Dualtron Ultra 2 Upgrade

The Dualtron Ultra 2 Upgrade is a high power off road electric scooter built around a 72V dual motor setup. It feels more like a compact electric dirt bike than a casual city scooter. So it fits riders who want strong hill climbing, serious speed, and real range in one package.

On paper, the specifications place it in the top tier of performance scooters. In practice, the Ultra 2 Upgrade works best for experienced riders who already feel steady at higher speeds and want to go a step further.

What Is the Dualtron Ultra 2 Upgrade?

The Dualtron Ultra 2 Upgrade, often called Ultra 2 UP, is a refreshed version of the original Ultra 2. The frame, swingarms, and long deck will look familiar if you know earlier Dualtron models. The big changes sit in the battery, the cockpit hardware, and the electronics.

You get a 72V 40 Ah battery built from modern 21700 cells, which gives around 2.9 kWh of energy. Then that pack feeds two brushless hub motors that sit inside the 11 inch wheels. Nominal power sits near 2000 W per motor, while peak output climbs much higher under load. So the scooter pulls hard when you open the throttle.

In many regions, the scooter ships with a 25 km/h (15.5 mph) speed limit for public roads. On private land with the limit opened, owners often report top speeds close to 95–100 km/h (around 60 mph), depending on weight and conditions. That kind of pace needs space, skill, and good gear.

The Ultra 2 Upgrade rolls on 11 x 3.5 inch knobby pneumatic tires and uses rubber cartridge suspension at both ends. Plus, it runs Nutt hydraulic disc brakes and electronic braking. The old EY3 style screen is gone. Instead, you get the larger EY4 color display with Bluetooth and app support, which makes the scooter feel more modern.

So you end up with a long range, high power off road scooter that still folds and fits in many car trunks, even if you will not want to carry it far.

How the Dualtron Ultra 2 Upgrade Works

The drive system stays simple. Each wheel hides a motor, the deck holds the big battery, and the rear footrest houses the controllers. There is no chain and no belt. So you avoid those extra wear parts.

When you pull the trigger throttle, the EY4 sends a signal to the controllers. Then they raise current step by step and push it to the hub motors. If you choose a soft power mode, the ramp feels gentle. If you pick a stronger mode, the scooter surges harder and reaches speed much faster. You can tweak current limits, start strength, and even ABS behavior in the menu.

Braking uses two systems at once. First, the hydraulic calipers clamp 160 mm rotors at each wheel as you squeeze the levers. Next, a sensor tells the controllers to turn the motors into generators. This motor braking slows the scooter and feeds a bit of power back into the battery. You can raise or lower regen power in the settings until the feel matches your taste.

Lights and controls pull power from the main pack. A bright headlight sits up front. Then stem LEDs, deck strips, tail lights, and turn signals wrap around the scooter. A compact switch block near the left grip lets you toggle lights, indicators, and horn without moving your hands. The EY4 display shows speed, mode, trip, temperature, and battery in a clear layout.

All of this makes the Ultra 2 Upgrade feel like a compact e-moto with a very clean drivetrain. Most of the action lives in the electronics. So as long as you treat the battery and controllers well, there is not much to maintain beyond tires, brakes, and bolts.

Key Specifications

This section sums up the core factory numbers for the Dualtron Ultra 2 Upgrade. Exact values can shift slightly between regions, yet this list gives a solid baseline.

These specifications help you see where the Dualtron Ultra 2 Upgrade sits beside other strong scooters and small e-motos.

Design & Build Quality

The design leans toward rugged instead of sleek. The deck is long and wide, with a flat top plate and lots of bolts that hold everything together. So it looks and feels tough. A rubber or grip tape layer sits on top and keeps your shoes from sliding, even when dirt and dust build up on long off road rides.

The stem uses a square tube with an upgraded folding block. The clamp sits higher up, and the hinge plates are wider than older Dualtron setups. This change cuts flex in the steering column and reduces play over time. Then the 685 mm wide bar gives your shoulders a natural stance while you ride. It feels broad enough for control but not so wide that doors become a problem.

Up at the cockpit, the EY4 display sits near your right hand. The trigger throttle sits under your index finger. On the left, a compact switch unit handles lights, turn signals, and horn. Both brake levers are reach friendly. The screen is bright and simple. So you glance down and read speed or battery without digging through tiny icons.

At the rear, the welded footrest acts like a mini tail. You plant your back foot there under hard braking or strong launches. Inside that part, the controllers stay tucked away from dirt and spray. Cooling fins help move heat out when you push the scooter hard.

Fasteners, swingarms, and clamps all look thick. So the whole scooter feels like it can handle rough paths, not just smooth bike lanes. Paint and finish quality depend a bit on batch and care, yet the base build is heavy duty. In short, it looks like a machine built to be ridden, not just displayed.

Performance Fundamentals

Power is the main draw here. When both motors run in a stronger mode, the Dualtron Ultra 2 Upgrade jumps forward as soon as you move the trigger. So most riders start in a softer mode and then raise power once they get used to the feel. With a good stance and decent road grip, launches feel strong but manageable.

The throttle is fairly smooth. At the start of travel, you get a slow and controlled roll. This helps in parking areas, tight turns, or packed bike lanes. Then, as the trigger moves deeper, the power builds fast. On a clear road, that quick shove feels fun. On a rough trail, it helps you climb out of dips and over roots without losing pace.

At city speeds around 40–50 km/h (25–31 mph), the scooter feels stable when tires and road conditions stay reasonable. The long wheelbase and wide handlebar give you leverage to correct small wobbles and cross cracks without drama. So normal commuting pace does not feel like a fight.

At higher speeds, the rider matters almost as much as the machine. A staggered stance with one foot forward and one back on the rear step keeps weight balanced. Then a light yet firm grip on the bar helps avoid oversteering. Many owners add a steering damper once they start spending more time near top speed. That extra hardware calms the front end on long, fast descents.

Hill climbing is where the scooter shows its muscle. Long 7–10% road climbs feel like slight inclines instead of walls. Heavier riders still keep a good pace without watching speed bleed away. On short, steep ramps, the Ultra 2 Upgrade pulls like a small dirt bike. Grip becomes the limit before the motors give up, so smooth throttle helps here.

Battery, Range & Efficiency

The 72V 40 Ah pack is the main reason many riders pick this model. Around 2.9 kWh of energy gives you real distance, not just a short loop around the block. So it suits long suburban runs and weekend trail rides.

Official range numbers sit a bit all over the place. Some sellers quote roughly 120–130 km in ECO mode with a light rider. Others mention up to about 160 km in very gentle tests. Real life looks different. In real use, speed, weight, and terrain pull range down.

Think of it like this. A heavier rider who likes brisk starts and cruises near 40–50 km/h on mixed pavement might see something closer to 60–80 km (37–50 mi). A lighter rider who stays near 25–30 km/h in ECO mode and rides smooth roads can push range higher.

Several things change how far you get:

• Rider weight and gear
• Average speed on flats
• Hills and frequent climbs
• Tire type and pressure
• Wind and temperature

Knobby off road tires roll slower than slicks on pavement. Cold days reduce both battery output and grip. So range tends to fall in winter, even if the route stays the same.

You can stretch range with a few simple habits. Pick calmer modes through busy areas, then switch up only when the street opens. Keep tires in the recommended pressure window. Avoid long sessions of full throttle if you want distance instead of pure fun. Then plan routes that skip the steepest climbs when you just want to reach work or home.

Charging time depends on how you use the ports. One stock charger is slow and better for long rests. Two stock chargers bring times into a more acceptable window. A quality fast charger near 5 A makes overnight fills easy even from a low state of charge. Many riders keep one charger at home and one at work or a second location.

For battery health, it helps to stay away from full drains and long storage at 100%. Daily riding between roughly 20% and 90% feels like a good middle ground. When you plan to park the scooter for weeks, leaving it near half charge and in a cool, dry room gives the pack an easier life.

Ride Quality & Comfort

Ride comfort comes from the rubber suspension, the big tires, and your stance. Each swingarm presses against a rubber cartridge instead of a coil spring. So you have fewer moving parts and no shock oil to worry about. Different rubber stiffness options give you a bit of tuning room.

Soft cartridges feel nicer at lower speeds and on smaller bumps. They let the scooter float a bit over cracks and gravel. Firmer rubber suits heavier riders or more aggressive off road use. In that setup, the scooter feels tighter and more direct. It will still handle bumps, yet it will not wallow when you land or brake hard.

Next come the 11 x 3.5 inch off road tires. On dirt and forest paths, the knobs dig in and help you hold a line. They shed loose gravel and work well on soft ground. On pavement, they add some noise and a bit of vibration. So you feel more feedback than with smooth road tires. Some owners keep a second set of wheels or tires with street patterns for days when they stay on asphalt.

The deck layout supports a strong stance. It is long enough for a diagonal stance with both feet on the main deck, or you can put your rear foot on the raised back step. So you can shift weight easily when you brake, turn, or hit bumps. The stem height and bar width fit average and tall riders well. Shorter riders can still feel fine, especially if they play with bar angle or grips.

Stem flex is present yet controlled. The updated clamp and wider hinge pieces help here. At modest speeds, steering feels steady. At higher pace, your stance and any steering damper upgrade make the final difference. For long high speed rides, a damper takes some stress out of your hands and shoulders.

Over long distances, the wide bar and roomy deck help fight fatigue. Padded gloves and a slightly softer deck mat can smooth out small vibrations, especially on bad roads.

Braking & Safety Features

Braking is a strong point on the Dualtron Ultra 2 Upgrade. The Nutt hydraulic system uses 160 mm rotors at both ends, which gives real stopping power. Lever feel is firm and easy to modulate. So a small pull gives gentle slowing, and a deeper pull brings strong stops.

Electronic braking adds more control. When you use the levers, sensors tell the controllers to apply motor braking. You feel it as a smooth drag that helps the hydraulic system. In long downhill sections, regen takes some load off the discs and pads. You can move regen strength up or down in the EY4 menu until it feels right.

Then you get ABS style behavior from the controllers. The system pulses motor braking to reduce wheel lock on low grip surfaces. It is still wise to test this in a safe area first. That way you know how the scooter reacts before you hit a panic stop on a busy road.

Lighting is strong for both city and trail use. A bright headlight lights up the path ahead. Stem and deck LEDs make the scooter stand out from the side. Rear lights act as both tail and brake lights. Turn signals at the front and back help others understand what you plan to do next. A loud electric horn covers the audio side in traffic.

Splash resistance keeps the scooter safe in light rain and on damp streets. Still, deep puddles, heavy storms, and pressure washers are not friendly to this kind of machine. So most riders treat serious rain as a sign to slow down or park the scooter.

With this kind of speed and weight, safety gear becomes part of normal riding. A strong full face helmet or at least a very solid open face lid makes sense. Then gloves, knee protection, and a jacket with padding turn minor crashes into manageable events instead of hospital trips.

Portability & Daily Usability

The Dualtron Ultra 2 Upgrade weighs around 45–46 kg. So calling it “portable” is relative. Rolling it across a parking lot or up a short ramp feels fine. Carrying it up several flights of stairs every single day feels rough for most people.

Folded size around 126 × 69 × 75 cm will fit into many hatchbacks and crossovers. The folding handlebar and improved clamp help bring the profile down. The folding process has a few steps, yet it becomes routine once you do it a few times. The payoff shows up later when the stem feels solid at speed.

Daily use depends heavily on storage. Riders with ground floor storage, a garage, or a home with a lift have a much easier time. They roll the scooter in, drop the stand, plug in the charger, and walk away. People in walk up apartments with narrow staircases often realize that this model is just too heavy for daily in and out hauling.

Security needs extra thought as well. The scooter has a high resale value and stands out. So a thin cable lock will not cut it. A thick chain or sturdy folding lock around the frame and a fixed anchor works better. Many owners store the scooter indoors at night and add a tracker hidden inside the deck or stem. The EY4 lock and PIN features give a small extra layer on top, yet a good physical lock still matters most.

For short errands, the Ultra 2 Upgrade can still work if you have safe parking or can bring it inside shops or offices. For train and bus hops where you must lift and carry often, it feels like overkill.

Dualtron Ultra 2 Upgrade vs Alternatives

Inside the scooter world, the Dualtron Ultra 2 Upgrade lives in the 72V high power class. Scooters in this band share dual motors, wide 11 inch tires, hydraulic brakes, and strong batteries.

First, think about small commuter scooters that top out around 30–35 km/h. Those models weigh far less, cost less, and fold easier. They fit riders who just want simple trips to work or the store. In that crowd, the Ultra 2 Upgrade feels heavy, expensive, and far too strong. A model like the Xiaomi Electric Scooter 4 Ultra makes more sense if your rides are short and mostly flat.

Next, place the Ultra 2 Upgrade against mid tier 60V dual motor scooters. Those machines give good speed and useful range while staying lighter than this one. Still, they lose some hill climbing power and top speed, and their range drops faster under heavy riders. So the Ultra 2 Upgrade suits anyone who wants stronger climbing, longer open road stretches, and less power drop when the path tilts up.

Then compare it with other 72V heavy hitters. Some scooters in this group carry even bigger batteries or use full coil or hydraulic shocks. Those models can ride softer off road and push range even higher. Yet they usually add more kilos and can feel more like full e-motos than scooters. The Ultra 2 Upgrade sits in the middle ground. It brings real off road performance and strong range, while still folding and staying just about liftable.

If you want something a bit tamer but still strong, the standard Dualtron Ultra 2 can be a more relaxed fit. The Upgrade version steps things up with the 40 Ah pack and the newer cockpit. So the choice comes down to how much power, range, and tech you want, and how much weight you accept.

Who the Dualtron Ultra 2 Upgrade Is (and Isn’t) For

The Dualtron Ultra 2 Upgrade is not a first step scooter. It is a big jump up from rental models and small commuters. So it suits riders who already feel comfortable at speed and know how to handle hard braking and quick launches.

Here are riders who fit it well:

• People who live near trails, forest roads, or hilly suburbs and want to explore wide areas
• Heavy riders who want strong torque and steady climbing without feeling the scooter struggle
• Owners with safe ground floor storage who plan to replace many car trips with a fast scooter
• Enthusiasts who like tuning settings, changing tires, and treating the scooter as a hobby

Next, here are riders who may want to skip it:

• First time scooter users who still learn balance, braking, and basic handling
• Students and workers who must carry a scooter up and down stairs each day
• People whose rides are short, flat, and stuck at low speed limits
• Riders who face heavy rain and flooded streets on a regular basis

If you match the first group, the Dualtron Ultra 2 Upgrade delivers a rare mix of power, range, and tough hardware that can keep you smiling for years. If you fall into the second group, a lighter commuter scooter or a full e-motorbike will likely make more sense in daily life.

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