If you’ve been shopping for an affordable electric bike, chances are you’ve seen the Gotrax name. In just a few short years, Gotrax has sold over a million electric bikes and scooters — and now their rides are showing up in big box stores like Best Buy and Walmart.

Their latest models, the Gotrax Z4 Lite and Gotrax Z4 Pro, are creating a buzz among commuters and casual riders alike. But with two new options, the question is clear: which one deserves your hard-earned money?

We tested both bikes head-to-head — looking at speed, range, braking, hill climbs, and overall ride comfort — to help you decide.

On paper, the difference is simple:

• Gotrax Z4 Lite → Lightweight, portable commuter bike

• Gotrax Z4 Pro → Bigger, sturdier build with more power and range

The Lite is best if you’re looking for something compact and easy to carry, while the Pro is built for riders who want more punch and longer rides.

Let’s talk speed and acceleration:

• Throttle only: 20 mph consistently

• Pedal assist: Up to 28 mph

• 0–15 mph throttle only: 6.12 seconds

• 0–15 mph with pedaling: 3.07 seconds

That torque sensor + cadence combo makes pedaling smooth, and the Shimano 8-speed shifts cleanly. For city commuting and bike lanes, 20–28 mph feels right in the sweet spot.

Where it struggles: throttle-only hill climbs. My test climb came in at 15.52 seconds throttle-only, improved to 12.37 seconds with pedaling. It’s not a monster hill-crusher, but it gets the job done for urban inclines.

Acceleration & Top Speed

• Z4 Lite: Quick off the line, ideal for stop-and-go city traffic.

• Z4 Pro: Stronger acceleration and holds higher speeds longer.

Gotrax claims 20 mph for the Z4 Lite and 28 mph for the Z4 Pro — and in testing, both lived up to expectations. Even better, both bikes maintained speed well, even as the battery drained (a common weakness in budget e-bikes).

Pro tip: to unlock the Z4 Pro’s full 28 mph, hold the “+” and “–” buttons for a few seconds and toggle higher speeds with the “M” button.

Range

• Z4 Lite: Up to 25 miles per charge

• Z4 Pro: Up to 50 miles per charge

In real-world riding (stop-and-go traffic, some hills, no pedal assist), the numbers came in a bit lower. Still, the Pro easily outlasted the Lite. With pedal assist, you can stretch both ranges significantly.

Hill Climbing

The Z4 Pro’s stronger motor gave it a clear advantage on steep grades. The Lite still performed respectably, especially with light pedaling.

Braking & Safety

Both models come with dual mechanical disc brakes. In testing, they felt stable, controlled, and responsive at 20 mph stops. The Pro’s extra weight meant no major advantage over the Lite in stopping distance.

Ride Comfort

• Z4 Lite: Lightweight, nimble, easier to maneuver in city spaces. Downsides? No suspension, so bumps are noticeable.

• Z4 Pro: Heavier but more comfortable thanks to fat 4-inch tires and suspension. Great grip on varied surfaces, but portability suffers.

Gotrax Z4 Lite

Pros:

• Budget-friendly

• Lightweight and portable

• 20-inch tires smooth out small bumps

• 2-year warranty

Cons:

• Limited range for longer commutes

• Smaller motor struggles on steep hills

• No suspension for rougher roads

  Gotrax Z4 Pro

  Pros:

  • More powerful motor and better acceleration

  • Longer range (up to 50 miles)

  • Higher top speed (28 mph unlocked)

  • Fat tires + suspension = smoother ride

  Cons:

  • Heavier and less portable

  • More expensive than the Lite

It really comes down to how you’ll ride:

• Choose the Gotrax Z4 Lite if you want something budget-friendly, lightweight, and easy to carry for short commutes or city riding.

• Choose the Gotrax Z4 Pro if you want extra speed, more range, and a smoother ride — and you don’t mind carrying a little extra weight.

Both bikes carry Gotrax’s reputation for affordable, beginner-friendly e-bikes. But if performance is your priority, the Z4 Pro is the clear winner.