Today we’re reviewing the Sur Ron X, an electric dirt bike with a top speed of 48mph,
an advertised range of 40 miles, full suspension and 19” dirt wheels. In a previous video,
we reviewed the Segway X160, the smaller and less powerful version of the Sur Ron. We’ll
be taking a look at the latest 2020 version, to figure out if this is the best electric dirt you can buy
The Sur Ron can be bought from LunaCycles.com, and they are the exclusive seller for it in
North America. We bought our Sur Ron locally fully assembled. But when you buy it new,
there is some assembly required.
The Sur Ron is the closest affordable replacement to a gas dirt bike around. We actually think
this can be better than owning a traditional dirt bike for some people. The Sur Ron is
lightweight at 100lbs, zero emissions and nearly silent. The power to weight ratio is
amazing, allowing you to easily maneuver the bike and hit features you normally wouldn’t
feel confident riding. The bike doesn’t get hot, and there’s little to no maintenance
with the electric motor. It’s also much easier to load into a car or truck and you
can lay it flat since there’s no gas or oil to worry about.
Looking at the specs, the Sur Ron has an exposed aluminum frame, with no body panels. It has
a 40” height, with 10.6” of ground clearance.
The battery is a gigantic 60 volt 32amp pack which puts out a peak of 7,000 watts of power.
The battery is housed in the middle of the bike, under a locked compartment at a weight
of 20 lbs and can quickly be swapped.
The motor is direct drive with a chain and large 42 tooth sprocket, which helps create
18 foot pounds of torque with a single speed powertrain. The exact numbers of horsepower
and torque do vary based on how you calculate them, but it performs similar to a 125cc gas bike
We love the acceleration and speed of this bike and were pretty blown away with how well
it handles in the dirt and sand. We were equally impressed with how fast it slowed down, thanks
to its front and rear 4-piston hydraulic disc brakes. It also has regenerative braking,
which will slow you down using the motors while putting power back into the battery.
While the Sur Ron doesn’t have an app or bluetooth connectivity, it does come with
an included dongle that hooks up between the bike harness and the battery in order to program
the re-gen levels. Using the handlebar as a toggle switch, you can change between 3
settings of regen, or you can turn it off completely.
For lights, the Sur Ron has a Dual LED front headlight which is very bright along with
a rear tail light. However, the tail light stays illuminated and does not light up when
you brake. There is also no toggle switch for the lights, so they are always on and you can't turn them off.
On the left hand side of the handlebar is the digital display, which will display your
speed in the middle, and the trip odometer in the bottom right, which you can reset with the small button
There’s a toggle switch between sport and EP mode, which turns down the throttle and
top speed in case you want to save battery.
Looking at the suspension, it features a DMN Volcano dual crown fork, and a rear coil with
8 inches of travel. You can also adjust the preload and rebound, and the stock suspension
is surprisingly good and handled everything we put it through. You also have the option
of upgrading the suspension of the Sur Ron, since it’s the same as mountain bikes.
Riding the Sur Ron off-road is a blast, especially how it compared to the Segway X160 we reviewed in a previous video
We also rode with a crf250L - obviously the Sur Ron got dusted on the straight away, but
it held its own on the trails and was way more agile. But in a drag race, the initial
torque from the electric motor is so impressive, just watch how it even gets the jump off the
line next to a KLR650 and the Segway x160.
Looking at the range, Sur Ron advertises a range of up to 40 miles, but it’s dependent
on how you ride, the weight, and the type of terrain you ride on. Typically, a dirt
bike range is measured in the number of hours they can be ridden off-road. We put it to
the test, riding on a long dirt path in sport mode going between 30-45mph the entire time.
We also stopped into a sand pit to do some riding for 15 minutes. By the end of the ride,
we had done 23 miles and 2 hours of riding and the battery was down to 10%, which causes
it to go into eco mode. If you’re looking to get the advertised 40 miles of range, you
would have to ride a little slower and less aggressive.
For upgrades, the bike is easy to customize and there are plenty of options. When it ships
from LunaCycles, it’s the matte grey frame that comes with green stickers that you can apply
We also recommend right away upgrading to the shimano Saint brake pads. Our stock pads
were squeaking and we noticed an improvement in brake fade and stopping power with the Shimano
We also upgraded to 3” Aluminum Pro Taper handlebars which really improved handling
and comfortably on the trails.
The Sur Ron features a cable throttle, which does the trick but we did notice it starting
to stick, and we did upgrade ours to a ¼ turn electronic throttle from Magura.
We also replaced our tires to Dunlop Geomax MX33 tires since our stock ones wore down
quickly, especially the rear.
There’s plenty of other mods out there for the Sur Ron, including larger battery upgrades,
Super Moto street wheels, or swapping out the chain with a belt.
We’ll leave links in the description of the video to all the different upgrades we showed and others
Alright, that’s it for now. Next up, be sure to watch our review of the Segway X160
and the comparison against the Sur Ron and the Super 73.