In this review, we focus on the popular Sur Ron X electric dirt bike. I had a chance to throughly test both a stock Sur Ron Light Bee X model and a tuned version. The tuned version came with an upgraded higher capacity battery and an updated motor controller combined with an improved front end suspension and better tires.
In this complete review you will find:
- Technical specifications
- First impressions of the Sur Ron Light Bee X
- Full test ride results
- Stock versus upgraded comparison
- Pros and cons list
- And lots more!
Sur Ron X is a full electric dirt bike. This popular eBike features a lightweight forged aluminum frame with a powerful 6KW electric motor. Furthermore, a rechargeable and removable Panasonic Lithium ion battery offers few hours of trail riding and charges to full in about three hours.
Let’s get started.
Introduction to Sur Ron X – The Full Electric Dirt Bike
Sur Ron X Techical Details
|Power||3kW, Peak power: 6kW|
|Torque||35.40Nm, measured at motor axle|
|Range||20 to 60 miles per charge|
|Charge||2.5 to 3.5 hours|
|Top Speed||47mph or 73kmh|
|Seat Height||33 to 34″ (84 to 88cm)|
|Tires||Front/Rear 70/100-19 CST|
|Weight||124lbs with stock battery (20lbs)|
Sur Ron X – Chassis
The Sur Ron X is using a pressure forged aluminum chassis with an aluminum alloy swing arm for a lightweight and durable construction. Additionally, the front fork is an inverted with about 8″ of travel. The triple trees are common with many mountain bikes and use a similar axle design.
The owner’s manual explains few of the features well.
Few things to note: The side stand has a kill switch. This prevents the bike from giving power when the side stand is down. A common feature in street bikes and still easy to forget. You also need to wait few seconds when powering on and twisting the throttle to let the computers to run its initial calibration.
Another thing worth mentioning is that the Sur Ron X is equipped with a headlight, a rear light, and a horn, so it can be made street legal with ease.
When you order the Sur Ron X, it comes in a box requiring final assembly.
Unboxing and Assembly
The box includes all tools needed for the assembly with instructions. Additionally, Sur Ron has a great unboxing and assembly video on their website for more details.
Putting the eBike together is a fairly simple process. In case you’re wondering, you really do not need any special skills or tools to finalize the assembly. The package comes with the electric dirt bike mostly assembled and should take less than 30 minutes to finish.
The rear wheel is already installed. Furthermore, the only parts you need to install is the front end with the front wheel, handlebars, forward controls, headlight, and the display. Finally, you need to install the foot pegs and recharge the battery and you are good to go!
The form factor and chassis reminds me more of a mountain bike than a dirt bike. Surprisingly, the front end is identical to a mountain bike and the handlebar feels like in a high-end mountain bike. It’s a good feeling.
The chassis is narrow and lightweight aluminum and it makes the eBike feel overall very light. The Sur Ron X weights around 104lbs without the battery and the stock battery adds another 20lbs, totaling the overall weight to 124lbs.
Forward controls include rear brake level on the left and front brake lever on the right. As a result, both engage a 4-piston disc brake. Other controls include a large speedometer that includes odometer, trip meter, and total distance. You can also toggle the menu to view the current battery charge.
You also have a switch on the left hand side, which works as a power mode selector between ECO and SPORT mode, and a separate horn.
The Sur Ron X comes with a key that powers on the eBike and also is used to lock the replaceable battery in place.
Sur Ron X – Test Results
Riding an eBike is a great experience. I have tested several electric cars, mountain bikes, scooters, and one wheels but this one is by far the most fun I have had with any electric powered vehicle.
Powering on the Sur Ron X is simple. Simply, turn the key on, wait a few seconds for the controller to cycle, and power on. Next, switch the display lights on and you are ready to go.
After getting used to the throttle response and new lever configuration, the first feeling is similar to a trials bike or a mix between a mountain bike and a trials bike. Furthermore, the eBike feels very light, narrow, and very easy to balance with.
The Sur Ron X is easy to control and the motor feels strong enough to easily pull a slow wheelie. During the test, the suspension felt very soft and needed to be tweaked to my weight and riding style. I used the front fork clickers to stiffen both the compression and the rebound until the suspension had enough dampening.
Trail Testing the Sur Ron X
Next, we took the eBikes to a local trail and put them to the test.
The riding reminds me more of mountain bikes than dirt bikes. This is mainly because the handlebars, forward controls, and no sound is very similar to a mountain bike. The overall lightweight and narrow chassis makes the Sur Ron X very nimble and fast.
Cornering, especially maintaining speed throughout the corner, is easy and very predictable, at least in good dry conditions. The stock suspension does feel a little slow or maybe too soft and would benefit from a better suspension setup for more advanced riders.
The throttle response needs improving. There is a noticeable delay or slack on the throttle. When you get on the gas, I am used to an immediate raw power that comes on immediately when using the clutch and flywheel in gas powered dirt bikes.
This is completely different with the stock Sur Ron X. I had to teach myself to get on the gas about 1.5 seconds sooner. The power also comes on slower and is more mellow. It was specifically noticeable when braking hard and getting on the gas. Surprisingly, I almost went over the handlebars the first time I was cornering while waiting for that power to come on and leaning too much forward. This feeling never fully went away and would be the first thing I would fix on the eBike.
Overcoming obstacles, roots, and rocks is easy with Sur Ron X. Basically, after learning how to use the power in combination with the brakes, things got easier. Additionally, using the rear brake with your left hand enables fine tuning the power delivery and helps to increase traction.
Last year, I had a chance to ride behind a skilled eBike rider with a tuned Sur Ron X on a very technical single track. Surprisingly, the Sur Ron was very fast around the slow speed sections and cornering to a point that I really struggled keeping up with him on my gas dirt bike. The only places where I was catching up were high speed straight sections over a grass pastures when the Sur Ron X was limited with its maximum speed.
The top speed of around 47mph is very well adequate for most trail riding. Bypassing the power and top speed is easy by cutting a wire in the controller, however, most beginner riders really would not even need to do that. If you ride single track, top speed should not really matter. Speeds over 50mph rarely happen in most trail riding but more power is always welcome.
Stock Versus Upgraded Model
I also tested the same eBike with few important upgrades. First of all, I like how the Sur Ron X can be upgraded with many aftermarket parts. And that they have opted to use parts from mountain bikes, such as the triple trees, handlebars, and other front fork parts. This makes it easy to configure and upgrade to your liking.
The tuned version had upgraded battery, controller, suspension, and tires.
First of all, the throttle response is where it needs to be. Using the new controller, the throttle response was crisp and had basically no delay. This made riding much more predictable and easier.
The upgraded suspension together with a new trials style tire choice definitely made the Sur Ron X much more fitted to my riding style. The stock front suspension felt too slow to response to some repeated heavy bumps and felt frequently like bottoming out. Basically, this feeling was completely gone with the upgraded suspension and it made the eBike float over any bumps with ease.
All in all, I would like to take the tuned version to some very technical and hard terrain with big climbs to fully test the capability of these electric dirt bikes and how well it would perform without clutch and gears.
Overall the difference is noticeable compared to the stock version and if you are an advanced rider, be prepared to upgrade at least the suspension to enjoy this eBike to the fullest.
Sur Ron X – Test Summary With Pros and Cons
- Top speed
- Parts availability
- Fun factor
- Suspension needs upgrades for advanced riders
- Throttle response needs tweaking (needs a controller or tuner)
- Stock foot pegs are small
- Brakes could be better
Overall, I like the Sur Ron X.
For $4400, this electric dirt bike is impressive. The Sur Ron X battery life, power, range, and handling is up to par, and overall this eBike performs well. It is a great beginner bike as is and with small upgrades a great bike for all riders.
The Sur Ron X is an exciting electric dirt bike. Additionally, the silent operation enables hitting nearby dirt trails that are usually not accessible to gas operated dirt bikes. As a result, this eBike is a great choice for all beginner riders wanting to get into dirt riding and a great eBike to build on for advanced riders.
Overall, we like the performance of the Sur Ron X. We like the accessibility to aftermarket parts and the upgradeability makes this eBike last for years to come as you improve. Generally speaking, advanced riders will want to upgrade suspension and tune the motor to their liking, which is easy thanks to several options out on the market.
Next, read our in-depth guide to electric dirt bikes.
My next dirt bike might definitely be electric.
Last updated: September 27th, 2022.