HappyRun G300 Pro: A Pedal-Equipped Dirt Bike That Feels a Little Too Real
April 10, 2025
HappyRun was new to me, but the G300 Pro jumped off the page as soon as I saw it. It’s advertised as an electric dirt bike, and the look backs that up: 17-inch knobbies, full suspension, moto-style plastics, a big headlight, and that “this is not a normal ebike” silhouette.
The twist is that it has pedals.
So I built it, made a couple of quick comfort/control swaps, and rode it everywhere I realistically would: neighborhood streets, bike-path pace sections, some faster road pulls, and off-road grass/trail riding. Here’s how it felt in the real world.
Installation and setup
It arrived freight, and that should tell you a lot right away. This isn’t a “carry it up the stairs” ebike.
Assembly was straightforward for this category. I installed the front wheel, pedals, rear shock, front fender, and handlebars.
Before my first real ride, I made a few plug-and-play changes that didn’t transform the bike’s character, but did make it feel more natural in my hands:
Swapped the stock half-twist throttle to a full-twist throttle (standard 3-pin Higgo-style connector)
Swapped the adjustable stem setup for a direct stem and riser bars (I don’t love adjustable stems on bikes like this because they tend to move)
Flipped the brake lever layout to moto style (rear brake on the left, front on the right)
One key quirk: the bike boots into a park mode where the throttle won’t respond until you squeeze a brake lever. Because of that, I kept at least one brake sensor connected so I could reliably get into the ride modes.
Design vibes: it looks like trouble (in a good way)
Aesthetically, the G300 Pro leans hard into Surron-adjacent territory. The seat and fenders are very much that style, and the whole bike reads “small electric moto” way more than “bicycle.”
The headlight is extremely bright, and the rear light includes turn signals. There’s also a license plate bracket back there, which adds to the “street-ish” impression.
Even with pedals, expect attention.
Weight: planted on dirt, annoying everywhere else
I weighed it at 136.8 lb. In motion, that weight has a couple of personalities:
Off-road, it helps the bike feel planted and stable when you’re pushing into uneven ground
Around the garage, or when you’re trying to reposition it without power, it’s a workout
For transport, you’re planning around it (ramp life, not “lift it into the trunk” life)
If you don’t have an easy storage/parking situation, the weight alone can be the deciding factor.
The ride feel: “Surron with pedals”… and a spicy tune
Once I got rolling, the main takeaway was simple: this thing feels like a proper electric dirt bike.
Power comes on strong. Very strong.
There are multiple assist/power levels, but the biggest personality trait isn’t top speed—it’s the low-end hit. The controller tune feels aggressive right off the line, and the difference between small throttle and bigger throttle is not as nuanced as I’d like at low speeds.
When I’m riding faster—say, 30 mph and up—the bike feels more settled and predictable. That pace is where it starts to make the most sense on pavement.
At slower speeds, especially in “be polite on the path” situations, the combination of weight plus punchy low-end response makes it harder to ride casually.
Pedal assist: more “activation” than actual pedaling
Yes, it has pedals. No, I wouldn’t buy it because I want to pedal.
Pedal assist behavior felt more like an on/off cadence activation than a natural, torque-sensing ebike experience. It kicks in quickly once you start turning the cranks, but it doesn’t have the smooth, proportional feel you’d expect from a bicycle-style pedal assist.
And at speed, it turns into ghost pedaling anyway.
Practical takeaway: I treated the pedals more like a way to satisfy certain “ebike” expectations and to help with body positioning, not as a meaningful propulsion method.
Brakes and control
The brakes are generic-feeling on paper, but in practice they did better than I expected for the weight and speed potential here. I still wouldn’t call them premium, but I also didn’t feel like I had a “no brakes” moment.
The bigger issue for control was the initial torque hit. It makes the bike a blast off-road and for hill pulls, but it’s not the kind of tune I’d hand to a beginner and say “you’ll be fine.”
Off-road is where it clicks
The best version of the G300 Pro is pointed at dirt, grass, and uneven terrain.
The suspension is legitimately enjoyable for this class. I rode it over bumpy grass, small humps, and up steep inclines, and it stayed composed enough that I could focus on line choice and throttle control instead of hanging on for dear life.
Hill climbs were effortless. The torque is there.
If your main goal is off-road fun—especially if you like the idea of a quieter hub-motor setup—this is where the bike starts to feel like a great value.
Speed reality check
On-road, it’ll run with traffic. The display indicated ~50 mph in my pulls, and GPS testing landed closer to the mid-to-high 40s on flat.
What mattered more than the number was stability: it didn’t feel wobbly when I was pushing it, and it had a “sweet spot” where the chassis felt happiest at speed.
Quiet hub motor, big presence
The hub motor setup is noticeably quieter than many mid-drive-style high-power builds. If you put street tires on this bike, it could become surprisingly stealthy in sound.
Visually, though? Not stealth.
It looks like a dirt bike because it basically is one.
Legal and lifestyle reality
Even though it has pedals, I’d consider this a legal gray-area machine in a lot of places.
If you ride it like a bicycle in bike lanes or on multi-use paths, you’re likely to get looks (and depending on your area, attention you don’t want). If you’re buying this, I’d strongly recommend checking local rules and being honest with yourself about where you actually plan to ride.
What We Like
Real dirt-bike vibe with pedals: it genuinely feels like a “Surron with pedals”
Off-road stability: the weight helps it stay planted when terrain gets rough
Suspension is fun and capable for grass/trails and moderate bumps
Strong torque for hill climbs and off-road punch
Hub motor is relatively quiet and low-maintenance feeling
Bright headlight and integrated lighting/turn signals are a nice touch
Things To Consider
Heavy at 136.8 lb: storage and transport take planning
Low-end power delivery is aggressive: fun, but not beginner-friendly
Pedal assist feels more like cadence activation than natural bike-style assist
Coasting feel is odd: it slows quickly when you stop pedaling/throttling, which I didn’t love
Legal gray area: it may not fly as a typical “ebike” depending on where you live
I’d love easier access to controller tuning so owners can smooth out the low-end behavior
Final Thoughts
The HappyRun G300 Pro has a ton of potential because the fundamentals are there: strong 72V power, a planted chassis, and a suspension setup that makes off-road riding genuinely enjoyable.
If you want a high-power machine that feels more moto than mountain bike—and your riding is mostly off-road or on roads where keeping up with traffic matters—this bike makes a strong case.
If your dream is a chill, bicycle-like experience with smooth pedal assist and easy path etiquette, this isn’t that. The tune is spicy down low, the bike is heavy, and the whole package feels like it’s constantly reminding everyone (including you) that it’s basically an electric dirt bike with pedals attached.
Links
HappyRun G300 Pro (promo code: RunPlayBack): https://happyrunsports.com/products/happyrun-electric-dirt-bike-g300-pro?ref=jqykatyw
Full Twist Throttle: https://amzn.to/3R8diKS
Moto Grips: https://amzn.to/4inxlAl
Stem Mount: https://amzn.to/42jr963
Riser Handlebars: https://amzn.to/4lyZgQy
Bar End Mirror: https://amzn.to/4gGIqML
MTB Pedals: https://amzn.to/3C8pUxw
CamelBak MULE Hydration Backpack: https://amzn.to/3V2tMqb
Bell Super 3R MIPS Bike Helmet: https://amzn.to/3TJ1vTR
Fox Racing Bike Gloves: https://amzn.to/40P5SyQ
Fox Racing Hip Bag: https://amzn.to/3xmW4mT
Hafny Handlebar Bike Mirror: https://amzn.to/3FVubmN
Veeape Electric Air Pump: https://amzn.to/3LPLTf9
Denlix Military Sling Bag: https://amzn.to/3LTKN2c
Lamicall Bike Phone Mount: https://amzn.to/3LXmD6O
Onvian Wireless Bike Alarm: https://amzn.to/42KUgyE
RunPlayBack Merch: http://shop.runplayback.com/