This is the 2021 SUPER73 ZX which is SUPER73’s newest electric bike. Now if you’ve not heard of Super73 before, I hadn’t until last year, let me show you why I think this bike is going to be the Tesla for electric bikes.

This bike is packed with features and it’s a notable improvement over the previous Z model. So I’ll get this unboxed, show you what this bike is like on the road, and go over the features I love and what it’s lacking too.

Unboxing / Setup

Ok, let’s get this bike setup. So inside the box it comes with a removable battery, a box of accessories including reflectors and lights, plus the power brick that we’ll use for charging the bike.

Then there’s the partly assembled bike, which for 30KG is pretty heavy if you’re lifting it out from the top.

Once it’s out though, you’ll see how well packed and secured it is. Loads of padding to remove and cut off. Then once all of that has been removed, there’s only a few things to do to get it up and running.

First the handle bars need to be fitted, then the pedals need to be screwed on. If you’ve got the EU model it’ll have a front light to fit too. Then pump the tyres up, charge the battery up and it’s good to go. The first charge will take about 6-7 hours, but after that it should only take a few hours.

Look around


So the ZX is a refresh or an updated design of the ZG and Z1 which is the cheapest model in the range. But I absolutely love the look of this bike, it’s got this nice street bike, BMX vibe going on.

The dark frame with the dark seat and wheels, plus the minimal branding throughout looks so nice. In fact I think it’s the best looking bike they do. It’s got the Super73 logo in a handful of places, like on the front of the bike, on the tyre walls, the alloys themselve plus a few other places. But the branding I really like is the cut out on the bike frame. This is such a nice design and makes it look aggressive.

The frame is an aluminium alloy frame which makes it a lot lighter than the steel frame they used on the ZG, although the bike overall is heavier. The ZX weighs 30KG compared to 25KG of the ZG, but it is bigger.

The wheels are 20” alloys, and as you can see they are wrapped in some really wide tyres. These tyres are proper meaty looking but are useful for both on and off road. It’s not noticeable but the rear tyre is slightly wider than the front, coming in at 4.5 inch on the front and 5 inches on the back. One small feature I love here are the angled valves, such a great idea.

The EU model also comes with mudguards, which on the ZG you’d normally buy separately. It’s got the front guard which you need to fit yourself, plus the centre and the rear which are preinstalled. Obviously they are practical, but I think they look awesome as well.

So as it’s a pushbike, it still has the usual features you’d expect to see on a bike. Things like the pedals, a kickstand and the chain. It’s also got a 10 gear setup, so although you might use the throttle if you’re in the US, you’ve still got the option to use the 10 gears and use it like a normal bike. Plus if you’re using it in the Pedal Assist mode, changing the gears helps a lot. The gears are up front on the right bar. I much prefer this to the single gear setup on the ZG.

Looking at the handlebars, the rubber grips are great. They feel nice to the touch and are actually really grippy.

The brakes also have the same rubber texture on them, which is a nice feature. The left lever controls the front brake and the right does the rear. The brakes are mechanical 180mm rotors, they seem decent to me, although I’ve already seen people replacing them for better ones.

On the handlebars there’s this mini LCD display which basically controls all of the settings on the bike. The button on the right let’s you flick between the different modes, which is your current speed in either miles or kilometers per hour. Your remaining battery range. The power mode you’re in, between 0 and 4. And total, which is the total miles the bike has done since new. I’m up to 35 miles now.

Now if you press and hold the UP button, it will turn the lights on. I actually really like this feature as with the ZG the lights aren’t wired in, so you need to turn them on individually.

The new seat is really comfy and super soft to the touch, and like before you could seat two people on this, although it might be a squeeze.

Using it

So once it’s charged up and you’re ready to go, you just need to press the power button on the side of the battery, and within about 5 seconds the display will come on and you’re good to go. Choose the power mode, in my case I usually set it to 4, and start pedalling.

I’m in the UK so I’ve got the EU model, which is unfortunately limited compared to the US model. Now the motor is capable of 1,350w peak power, but we’re actually restricted to 250w unless you use the app to remove that restriction, I’ll cover that later.

You can hear the motor when it kicks in, there’s no denying it sounds like an electric bike, but I don’t mind the sound of it at all:


Also due to EU laws we cannot have a throttle for road use in the UK. This means as you pedal the motor will kick in and assist you up to 25kmh or 15.5mph. Depending on which mode you’re in, it feels pretty torquey though. If I set it to mode 4 and gently pedal the bike will just pick up and reach its top speed quite quickly. Obviously if you’re in the US you can fit a throttle and use that instead.

So I’m up to about 30 miles on this and I’ve only charged it once when I first got it and it’s still showing a remaining range of 10 miles. That’s not bad considering it’s rated at 40-80km range per charge, which is around 25-50 miles.

Obviously if I did run out of battery I’d just pedal home, as it’s a normal 10 gear speed bike.

While out and about though, it feels really nice to ride, for me it’s the perfect ride height and handlebar height. Although there’s no suspension on this model, the big tyres and soft seat makes it a firm but comfy ride. The seat and handlebars cannot be adjusted in terms of height, but the handlebars can be tilted.

I’ve had a lot of people comment about this bike, some thought it was an electric motorbike due to the tyres on it. Generally speaking people are intrigued by it, it actually reminds me when I got my Model 3 in 2019, people just wanted to know how far you could travel on it, how fast it goes and so on.

The ZX has a 79cm seat height and is aimed at riders between 1.5m and 2m tall, so 5ft to 6ft 5. This should cater for most riders within this range. There is a weight limit for the rider of 150kg or 23stone.

Super73 App

What’s great about the ZX is, it’s also a smart bike with app control. So by installing the Super73 app you’re able to check the battery, speed, range, turn the lights on and use it as a sat nav. If you drop a pin where you want to navigate to it will work just like a normal sat nav showing trip duration and ETA, but it will also send the turn by turn directions to the little LCD display. Which means if you don’t have your phone mounted on the bike, you can still see where you’re going.

Then if you want to install a throttle or max the power out on this, you can change that in the app too. By default it’s set to mode 1 which is the legal limit in the UK, but if you enable mode 4 it will easily do 30 miles an hour, or so I’ve heard. Just remember it’s not legal so be careful where you use it.

The app also allows the bike to receive over the air updates, so any bugs or fixes Super73 can send those out remotely.

Power / Battery / Charging / Range

The battery is hidden under the seat, it’s a 615 watt hour battery and it’s removable. So if you want to charge it while it’s attached to the bike you can, but you can also unlock it using the provided keys and take it inside. The power brick doesn’t come with a UK plug, so you’ll need to buy one for about £7.

I estimate it’ll cost around 10p to charge from empty to full during the day, or 3p overnight, that’s based on the 615 watt hour battery on my Octopus Energy tariff.

You can check the battery status by pressing the small button in the side, it’ll show these little LED lights.


You might be wondering how much the ZX costs, well it’s listed on the EU website at €2,499 including delivery to the UK, which cost me about £2,100. At the current exchange rate that would be $2,850, but if you buy it from the US website it’s $1,995.

I pre-ordered it back in June as soon as they announced it, but once dispatched it was here within about 10 days. Now I’ve bought two bikes from them, and both had the wrong address on the delivery. No idea if this is a courier or Super73 issue, but thought I’d mention it in case anyone else has the same.

Worth it?

So ultimately is it worth £2,000? I mean that’s a lot of money to spend on a pushbike, but then it’s a quality bike, it’s quick, it’s got some nice app features, it looks awesome and it’s got a pretty decent range. For me it’s worth it and over the last few weeks I’ve been using this bike more than my car for riding down to the shops or to the bakery.

So if you’re in the market for a new electric bike, I think the Super73 ZX hits the sweet spot, I’d recommend it to anyone.