The HappyRun G100 Pro 6000W Electric Bike (also called the Tank G100 Pro) is a high-power, full-suspension, dual-battery e-moto style bike built for riders who want motorcycle-like performance in an electric-bike package. It combines a 3000W rear hub motor (6000W peak) with a 72V 33Ah dual battery system (72V 18Ah + 15Ah), hydraulic brakes, 20″ x 4″ fat tires, and a claimed top speed up to 50 mph with a range up to 78 miles per charge.
Make no mistake: this is not a casual commuter. With 159 lb curb weight, 400 lb payload, and full moto-style suspension, the G100 Pro is clearly aimed at experienced riders who understand high speeds, long travel, and the legal gray areas of Class 4–5 ebikes.
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👉 See the official HappyRun G100 Pro 6000W Dual Battery Electric Bike here.
TL;DR – HappyRun G100 Pro at a Glance
| Category | Details |
|---|---|
| Bike Type | High-power, e-moto style fat-tire ebike (off-road / Class 4–5 style performance) |
| Motor | 3000W rear hub motor, 6000W peak |
| Battery | 72V 33Ah dual battery (72V 18Ah top + 15Ah bottom), ≈2376Wh total |
| Top Speed | Up to 50 mph (multi-speed levels 1–5) |
| Claimed Range | Up to 78 miles per charge (brand spec) |
| Realistic Range | Roughly 40–60+ miles with mixed PAS and moderate speeds; 40–60 miles at ~28 mph throttle-only per third-party data |
| Tires | 20″ x 4.0″ premium road fat tires |
| Suspension | Full suspension with upgraded adjustable aluminum alloy front fork |
| Brakes | Hydraulic disc brakes with power-off function; 180 mm front rotor, 203 mm rear rotor |
| Bike Weight | About 159 lb |
| Payload | 400 lb total payload, 33 lb rear rack rating |
| Best For | Experienced riders who want moto-like acceleration, top speed, and off-road capability |
👉 Check current specs, color options, and details for the G100 Pro here.
Key Specs: HappyRun G100 Pro Technical Overview
Based directly on HappyRun’s Tank G100 Pro tech sheet and supporting dealer listings.
| Spec Category | G100 Pro Details |
|---|---|
| Model | Tank G100 Pro / HappyRun G100 Pro 6000W Electric Bike |
| Speed Levels | Speeds 1–5, up to 50 mph |
| Claimed Range | Up to 78 miles |
| Motor Rated Power | 3000W rear hub motor |
| Motor Peak Power | 6000W peak motor power |
| Battery (Dual) | 72V 18Ah top battery + 72V 15Ah bottom battery (total 72V 33Ah, ≈2376Wh) |
| Charger | 72V 2A charger, approx 7–8 hours charge time |
| Display | Large LED display + NFC unlocking |
| Throttle | Half-twist throttle |
| Lights | 160-lumen LED headlight, rear tail/brake light (steady/flash), front & rear sequential turn signals |
| Waterproof Rating | IP54 |
| Frame | High-strength carbon steel frame |
| Suspension | Full suspension front and rear |
| Front Fork | Upgraded adjustable aluminum alloy fork |
| Tires | Premium 20″ x 4.0″ fat tires |
| Brakes | Power-off hydraulic disc brakes, 180 mm front rotor / 203 mm rear rotor |
| Bike Weight | 159 lb |
| Payload Capacity | 400 lb total payload |
| Rider Height Range | Recommended 5’3″–6’5″ |
| Seat Height | 32″ |
| Rear Rack Load | 33 lb |
👉 You can confirm these specs on HappyRun’s official G100 Pro product page.
Design & Frame: E-Moto Stance with Full Suspension
The G100 Pro looks and feels more like a compact electric motorcycle than a traditional bicycle.
Key design cues:
- High-strength carbon steel frame designed to handle a 400 lb total payload plus the stress of high speeds and rough surfaces.
- Full suspension layout with an adjustable aluminum alloy front fork and rear suspension system, tuned for off-road and city impacts.
- Long moto-style saddle and upright cockpit for stability when accelerating and braking hard.
- Integrated rear rack with 33 lb rated load for light cargo or a top box.
With 20″ x 4.0″ fat tires, a long wheelbase, and a heavy frame, it’s clearly built for high-speed stability and off-road durability rather than nimble city weaving. If you’re expecting a 55–65 lb commuter, this is something very different.
Motor & Speed: 3000W Rated, 6000W Peak, Up to 50 mph
HappyRun lists the G100 Pro with a 3000W rated rear hub motor and 6000W peak motor power.
Note: one FAQ line on the brand page mentions 4000W peak, but the main tech specs and feature blocks specify 6000W peak, and that’s the figure this review uses for consistency.
Performance highlights:
- Speed levels 1–5 with top speeds roughly up to:
- 13 mph (Level 1)
- 18 mph (Level 2)
- 24 mph (Level 3)
- 28+ mph (Level 4)
- 50 mph (Level 5, off-road mode)
In real riding:
- Levels 1–3 give you more traditional ebike speeds suitable for shared paths and lower-speed zones.
- Level 4 (around 28+ mph) is the sweet spot for fast road commuting, similar to a high-end Class 3 ebike but with far more power in reserve.
- Level 5 (up to 50 mph) is best reserved for open, controlled environments and riders with proper gear and experience.
Because of this performance envelope, you should always check local regulations before unlocking higher-speed modes; in many areas, 50 mph e-moto style bikes are not street-legal as bicycles.
Battery, Range & Charging: 72V 33Ah Dual System
Energy comes from a dual battery setup:
- Top battery: 72V 18Ah
- Bottom battery: 72V 15Ah
Together, they make a 72V 33Ah system, roughly 2376Wh of total capacity.
HappyRun’s main headline claim is:
- Up to 78 miles of range per charge under ideal, mixed-use conditions.
Detailed retailer specs add more context:
- Around 40–60 miles of range in Level 4 (≈28 mph) throttle-only mode.
- Level 5 (50 mph) throttle-only will drain the battery much faster, as expected at those speeds.
Realistically, for most riders:
- Expect 40–60+ miles in a mix of PAS and moderate speeds (e.g., Levels 2–4 with some pedaling on varied terrain).
- If you ride hard in Level 4 throttle-only around 28 mph, 40–60 miles is a reasonable planning number.
- If you spend a lot of time in Level 5 near 50 mph, range will drop substantially below those figures.
Charging:
- The official spec lists a 7–8 hour charge time with the included 72V 2A charger, which is reasonable for a large-capacity 72V system.
👉 You can see HappyRun’s range and dual-battery details for the G100 Pro here.
Ride, Suspension & Handling: 20″ x 4.0″ Fat Tires + Full Suspension
The G100 Pro is built around a full suspension chassis and 20″ x 4.0″ fat tires, designed to soak up speed bumps, potholes, and off-road hits.
Key ride components:
- Full suspensions front and rear, tuned for a heavier, moto-leaning platform.
- Upgraded adjustable aluminum alloy fork, so you can fine-tune front-end feel for your weight and terrain.
- 20″ x 4.0″ premium tires, with enough volume to smooth out rough surfaces and add traction off-road.
On the trail or rough pavement, this layout:
- Keeps the bike planted and stable at higher speeds.
- Helps absorb big hits and chatter that would overwhelm a hardtail or small commuter.
- Gives you enough compliance to ride longer distances without getting hammered by every imperfection.
The tradeoff is that with a 159 lb bike weight and 4″ tires, it won’t feel as flickable as a 55–65 lb commuter bike—but if you’re buying a 6000W “Tank,” agility probably isn’t your top priority.
Brakes, Safety & Controls
Stopping power needs to match the motor, and here the G100 Pro delivers:
- Hydraulic disc brakes with power-off function, so motor power cuts when you pull the levers.
- Large rotors: 180 mm front and 203 mm rear, providing strong braking leverage and better heat management.
Visibility and control details:
- 160-lumen LED headlight for night and dusk riding.
- Rear brake/tail light with steady and flashing modes.
- Sequential front and rear turn signal lights, which you normally see on e-motorcycles more than bicycles.
- Large LED display with NFC unlocking, so you can power and lock the bike with an NFC key/card rather than a traditional ignition.
- IP54 waterproof rating, solid for normal wet-weather use (not submersion or pressure washing).
Given the speeds involved, full-face helmet, gloves, and moto-grade protective gear are strongly recommended when riding this bike in its higher-speed modes.
Weight, Fit & Everyday Practicality
The G100 Pro is listed at 159 lb bike weight, with a 400 lb total payload and 5’3″–6’5″ recommended rider height.
Day-to-day implications:
- You’ll be rolling it almost all the time, not lifting it up stairs.
- For loading into a truck or trailer, a ramp is highly recommended.
- Once moving, the combination of low-slung battery, fat tires, and a long wheelbase makes it feel planted and secure, not skittish.
Fit notes:
- 32″ seat height will feel accessible for most riders between 5’3″–6’5″, especially with that long bench seat.
- The long saddle provides room to shift your weight fore and aft for comfort, control, and different riding positions.
If you’re used to traditional bicycles or lighter 750W ebikes, the G100 Pro will feel much more like a small electric motorcycle in terms of mass and stance.
Pros & Cons
Pros
- 3000W rated / 6000W peak motor with up to 50 mph top speed delivers serious moto-style performance.
- Massive 72V 33Ah dual battery system (≈2376Wh) with realistic 40–60+ miles of range at moderate to high speeds.
- Full suspension and 20″ x 4.0″ fat tires provide stability, comfort, and traction on rough roads and trails.
- Hydraulic disc brakes with 180/203 mm rotors and power cut-off match the performance envelope.
- 400 lb payload capacity plus rear rack (33 lb) supports larger riders and real gear.
- Premium lighting package with headlight, brake/tail light, and sequential turn signals enhances visibility.
- NFC unlocking and large LED display add convenience and a modern feel.
Cons
- At 159 lb, this is far heavier than typical commuter ebikes; it’s not practical for carrying up stairs or frequent trunk loading.
- With speeds up to 50 mph, it may not be street-legal as a bicycle in many regions; you may need to treat it like a moped or motorcycle depending on local laws.
- Single-speed drivetrain means no traditional gearing; you’ll mainly rely on throttle and assist rather than active pedaling at high speed.
- Overkill for short city commutes where 20–28 mph Class 2/3 bikes already perform well.
- Not ideal for beginners; best suited to riders comfortable with high power and speed.
Who the HappyRun G100 Pro Is Best For
The G100 Pro is for riders who:
- Want an e-moto style experience with electric-bike ergonomics and pedals.
- Regularly ride in areas where higher speeds and off-road exploring are realistic and legal.
- Value huge torque, long range at higher speeds, and full suspension comfort.
- Are comfortable handling a 159 lb machine and understand the importance of full protective gear.
- Prefer a platform that can carry a heavier rider plus cargo across rough ground without feeling underbuilt.
If you’ve outgrown standard 750W ebikes and are looking for a next-level electric beast for private property, OHV areas, or appropriate road classifications, the G100 Pro fits that brief.
Who Might Want a Different Bike
You might be happier with something else if:
- You live in a walk-up or small apartment and need a bike you can pick up or store easily—a 50–70 lb commuter or a folding ebike will suit you better.
- Your local laws cap ebikes at 20–28 mph, and you don’t need or want the complexity of a 50 mph capable machine.
- You primarily ride in city traffic and bike lanes where 20–25 mph Class 2/3 speeds already feel fast enough.
- You want an ebike you can pedal like a normal bicycle with multi-speed gearing rather than rely mostly on throttle.
In those cases, a more conventional fat-tire Class 2/3 ebike or a lighter dual-battery commuter is likely a better choice than the G100 Pro.
Final Thoughts: Is the HappyRun G100 Pro a Good Fit?
The HappyRun G100 Pro 6000W Electric Bike is unapologetically extreme: 6000W peak motor, 72V 33Ah dual battery, full suspension, 400 lb payload, and speeds up to 50 mph. It’s built for experienced riders who want an electric machine that genuinely feels like a small motorcycle, not a slightly boosted bicycle.
If you’re looking for a high-power, long-range, e-moto style platform for off-road adventures, wide-open backroads (where legal), or private-property thrills, the G100 Pro absolutely deserves a hard look. Just be sure to pair it with proper riding gear and a clear understanding of your local regulations.
