Greyp T5.2 in review – From connectivity king to trek-king?

With the T5.2, Greyp dug deep into their bag of tricks to reach the next level of ebike experience, packing modern technology and countless connectivity features into a classic trekking platform. Can the Greyp T5.2 with MPF 6.0c motor, 700Wh battery and permanent internet connectivity secure the coveted Best in Test in our trekking ebike group test?

That eBike is part of our big trekking eBike group test. There you can find an overview of the test fleet and all information on the latest generation of trekking eBikes.

Greyp T5.2 in review – This is how the high-tech E-trekking bike rides

In terms of software and battery technology, Greyp have shown real pioneering spirit. Instead of simply integrating a motor into an ebike, the brand focuses on its core competencies and strives to create a holistic data-driven bike experience. We took a closer look at the new digital ebike and tested Greyp’s T5.2 flagship model in size L, which retails at € 5,500 and weighs 26.80 kg. The steep seat tube angle positions you centrally above the motor and shifts your upper body forwards. On flat roads, this puts a fair amount of pressure on your hands, which can be tiring over a long day in the saddle. On the other hand, it ensures good traction on the front wheel, making the Greyp easy to manoeuvre whether you’re leaning it into wide corners on a relaxed Sunday ride or winding your way through packed rush hour traffic. Not even the extra weight of a pannier seems to affect the handling of the bike, provided you’re riding on a smooth surface. However, on unpaved roads, the shallow tread of Schwalbe’s G-One Allround tire generates little traction, resulting in longer braking distances. In a nutshell, the Greyp T5.2 feels safe on paved surfaces but fails to inspire confidence on loose terrain. Not even the powerful Formula Cura brakes seem to help here: even though the small two-piston calliper delivers excellent braking power even with just one finger on the brake lever, the knobs of the tires are too short to bite into the dirt.

Hardware, not software – Comfort aboard the Greyp T5.2

The stock 100 mm Rockshox 35 Gold fork of the Greyp damps small vibrations and takes the sting out of bigger hits. However, it’s a different story at the rear. The narrow, low-volume 2.25” Schwalbe G-One tires don’t absorb the irregularities of the trail and, in combination with the stiff aluminium frame and rigid seat post, pass vibrations and hits from the rear wheel straight to your body. Needless to say, this significantly affects the overall riding comfort of the Greyp. As a result, the Croatian high-tech ebike isn’t much more comfortable than the super-sporty Niner RLT e9 RDO gravel ebike and way more uncomfortable than full-suspension bikes like the Riese & Müller Homage. Moreover, the tall standover height and fixed seat post make it difficult to get on and off the bike and the cockpit ergonomics take some getting used to: while the one-finger lever of the Formula Cura brakes is easy to operate, the motor remote with its seven buttons and joystick can be overwhelming. In addition, a slightly annoying rattling noise emanates from the kickstand while riding. On the other hand, the remaining equipment like the solid metal mudguards and the 25 kg rated pannier rack with MIK and Ortlieb QL3.1 mounts, are quiet and functional. Unfortunately, the Busch & Müller IQ-XS headlight doesn’t have a high beam and isn’t suitable for regular night riding.

The connectivity of the Greyp T5.2 in detail

As far as connectivity goes, the Greyp T5.2 is the big kahuna in our E-trekking bike group test and better connected to the virtual world than Mr. Zuckerberg himself. When you fire up the Greyp T5.2, it takes around half a minute for the system to boot. If you take a break on a ride, we recommend using the standby mode instead of turning off the system completely to avoid wasting time and saving you frustration. When riding without a smartphone, the easy-to-read 3” display on the stem provides all basic data. Alternatively, you can attach your smartphone to the bracket on the display, connect to the Greyp app via wifi and access countless additional features. In “Ride” mode of the app, you can also use your phone as a navigation device. The app displays the range of the remaining battery capacity as a radius from your current location, taking account of the current support mode and topography in its calculation. For fitness fans, Greyp include a wristband with an integrated heart rate monitor that automatically connects to the Greyp app, allowing the bike to adjust the support levels according to a preset heart rate training zone. A wide-angle camera at the front and one at the rear are always on and, depending on the amount of free storage space on your smartphone, can record several hours of riding time. You can also display the video on your smartphone and use this as a rearview mirror to keep an eye on your riding buddies on a bike tour – awesome! The video plays back with a slight delay, though this stays less than a second.

The Greyp T5.2 bursts with connectivity features: eSim, wifi, cellular network, GPS, Bluetooth, ANT+ and the USB connector. The Greyp takes connectivity to the next level!”

Well connected, both on and off your bike – The remote functions of the Greyp T5.2

Even when you park the Greyp and walk away, you remain connected with your bike, because the T5.2 is permanently online thanks to an integrated eSim. If you’re worrying about your phone bill, Greyp have you covered, offering free data on the T-Mobile network until the end of 2025. Once you connect your bike with the Greyp app, you’ll be able to control your ebike from a distance using the remote mode. If someone moves the bike or tampers with it, the system will send a warning message with its current location directly to your smartphone. The app also allows you to activate a “kill-switch” which lets you shut down the motor from a distance and even take pictures using the integrated cameras. All in all, the Greyp offers the highest level of theft protection in our group test and is only matched by the Riese & Müller Homage. However, the excellent networking comes at the expense of aesthetics and reliability. Countless cables and plugs clutter the cockpit and tend to come loose while riding. During our test, the motor shut off unexpectedly and the brake light sensor disconnected itself from the Formula Cura brake lever.

Have a coffee, I’m rebooting my bike.”

Tuning tips: use standby mode instead of shutting down the motor | replace the fixed seatpost with a PROCRAFT Drop-Suspension post

The MPF 6.0c motor of the Greyp T5.2 in detail

Teething problems such as loose contacts and slow boot times prove that Greyp haven’t yet reached the pinnacle of their connectivity game. A faster processor and more wireless connections might help in future. After all, you can already update the motor and battery software over-the-air. For the motor, Greyp rely on an exotic MPF 6.0c drive. Unlike the popular Bosch and Shimano motors used by most of Greyp’s competitors, the MPF motor has marginally more torque (90 Nm) on paper, but can’t keep up with the refinement of the others in terms of riding behaviour and power delivery. Even in the most sensitive setting, the motor responds with a significant delay. The first spin of the cranks leaves you wondering where the motor is and when pedalling at low cadences the motor generates little torque. Especially on steep ramps, the MPF motor falls far behind the Bosch and Shimano drives with their progressive eMTB and Trail modes. Moreover, the motor offers noticeable pedalling resistance when switched off and the flimsy spoke magnet is susceptible to damage. Greyp rely on an in-house battery with a whopping 700 Wh capacity and a practical USB port, which allows you to charge external devices like a GPS computer while riding. The battery is partially integrated into the frame and can be easily removed from the top. To make room for it, Greyp’s engineers had to move the two bottle cage mounts to the seat and top tubes of the bike where, depending on the bottle cage you’re using, you may find it hard to access the charge port for the main battery. We recommend using a magnetic Fidlock bottle cage to get around this issue.

Grepy T5.2 conclusion

The ultra-modern connectivity features of the Greyp T5.2 stand in stark contrast with the outdated trekking concept. If you’re after countless connectivity features and planning to start your own YouTube channel covering the most beautiful paved bike routes in Europe, the Greyp might be exactly what you’re looking for. However, off-road the significant lack of traction and riding comfort strongly limit the range of applications of the bike. As a result, the Greyp T5.2 has to pull out of the race for the title of best E-trekking bike all-rounder.

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For more information head to the manufacturer website

The review of the Greyp T5.2 is part of our big trekking eBike group test “The best trekking eBike of 2021 – 8 modern eBikes for touring in comparison”. We’ve tested four different concepts and eight bikes to tell you what modern trekking eBikes are capable of and which one is the best to buy.

Test bike overview

CENTURION Country R2600i | FLYER Goroc3 6.50 | Greyp T5.2 | Kalkhoff Entice 5.B Advanced + | MERIDA eONE-FORTY EQ | Niner RLT e9 RDO | Riese & Müller Homage GT Touring | Trek Powerfly FS 9 Equipped

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Words: Rudolf Fischer Photos: Jonas Müssig