HappyRun G50 Electric Bike
The HappyRun G50 is a 20″×4″ fat-tire electric bike built for city commuting and all-terrain weekends — a retro motorcycle-styled e-bike with a removable 48V battery, dual suspension and a Shimano 7-speed drivetrain. Below you’ll find the full specs, an honest look at how it rides, where to buy it today, and the genuine G50 / G60 parts we stock.
Buy the G50 on Amazon Shop the G60 in our store
HappyRun G50 Key Specs
| Spec | HappyRun G50 |
| Motor | 750W brushless hub motor — 1500W peak output |
| Battery | 48V 18Ah removable lithium-ion |
| Max range | Up to 68 miles in pedal-assist mode |
| Top speed | Up to 20 mph (UL-compliant configuration) |
| Tires | 20″ × 4.0″ puncture-resistant fat tires |
| Drivetrain | Shimano 7-speed |
| Suspension | Dual — front fork + seat-post shock |
| Brakes | Front and rear disc brakes |
| Frame | Chromoly steel |
| Riding modes | Pure electric · Pedal assist · Normal bike |
| Payload capacity | 265 lbs |
| Recommended rider height | 5′5″ – 6′5″ |
| Display | LCD digital display |
| Safety certification | UL 2849 certified electrical system |
| Assembly | Arrives ~90% pre-assembled (front wheel + handlebar) |
| In the box | Battery, charger, LED headlight & taillight, fenders, tool kit, pump, manual |
Specs reflect the official HappyRun G50 listing. Always confirm against your owner’s manual before buying replacement parts.
What the G50 Is Like to Ride
Power & hill climbing
The G50’s 750W motor delivers 1500W at peak, which you feel most on standing starts and steep inclines. Where a 350–500W commuter e-bike makes you work on a 10% grade, the G50 holds speed and keeps pedalling optional. With 7 speeds backing it up, you stay in control on the way down too.
Battery life & charging
The removable 48V 18Ah pack is rated for up to 68 miles with pedal assist. In practice, expect less if you ride mostly in pure-electric mode, on soft ground, or in cold weather — and more if you pedal along. Because the battery is removable and lockable, apartment riders can charge it indoors without hauling the whole bike upstairs.
Comfort & all-terrain grip
The 20″×4″ fat tires are the G50’s defining feature. Wide tires run at lower pressure, so they absorb chatter and float over surfaces that would stop a narrow tire — gravel, sand, snow, wet pavement. Add dual suspension (front fork plus seat-post shock) and broken city streets become noticeably less punishing.
Everyday commuting
Three riding modes let you tune the effort: pure electric for arriving fresh, pedal assist for range and exercise, and normal bike mode for when you want the workout. The integrated LED headlight and taillight mean you’re visible after dark without clipping on extra lights. Note that at roughly 95 lbs, this is a heavy bike — excellent on the road, but plan ahead if you need to carry it up stairs.
G50 Pros & Cons
| What we like | What to keep in mind |
|
|
Where to Buy the HappyRun G50
The G50 is sold through Amazon, not through this store. We’d rather say so plainly than send you hunting. You can check current pricing and availability here:
If you’d rather buy direct from us — with our own shipping, warranty handling and customer support — the HappyRun G60 and G60 Pro are the current models we stock, and both share parts compatibility with the G50.
G50 vs G60 vs G60 Pro: Which One?
| Model | G50 | G60 | G60 Pro |
| Motor | 750W (1500W peak) | 500W (1500W peak) | 750W (2000W peak) |
| Battery | 48V 18Ah | 48V 13Ah | 48V 18.2Ah |
| Max range | Up to 68 mi | Up to 68 mi | Up to 70+ mi |
| Top speed | Up to 20 mph | Up to 20 mph | Up to 20 mph |
| Tires | 20″×4″ | 20″×4″ | 20″×4″ |
| Brakes | Dual disc | Hydraulic disc | Hydraulic disc, 160mm rotors |
| Payload | 265 lbs | 330 lbs | 330 lbs |
| Certification | UL 2849 | UL 2849 | UL 2849 |
| Price | On Amazon | $599 | $899 |
| Sold here | No — Amazon only | Yes | Yes |
All three models are capped at 20 mph in their UL-compliant configuration, so top speed isn’t the deciding factor — the differences that matter are motor output, battery capacity, payload rating, and whether you can buy it direct from us.
Our recommendation
- Want the most power and range per dollar? The G50 on Amazon is hard to beat — just note it isn’t sold through this store.
- Want to buy direct with our support? The G60 at $599 is the value pick, and it carries a higher 330 lbs payload.
- Riding rough ground or want the strongest build? The G60 Pro at $899 adds a 2000W peak motor, NFC unlocking and hydraulic brakes.
- Buying for two? The Tank G60 combo bundles a pair at a lower per-bike price.
Genuine G50 & G60 Parts & Accessories
Own a G50 or G60? These are the genuine HappyRun replacement parts we stock — same components as the original build, so fitment is correct and your warranty stays intact. Batteries, tires and motors are the three most-requested items.
 48V Replacement Battery for G50 / G60 $349.00 Shop now → |
 Replacement Motor for G50 / G60 $199.00 Shop now → |
 Rear Cargo Rack for G50 / G60 $79.90 Shop now → |
 20″×4″ Replacement Fat Tire $85.90 Shop now → |
 Replacement Inner Tube for G50 / G60 $49.90 Shop now → |
 Front Fender for G50 / G60 $49.00 Shop now → |
 Waterproof E-Bike Cover $39.00 Shop now → |
 Aluminum Alloy Kickstand $29.00 Shop now → |
Need help finding a part? If the component you need isn’t listed here, our team can confirm fitment for your specific model and year. Contact HappyRun support → |
All parts above are compatible with the HappyRun G50 and G60. The kickstand also fits the G100. Prices are shown in USD and may change during promotions.
HappyRun G50 FAQ
Is the HappyRun G50 still available?
Yes, but the G50 is sold through Amazon rather than through this store. Current G50 models available for direct purchase here are the G60 and G60 Pro.
Where can I buy the HappyRun G50?
On Amazon, sold by HappyRun Direct. Buying direct from happyrunsports.com is currently limited to the G60, G60 Pro and bundled combos — those orders are handled by our own support and warranty team.
How fast does the G50 go?
The UL-certified G50 is rated for a top speed of 20 mph — the same as the G60 and G60 Pro. That keeps it within mainstream US e-bike class limits for on-road use, and it is the figure we publish for the G50 sold through official channels. Actual speed varies with rider and cargo weight, terrain, battery level and tire pressure.
How far can the G50 go on one charge?
Up to 68 miles in pedal-assist mode under ideal conditions. Real-world range drops with higher speeds, rider and cargo weight, hills, soft terrain, cold temperatures and headwinds. Riders using mostly pure-electric throttle should expect noticeably less.
Is the G50 good for beginners?
Yes. It arrives roughly 90% assembled, offers three riding modes so you can ease in with pedal assist, and the fat tires are far more forgiving than narrow ones. The main things to get used to are the weight and the initial brake adjustment.
Does the G50 come with a rear rack?
No, the G50 ships without a rear rack. The genuine rear cargo rack for G50 / G60 is available separately and bolts straight onto the existing mounts.
Are G50 and G60 parts interchangeable?
Many wear items are shared — including the 48V battery, motor, tires, inner tubes, fenders and rear rack. Because there are G50 variants, confirm your model and year with our support team before ordering electrical components.
Is the G50 UL certified?
Yes. The G50 carries UL 2849 certification, which covers the complete electrical system — battery, motor, controller and charger — for fire and electrical safety.
What warranty does the G50 have?
One year against manufacturer defects. Orders placed through happyrunsports.com are serviced directly by our support team — see our warranty policy for details.
HappyRun builds fat-tire electric bikes for riders who want more range, more grip and less hassle. Questions about the G50 or picking between the G50, G60 and G60 Pro? Talk to our team — we answer within 24 hours.