If you’ve been scrolling through electric dirt bike listings and stumbled upon the GT73 Pro, you’ve probably seen bold claims: “60V system,” “3000W motor,” “50 mph top speed,” and “off-road beast”—all for under $2,000. Sounds too good to be true? You’re not alone.
In this in-depth, real-world review, we put the GT73 Pro through rigorous testing—acceleration, top speed, hill climbing, braking, ergonomics, and range—to separate marketing fluff from actual performance. Spoiler: It’s not hitting 50 mph, and it won’t conquer steep hills. But that doesn’t mean it’s a bad bike.
Let’s dive into what the GT73 Pro actually delivers—and who it’s really for.
Key Specs at a Glance
Before we get into the nitty-gritty, here’s a quick overview of the GT73 Pro’s advertised specs:
- Motor: 3000W direct-drive hub motor (nominal)
- Battery: Dual 60V 18Ah packs (36Ah total, 2160Wh)
- Claimed Top Speed: 50 mph
- Weight: ~120 lbs (estimated)
- Tires: Dual 19-inch knobby off-road tires
- Brakes: Dual-piston hydraulic disc brakes (203mm rotors front & rear)
- Suspension: Adjustable front forks + dual rear shocks (coil + air)
- Price: ~$1,999
Now, let’s see how these specs hold up in the real world.
Top Speed Test: 50 MPH? Not Even Close
One of the biggest red flags in the GT73 Pro’s marketing is its claimed 50 mph top speed. During our testing on a fully charged battery in Turbo mode, the bike maxed out at just 38 mph—and even that required a long, flat stretch and full throttle for over 3 minutes.
“I hit 36 mph consistently. Briefly touched 38. But 50? Only if the rear wheel is off the ground.”
And that’s the key insight: The 50 mph figure is a ‘free-spin’ speed—meaning it’s measured with the wheel elevated, no rider weight, and no wind resistance. In real-world conditions with a rider (even a lightweight one), expect 33–38 mph.
For context:
- A true 60V/3000W electric dirt bike (like the Surron Light Bee X) hits 45–50 mph with ease.
- The GT73 Pro performs more like a 48V or 52V mid-tier e-bike, not a high-voltage powerhouse.
Verdict: Don’t buy this bike expecting 50 mph performance. It’s underpowered for its voltage class.
Acceleration & Power Delivery: Smooth But Not Thrilling
The GT73 Pro uses a direct-drive hub motor, which means:
- ✅ Higher efficiency and longer lifespan (no internal gears to wear out)
- ❌ Lower torque off the line compared to geared or mid-drive motors
From a dead stop, acceleration feels decent—not sluggish, but not explosive. You won’t be doing wheelies or launching like a Surron, but it’s enough to merge into traffic or cruise suburban streets confidently.
“It’s not slow… but it’s no Surron. Think ‘capable commuter,’ not ‘dirt track racer.’”
The throttle response is immediate—no lag or delay—which is great for trail riding or quick maneuvers. However, power tapers significantly after 30 mph, making highway riding impractical (and illegal, as we’ll discuss).
Hill Climbing Test: Where the GT73 Pro Falls Short
We tested the GT73 Pro on a steep 40-foot off-road hill—a benchmark many electric dirt bikes struggle with.
Result?
The bike stalled halfway up. Even with full throttle in Turbo mode, it couldn’t crest the incline without manual assistance (i.e., pushing with a foot).
Compare that to the Ridstar Q20 Pro (a similarly priced dual-motor bike), which “smoked” the same hill effortlessly.
Why the struggle?
- Hub motors lack low-end torque—critical for climbing.
- The 3000W rating may be nominal, not peak. Real-world output appears closer to 2000–2500W.
- Single-motor design can’t match dual-motor traction or power.
Who should avoid this bike?
If you live in San Francisco, Seattle, or any hilly area, the GT73 Pro won’t cut it for off-road or steep commutes.
Ideal terrain: Flat dirt trails, fire roads, or urban commuting on level ground.
Braking Performance: Surprisingly Strong
Despite its budget price, the GT73 Pro comes with dual-piston hydraulic disc brakes and massive 203mm rotors front and rear—a spec usually reserved for premium models.
In our 25 mph emergency stop test, the brakes locked the wheels cleanly with progressive, predictable feel. No fade, no sponginess.
“Brakes are more than sufficient. Beefy rotors + solid calipers = confidence on descents.”
While they’re not 4-piston race-grade, they’re perfectly adequate for a bike topping out at 38 mph. Safety-wise, this is a major win for the GT73 Pro.
Range Estimate: 35–40 Miles in Real Conditions
With a 36Ah (2160Wh) battery pack, the GT73 Pro promises serious range. In Turbo mode (full throttle), we estimate:
- 35–40 miles of mixed riding (stop-and-go, light hills, flat terrain)
- 50+ miles in Eco or Standard mode
That’s excellent range for a sub-$2K electric dirt bike. For daily commuters within a 20-mile radius, this bike can easily handle round-trip rides with charge to spare.
Charging: Comes with two 3A chargers (one per battery). Full charge time: ~6 hours.
Suspension & Off-Road Capability: Comfort Over Aggression
The GT73 Pro features:
- Adjustable front forks (compression damping only—no preload)
- Dual rear shocks: One coil (stock), one air (included)
Important note: The stock coil shock bottoms out instantly, even under a 160-lb rider. Swap to the air shock immediately—it offers better support, tunability, and comfort.
On flat dirt trails, the suspension performs admirably:
- Absorbs roots, rocks, and bumps smoothly
- Knobby 19-inch tires provide excellent traction
- MX-style seat allows fore-aft movement for balance
However, don’t expect motocross-level performance. This is a trail cruiser, not a jump bike. Avoid drops, big hits, or aggressive terrain.
Ergonomics & Comfort: Built for All-Day Riding
Despite its dirt bike stance, the GT73 Pro is surprisingly comfortable:
- Seat height: ~32–33 inches (flat-footable for riders 5'8"+)
- Handlebars: 3-inch rise, neutral sweep—reduces wrist strain
- Footpeg position: Natural MX stance, not cramped
- Seat cushioning: Plush, with room to shift weight
The long MX-style seat lets you slide back on descents or forward on climbs—critical for control. While there’s no ergonomic adjustability (no bar rotation, limited suspension tuning), the default setup works for most riders.
Ideal for: Commuters, trail explorers, or beginners wanting a confidence-inspiring platform.
Street Legal? Absolutely Not.
Let’s be clear: The GT73 Pro is NOT street legal in the U.S. or most countries.
Why?
- Top speed exceeds 28 mph (Class 3 e-bike limit)
- No pedals that meaningfully assist (they’re cosmetic)
- Lacks required lighting (e.g., front turn signals, reflectors)
- No VIN or DOT certification
The pedals and turn signal indicators are for show only—a common tactic to skirt regulations. Ride on public roads at your own risk.
This is an off-road or private property vehicle only.
Display & Controls: Basic But Functional
The dashboard is minimalist:
- Battery level (as bars—no percentage!)
- Speed, odometer, trip meter
- Max speed recall
- Headlight, horn, and non-functional turn signal icons
Biggest complaint: No battery percentage. You’re left guessing how much juice remains—a frustrating omission in 2024.
Other controls:
- Key ignition + power button
- Mode selector: Eco / Standard / Turbo
- Torque sensor for pedal assist (works, but irrelevant since it’s throttle-dominant)
It’s not high-tech, but it gets the job done.
GT73 Pro vs. Ridstar Q20 Pro: Which Should You Buy?
If you’re cross-shopping, here’s how the GT73 Pro stacks up against the Ridstar Q20 Pro (~$1,799):
Choose GT73 Pro if: You want long range, comfort, and high top speed on flat ground.
Choose Q20 Pro if: You need torque, hill power, and dual-motor reliability.
Final Verdict: Who Is the GT73 Pro For?
The GT73 Pro isn’t the 50 mph dirt-shredder it’s marketed as. But it’s not a scam either. It’s a capable, comfortable, long-range electric bike for the right rider.
✅ Buy it if you:
- Live in a flat area
- Want a sub-$2K entry into electric dirt biking
- Prioritize range and comfort over raw power
- Ride on private land, fire roads, or bike paths
- Need a fun, reliable commuter (off-road only!)
❌ Avoid it if you:
- Live in hilly/mountainous regions
- Expect true 3000W performance
- Plan to ride legally on streets
- Want aggressive off-road capability
The Bottom Line
At $1,999, the GT73 Pro delivers solid build quality, excellent brakes, great range, and surprising comfort—but underwhelming power for its specs. It’s a “Goldilocks” bike for flat-terrain riders who value practicality over adrenaline.
Just don’t believe the 50 mph hype.
Realistic expectations = happy ownership.
Ready to Ride?
If you’re in the market for an affordable, long-range electric dirt bike for flat trails and casual commuting, the GT73 Pro is worth a look—as long as you skip the hills.
Pro Tip: Always install the included air shock, ignore the speedometer’s inflated numbers, and never ride it on public roads.
Got questions? Drop them in the comments below! And if you found this review helpful, share it with a fellow e-bike enthusiast.
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