Urtopia Carbon Fold 2 Review | Striking the Ideal Balance?

We used the method explained above to test the Carbon Fold 2’s real-world minimum and maximum range. With its 250W rear-hub motor and 36V, 245 Wh seatpost battery, our testers traveled 19.7 miles using Boost and 45.6 miles using Eco.

Due to the abundance of high-powered, high-capacity folding e-bikes for sale in the US, we have only tested a handful of models similar to the Carbon Fold 2 in size, weight, motor power, and battery size. As such, I opened up the group of models I used for comparison to include those with more powerful motors but comparably small batteries.

These other models were equipped with motors averaging 458W nominal and 411 Wh batteries. They averaged 23.2 and 52.0 miles in their high and low-power tests, respectively, placing the Carbon Fold 2 somewhat below average—but not unreasonably so, given its differences in specs.

In fact, we consider Urtopia’s folding e-bike to be well-specced for its intended environment and purpose. Its range of roughly 20 to 43 miles should cover even a relatively lengthy round-trip commute at full power, while those using a lower assist level should be able to stretch their charge to cover multiple trips.

The evidence for our interpretation can be found when comparing the bikes’ energy efficiency, as determined by dividing battery capacity by mileage. The Carbon Fold 2 used significantly less energy than average when compared to the same group. It averaged just 5.8 and 12.4 watt-hours per mile (Wh/mi), while other bikes averaged 8.9 and 17.3 Wh/mi, respectively. This helped the bike cover more ground with less gas in the proverbial tank.

Additionally, while we don’t think it’s necessary for most riders, the Carbon Fold 2 is compatible with an optional, external range extender battery. This accessory can add 353 Wh of additional capacity. Based on our testing, and the average energy consumption above, we expect bikes equipped with both batteries to cover between 48 and 103 miles.

Whether used for full-length commutes, exercise, or leisure rides, or short parts of larger trips, we consider the Carbon Fold 2’s results to be more than practical. This makes the bike viable as a compact, relatively low-cost means of transportation or a supplement to other modes of travel.

While its Hill Test results may not initially seem remarkably impressive on paper, we were highly impressed by the Carbon Fold 2’s climbing performance! Let me explain.

We tested the bike’s optional throttle and its highest pedal assist level using the method explained above. As shown, it completed the throttle portion of the test in 5:09 while keeping an average speed of 5.9 mph. In Boost mode, the addition of our test rider’s pedal effort shortened its time to 2:25 and increased its average speed to 11 mph.

Why were these results significant? At the time of writing, the Carbon Fold 2 is the first and only e-bike we’ve tested with a throttle and 250W hub motor to finish this time when carried completely by motor power alone. While it was decidedly the slower of the two trials, the fact that the bike completed its throttle test greatly exceeded our expectations.

It’s worth noting that, while Justin was able to maintain nearly 6 mph on average during his test at the Devil’s Backbone, rider weight is a significant factor in the bike’s ability to maintain forward momentum. I’m roughly 25 lbs heavier than Justin, and at our less challenging secondary test location, my average was cut to 5.1 mph. Those who are well above 200 lbs may reach the throttle’s natural limitations.

But now, let us consider the pedal test results. At the time of writing, folding e-bike models like the Carbon Fold 2 are relatively uncommon—we have only tested a handful of similar bikes at this location—so apples-to-apples comparisons are difficult.

Compared to e-bikes of all varieties with 250-350W rear-hub motors, however, the Carbon Fold 2 did well. These e-bikes are rarely equipped with throttles, but in their max-assist pedal tests, they averaged 2:39. This places Urtopia’s folding e-bike well above average, which is somewhat surprising, considering its specs.

At roughly 37 lbs, including its battery, the Carbon Fold 2 is lighter than average (41 lbs) among the comparison group, making it easier to pedal uphill. Its motor, however, is less powerful than average, producing 500W of peak power and 42 Nm of torque. Our comparison group, meanwhile, averaged 599W of peak power and 45 Nm of torque.

In my personal testing, I found that I had to keep a fairly fast cadence while pedaling uphill to avoid losing momentum. This may have given the bike another slight advantage in the test, though overall, its active feel was very characteristic of bikes with similar power.

E-bikes like the Carbon Fold 2 are meant to be helpful, not overpowering. They allow riders to climb hills with a natural but less strenuous feel, ensuring that they’re not exhausted upon finishing the job.

Based on its results and real-world feel, we consider the bike a resounding success when it comes to hills, though, of course, prospective buyers should be aware that the throttle has its limits, and pedaling in the highest assist level will still require moderate legwork.

With its Tektro HD-M3120 hydraulic disc brakes, the Urtopia Carbon Fold 2 demonstrated impressive stopping power. Its average stopping distance after three tests, as explained above, was just 16’1”. Not only is this an excellent result for a folding e-bike, it’s also one of the best we’ve measured, period.

Case in point: the Carbon Fold 2 is tied for the third shortest stopping distance we’ve recorded from an e-bike. If that doesn’t give you confidence in its braking performance, we’re not quite sure what will.

The reasons for the bike’s significantly above-average result are not clear, but the bike’s carbon fiber frame material and its wheel/tire size may have been factors that gave it an advantage.

Carbon fiber naturally has more flexibility than aluminum alloys or steel. During our Brake Test, the Carbon Fold 2 seemed to flex in a leaf-spring-like fashion, which may have affected its weight distribution upon applying the brakes. Its 18×2” street tires, which offer a relatively wide contact patch for good grip, also helped to keep it low to the ground.

While testing the bike, I observed that its brakes felt strong, effective, and confidence-inspiring, though it could squeal somewhat loudly when applying a lot of force to the brake levers.

I might recommend that new riders get a little practice so as not to be surprised by the Carbon Fold 2’s braking force. It performed extremely well in this test, easily earning our approval.

In my experience, extremely lightweight folding e-bikes are often relatively stripped-down to prioritize portability, but I was pleasantly surprised by how well-equipped and functional the Carbon Fold 2 was. Its overall ride quality exceeded my expectations, though there are a few points prospective buyers should be aware of in advance.

Starting with the bike’s sizing and geometry, Urtopia advertises that it should fit those between 5’1” and 6’1”. Based on my experience as a 5’11” rider, I’d say this is relatively accurate. There may even be enough room for some taller folks; I set the saddle height for full leg extension, but there was enough height remaining for those with longer inseams.

Overall, the Carbon Fold 2 has a great range of adjustability. The seatpost battery offers around 5.5” of saddle height adjustment, while the bike’s telescoping stem can change handlebar height by around 6”. With relatively low handlebars, riders on the tall side should expect a somewhat forward-leaning posture, but shorter folks will likely sit more upright.

In my opinion, the bike felt enjoyable and comfortable to ride, largely thanks to its relaxed, pedal-forward geometry. E-bikes with this design move the bottom bracket toward the front of the bike, resulting in a more laid-back, relaxed feeling that still provides proper leg extension for efficient pedaling.

I liked the bike’s lightweight ergonomic foam grips, and its performance-style saddle was more comfortable than many others I’ve tried. It could feel a bit firm on long rides, and the rigid seatpost battery seemed to transfer bumps to my body more than a standard seatpost, but overall, this setup worked well for short and medium-length trips.

While cruising, I noticed that the Carbon Fold 2 had more flexibility than many other folding e-bikes I’ve tested, which is both a positive and negative. On the plus side, this helps the bike frame to absorb bumps and vibrations, keeping the ride smoother and more comfortable. On the other hand, it results in slightly less crisp handling—though I feel that the tradeoff is worthwhile.

The bike’s steering has a slight learning curve due to its narrow handlebars and small 18×2” tires. While I found the Carbon Fold 2 both nimble and zippy, it can also be somewhat twitchy, so small movements of the handlebars can result in relatively sharp changes in direction. This also makes the bike feel more playful and lively, which is, again, more than a fair trade.

Motor responsiveness was a highlight, which is a characteristic we’ve come to expect from Urtopia’s e-bikes. Pedaling felt natural and rewarding, with quick power delivery that supplemented the ride instead of overpowering it.

I mentioned in the Speed Test section earlier that the bike has four assist levels, including an automatically-adjusting Smart Mode. This intuitive ride setting seemed to fluctuate mostly between the power levels of Tour and Boost, making it easy to ride and pedal while getting the right amount of power—all without stressing about switching assist levels.

My only real point of critique is the bike’s throttle activation, which requires a double-press of the throttle lever to engage. This is likely a safety measure designed to prevent accidental triggering of the motor. I’d have preferred the throttle mounted to the left handlebar instead of the right to avoid shifting and motor engagement conflicts, but I’d also love to be able to deactivate the double-press requirement.

Overall, the Carbon Fold 2 has an easy-to-grasp, intuitive interface that makes it approachable for new riders. While it offers some deeper-level customization options, such as motor tuning via the display menu, for those who want them, it’s set up intuitively for those who do not. There’s no app to pair to, and it works well out of the box. Additionally, with its Smart assist mode, only a need for standard operations like shifting and braking.

When it comes to folding mechanisms, the Carbon Fold 2 functions similarly to most folding models we’ve reviewed, including many of the best folding e-bikes. The hinged frame swings the front and back halves together, and a magnetic attachment keeps them connected. The wheels align, allowing the bike to be rolled along once folded. Altogether, the bike measures roughly 33”L x 18”W x 28”H in this configuration.

The end result is a bike that’s practical for daily use, easy to hop on and ride, and more robust and functional than many similar models on the market.

After reviewing a wide range of folding e-bikes, I’ve learned that many takeaways are a matter of perspective. Those considering the Urtopia Carbon Fold 2 while expecting the capabilities of a more powerful (and typically, much heavier) e-bike may be disappointed, while those seeking balanced portability and performance should be thrilled.

As we’ve covered, the Carbon Fold 2 has some limitations based on its size, motor power, and battery capacity—but more importantly, it performed exceptionally well within those constraints. It’s well equipped, well specced, and, as our testing proved, a great overall performer.

The bike features an intuitive, easy to grasp pedal assist system with smart programming (and an even more user-friendly Smart riding mode). Its motor is impressively efficient, allowing for practical range with a single battery and potentially incredible range with an optional dual-battery setup. Its motor is lively yet controlled, making climbing active but enjoyable. Finally, its braking performance was remarkably strong and impressive.

The most notable area of critique revolves around the throttle’s placement and engagement. A left-side throttle and the option to disable its double-press requirement would be more user-friendly.

Ultimately, the Carbon Fold 2 is well-suited for urban riders seeking a reliable daily-use e-bike or those simply looking for a lightweight leisure or exercise bike. It’s ideal for apartment dwellers with limited storage space, perfect for those with multi-stage commutes, and geared towards any who need to lift and carry their bike regularly.

If you’re seeking a highly portable, yet seriously well-equipped folding e-bike, the Carbon Fold 2 should be on your radar. You’re not likely to find such a solidly-performing and ultra-lightweight carbon fiber ride at such an affordable price—but in our experience, that is Urtopia’s specialty.

Happy Riding! Make sure to let us know if you have any questions or if you think we left anything out in this review of the Urtopia Carbon Fold 2 down in our comments section.