">

The G4 offers up to 75 km of range on a single charge.

The G4 Ultra offers three different range figures, depending on which riding mode you choose:

  • ECO mode (20 km/h): up to 80 km

  • SPORT mode (40 km/h): up to 50 km

  • RACE mode (70 km/h): approximately 35 km

This is a significant difference. The G4 has one range figure — the G4 Ultra lets you choose between maximum range and maximum speed.

If you ride long distances at moderate speed: The G4 Ultra's ECO mode gives you more range than the G4.
If you ride at high speed constantly: Both scooters will deliver lower real-world range, but the G4's single-motor efficiency may give it a slight edge.

Braking System

<img src="your-image-url.jpg" alt="KuKirin G4 disc brakes vs G4 Ultra 160mm disc brakes comparison">

Both scooters use front and rear disc brakes with electronic cut-off. But there is a hardware difference.

The G4 uses standard disc brakes.

The G4 Ultra uses 160mm disc brakes on both front and rear — larger rotors that provide more stopping power and better heat dissipation.

Why it matters: Larger discs are more resistant to brake fade during repeated heavy braking — useful on long descents or in stop-and-go traffic.

Charging: The G4 Ultra's Biggest Practical Upgrade

<img src="your-image-url.jpg" alt="KuKirin G4 Ultra 5A fast charger vs G4 standard charger">

This is one of the most noticeable differences in daily use.

The G4 charges with a 2A charger and takes 10–11 hours to fully charge.

The G4 Ultra uses a 5A fast charger and charges in 5–6 hours — roughly twice as fast.

What this means for you:

  • G4: Charge overnight — 10-11 hours is a full night's sleep

  • G4 Ultra: Charge in half the time — you can top up during the day or after a morning ride

If you ride frequently and do not want to wait all day for a charge, this is a major advantage.

Display and Design

<img src="your-image-url.jpg" alt="KuKirin G4 Ultra large display screen and new stem design">

G4 display: 155×55mm LED screen showing speed, battery, mileage, cruise control, riding mode, and start mode.

G4 Ultra display: 155×55mm LED touchscreen (same size) with a redesigned layout and Bluetooth connectivity for audio and app features.

Both displays are functional and easy to read. The G4 Ultra adds the touchscreen interface and Bluetooth pairing.

Stem design: The G4 Ultra introduces a redesigned front stem for improved rigidity and steering feel at high speed.

Suspension: Both use dual cantilever spring suspension front and rear. The G4 Ultra's tuning is slightly more refined.

Charging Time Comparison

<img src="your-image-url.jpg" alt="KuKirin G4 10-11 hour charging vs G4 Ultra 5-6 hour fast charging">



Detail G4 G4 Ultra
Charger output 2A 5A
Full charge time 10–11 hours 5–6 hours
Practical difference Overnight charging Charge during the day

Which One Should You Choose?

<img src="your-image-url.jpg" alt="KuKirin G4 vs G4 Ultra choosing the right performance scooter">

Choose the KuKirin G4 If:

  • You want raw, direct power from a single motor

  • You value simplicity — fewer components, easier maintenance

  • You want a lighter scooter (the G4 is lighter than the G4 Ultra)

  • Your rides are mostly flat or moderate terrain

  • You do not need dual-motor traction

  • You want to save money — the G4 is the more affordable option

Choose the KuKirin G4 Ultra If:

  • You want dual-motor traction for better grip and stability

  • You ride on mixed surfaces — gravel, wet roads, or uneven terrain

  • You value fast charging — 5–6 hours vs 10–11 hours makes a real difference

  • You want the option of 80 km range in ECO mode

  • You appreciate premium braking — 160mm discs front and rear

  • You want Bluetooth connectivity and a touchscreen display

  • You are an experienced rider who wants the most complete performance package

Frequently Asked Questions (FAQ)

Q1: What is the main difference between the G4 and G4 Ultra?

The G4 has a single 2000W rear motor. The G4 Ultra has two 1000W motors — front and rear. This gives the G4 Ultra better traction, faster response, and improved hill climbing.

Q2: Do they have the same top speed?

Yes — both reach 70 km/h. The difference is in acceleration feel and stability, not top speed.

Q3: Which has more range?

The G4 offers up to 75 km. The G4 Ultra offers up to 80 km in ECO mode, 50 km in SPORT, and 35 km in RACE. If you ride in ECO mode, the G4 Ultra has more range. At high speed, the G4's single motor is slightly more efficient.

Q4: Why does the G4 Ultra charge so much faster?

It uses a 5A fast charger instead of the G4's 2A charger. This cuts charging time from 10–11 hours to 5–6 hours.

Q5: Which has better brakes?

The G4 Ultra has 160mm disc brakes front and rear — larger than the G4's standard discs, providing stronger stopping power and better heat dissipation.

Q6: Is the G4 Ultra worth the extra cost?

If you value dual-motor traction, fast charging, and premium brakes — yes. If you mostly ride on flat roads and want simple power, the G4 offers excellent value.

Conclusion: Raw Power or Refined Control?

The G4 and G4 Ultra are both high-performance scooters. They share a platform, a top speed, and a design language. But they are built for different riders.

The G4 is the raw-power option — a single 2000W motor, direct acceleration, and simple, proven design.

The G4 Ultra is the refined flagship — dual motors, traction, fast charging, and a more complete riding experience.

Match the scooter to your ride, and you will not be disappointed.

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