Getting shit done. How cool is that name for an ebike! Eight years ago, Tern added this slogan to its attempt to reinvent the bicycle – yet again. Discreetly hidden behind the three capital letters GSD, it is also omnipresent in the third generation of this e-cargo bike, which was presented today. Presumably, those who ride such a model occasionally stop and think, yes, the name accurately reflects what the bike is all about. You can simply get a lot done with it. The new Tern GSD 2025 wants to continue this legacy.
Without being able to prove this exactly with figures, the GSD is likely to have been a decisive economic factor in the Taiwanese company’s development into a serious benchmark for all competitors in recent years. This applies above all to the compact e-cargo bike segment. So the shoes — or tyre tracks? — for the current version seem rather big. And inevitably, the question arises: What’s new? Fittingly, Joshua Hon, founder of Tern, addresses this directly in the corresponding press material and gives the following answer: ‘Everything. Pretty much every aspect of the bike has been redesigned to work better.’ Ok. Let’s see if that’s actually true and what innovations distinguish the 2025 model from its predecessor.
1. Tern GSD 2025 – New frame
2. Atlas G Rack rear rack stronger and more flexible
3. New Stow Decks footboards adjustable
4. Revised Atlas Lockstand easier to use
5. Gen3 of the Tern GSD features Bosch Smart System
6. New accessories for the Tern GSD 2025
7. USB-C port for additional charging options
8. What does the GSD Gen3 take over from its predecessor?
1. Tern GSD 2025 with new frame
As is well known, the frame of a bicycle is considered its heart. The heart of the new GSD beats differently from that of the previous model. That’s because a number of changes have been made to the frame. Larger and stronger. These two words aptly summarise the differences. In this case, bigger means longer. Both the wheelbase and the overall length have increased by twelve centimetres. The increase from 124 centimetres to 136 centimetres and from 180 centimetres to 192 centimetres, respectively, in combination with a lower centre of gravity, should improve the ebike’s handling.
Tern emphasises that, despite these dimensions, it is still as long as a standard city bike. In fact, comparable long-tail cargo bikes, in which an extended rear rack carries the majority of the load, are larger. For example, the wheelbase of the Specialized Turbo Porto is around 144 centimetres. With a 24-inch front wheel and a 20-inch rear wheel, this results in a greater length than the Tern. The GSD continues to use a 20-inch wheel size at the front and rear.
However, the GSD wants to compete with urban ebikes. And at this point, the city ebike should generally be shorter. To illustrate this, we have briefly looked at the geometry of the Bergamont E-Sweep. In the largest frame size, its wheelbase is just under 112 centimetres. Due to the much larger 28-inch wheels, this results in a total length of around 182 centimetres. It’s best to judge for yourselves whether or not both ebikes fall into the same range or not.
Ready for even heavier loads
Along with the increase in length, the quality of the frame has also increased, or more precisely, that of the frame tubes. The hydroformed tubes have been reinforced and now offer greater rigidity. This is reflected in the maximum permitted total weight of the Tern GSD 2025. This has increased by ten kilograms and is now 210 kilograms. To ensure that you can rely on it at all times, the manufacturer has had the frame certified according to the German cargo bike standard DIN 79010. The suspension fork, brakes, kickstand and rear rack were also tested.
Other components such as the steering column, seat post, pedals and wheels were tested by an independent test institute. The manufacturer does not specify which institute it was exactly. In the past, Tern repeatedly worked with EFBE Prüftechnik GmbH in Waltrop, Germany. In any case, the responsible institute has given the green light for a higher load capacity. This means that in the future, riders of the GSD may weigh a maximum of 130 kilograms instead of the previous 120 kilograms.
One size, many customisable details
Tern’s press release states that the geometry has also been further developed. Unfortunately, the manufacturer doesn’t provide any details. The result is a ‘more stable, confident ride with heavy loads or passengers’. That being said, the frame is still a one-size-fits-all. However, as usual, you have numerous options for fine-tuning the seating position to suit your height. Most of the parts in question – seat post, handlebars and stem – can be conveniently and quickly adjusted using quick-release skewers. With the right settings, Tern estimates that people between 150 and 200 centimetres in height can safely control an GSD.
At the rear end of the frame, there is still a solid plastic protector as well as small feet. This way, it won’t be damaged if you park the ebike vertically. If you can hold it on the rear wheel for a longer period of time, you can get around some narrow corners that the GSD would find difficult to master horizontally. With the necessary practice, you can even roll it into a lift that is as level as possible.
2. Atlas G Rack rear rack stronger and more flexible
The mighty rear rack is no longer part of the frame. But don’t worry, the rack itself is still there. It is just no longer welded directly to the frame and painted in the frame colour. The new Atlas G Rack is now bolted to the main frame. This has not reduced its load capacity, which remains constant at 100 kilograms. Tern has been taking this approach more often recently. Tern Quick Haul, Tern Orox, Tern Quick Haul Long – all feature a rear rack that can be screwed on and off.
Compared to its predecessor, the Atlas G Rack is a few centimetres longer. This creates a little more space for cargo and passengers. You can carry younger children in a maximum of two child seats. If they are a little older, a bench seat with a matching railing is a good option. Alternatively, an adult can ride along. Always keep an eye on the maximum load limits for the rear rack and the entire ebike.
In addition, the rear light remains integrated in the rear rack. Thanks to its sensor, the light shines brighter as soon as you brake. This is an extremely useful feature, especially when transporting other people.
3. New Stow Decks footboards adjustable
The previously integrated rear rack always included integrated footboards called Lower Decks. These are now being developed into a separate accessory. Named Stow Decks, the footboards have the advantage of folding out and folding up in five incremental tilt positions. If someone is sitting on the rear rack, you can logically fold them up. If, on the other hand, you have attached large panniers to the rack, the footboards can provide additional support for their contents. You can adjust their angle depending on how full the bags are packed. Some of you may already be familiar with the Stow Decks from the Tern Orox. Each side can support a maximum weight of 35 kilograms.
4. Revised Atlas Lockstand easier to use
It is immediately apparent that something has changed with the two-legged stand. Not necessarily in terms of the shape of the Atlas Lockstand, but rather in the way it is operated. The cable used to fold and unfold it ends in a rounded plastic cover on the Tern GSD 2025 that can hardly be described as anything better than a dark bulge. We won’t be able to say what’s under this cover and what exactly happens there until we get to take a look at a model ourselves. However, it most likely has something to do with a comment from Joshua Hon, who announced in the press release that the stand is noticeably easier to set up than before.
5. Gen3 of the Tern GSD features Bosch Smart System
If the predecessor dates from 2021, switching to Bosch’s Smart System is probably an unavoidable innovation. For understandable reasons, Tern is taking this step – but in its own special way. The manufacturer is equipping two models with the current generation of drives and presenting two others with Bosch’s second development stage ebike systems.
In terms of the motor, this does not have any major consequences. All four versions of the Tern GSD 2025 are equipped with a Bosch Cargo Line. Its performance of up to 600 watts, a torque of 85 Newton metres and assistance of up to 400 per cent is identical for the ‘old’ and ‘new’ motor.
However, it is noticeable in all the functions and components that have turned a drive into a complex ebike system today. Many extras are simply not available in the Bosch drives produced up to 2022, such as:
- increased theft protection provided by the acoustic alarm of a Bosch ConnectModule
- location data of the GPS module
- anti-lock braking system for safer braking manoeuvres with a full load and on wet surfaces
- wireless transfer of new firmware and software
- better integration of Komoot for route planning and navigation
- using a smartphone as a display with the help of a SmartphoneGrip
Range a decisive factor in the purchase?
In addition, there is only one version of the new GSD with the Smart System that comes with the Bosch PowerPack 800 with a capacity of 800 watt hours. And the more you transport larger loads with the e-cargo bike, the more important this feature becomes for you. Yes, Tern has once again prepared the GSD ex works with the option for simultaneous use of a second battery. However, being able to use 800 watt hours in one go is likely to be more attractive to many than paying extra for a possible 1,000 watt hours with one of the other models with a Bosch DualBattery. Another factor in favour of the newer Smart System is that spare parts will be available for longer than for the systems from Bosch’s second development stage.
6. New accessories for the Tern GSD 2025
One of the great strengths of every Tern GSD has always been the enormous number and variety of practical accessories. This can be transferred 1:1 to the recently released Gen3 of the e-cargo bike. On the one hand, because a number of accessories from the previous range also fit the 2025 GSD. And on the other hand, because new add-ons are being added.
- Sun Shield – sun canopy to protect passengers from UV radiation, roll-up side panels ensure sufficient ventilation on hot days
- Rain Shield – rain cover for the Sun Shield with separate bag
- Cargo Hold 52 Panniers – waterproof panniers with a volume of 52 litres each
We also include Tern’s special service promise as an intangible accessory in this category. The manufacturer assures you that it will keep important spare parts for the ebike system, the drive and the brakes in stock for seven years from the date of purchase. This also includes the batteries, for example. With this, Tern obviously wants to protect your investment in such an ebike. You probably know something similar from the automotive sector.
7. USB-C port for additional charging options
One last new feature raised a few questions for us. On the left side of the frame, above the kickstand, the models with the Bosch Smart System feature a USB-C charging port. This allows you to charge mobile devices with a power output of ten watts. In itself, this is of course totally practical. However, the position of the port on the Tern GSD 2025 seems awkward. The distance between the port and the handlebar is much too great to use it to charge your smartphone. You would need an extremely long cable that would have to be secured while riding to prevent it from dangling loosely. It would be much more convenient to charge your smartphone using the Bosch SmartphoneGrip, especially since the Bosch Kiox 300 display already includes the necessary mount.
Maybe the connection is intended to allow passengers on the rear rack to be able to charge their mobile device with power, in order to enjoy a level of travel comfort similar to that on the train or in the car. Or maybe it’s just supposed to be possible to charge your device while riding, with the device stowed in a rear pannier for this period of time. As you can see, we’re not sure. You may have better ideas.
8. What does the GSD Gen3 take over from its predecessor?
Contrary to Joshua Hon’s statement at the beginning, there isn’t only new stuff to discover about the Tern GSD 2025. No big deal. After all, it makes perfect sense to stick with proven details. And that’s exactly what’s happening. These are important features that you already know from the predecessor and will find on the models for the current season:
- Andros Stem – A patented, tool-free double quick-release system allows you to fine-tune the height and distance of the handlebar to the rider.
- Combo Mount – The two solid mounts on the head tube ensure that various front racks can be mounted and loaded with a maximum of 20 kilograms.
- Tail light with brake light function – linked to an acceleration sensor, the tail light emits a brighter glow to signal to traffic behind you that you are braking.
- TowBar – with the help of the frame-integrated mount, you can attach trailers from Thule, Burley and Weber without additional adapters.
The manufacturer will also be sticking with the range of models, with a total of four versions. Two of them are based on the Bosch Smart System:
- Tern GSD R14
- Tern GSD S10
In the other two, a system from Bosch’s second development stage provides the electric assistance.
- Tern GSD P00
- Tern GSD P10
In terms of the drive system, both groups follow the same approach. One model features a hub gear with a carbon belt, while the other has a Shimano derailleur gear system with ten gears. The Tern GSD R14 has been given the highest quality components. This applies to the Rohloff E-14 with its enormous gear ratio range of 526 percent, the Bosch PowerPack 800 as well as the Bosch ABS. In the end, this is reflected in a price of 9,499 US Dollars. It is more affordable with the older Bosch drives. Here you start at 5,399 euros.
Availability of models
Tern has a very clear strategy for which model is sold in which country. For example, there is no uniform regulation for Europe. Instead, the offers sometimes differ quite considerably. The Tern GSD S10 (Beetle Blue, Satin Beige and Satin Black), the Tern GSD P00 (Papaya Orange and Satin Black) and the Tern GSD P10 (School Bus Yellow and Satin Black) are available on the German market. Those who would rather ride the top model, on the other hand, will have to look in France. There, the list includes the Tern GSD R14 (Satin Iron Grey), the Tern GSD S10 (Beetle Blue, Olive Green and Pearl White) and the Tern GSD P10 (School Bus Yellow, Satin Beige and Satin Black). For those for whom the colours are the deciding factor, we recommend Great Britain. The same models are available there as in France. However, the range of colours for the S10 has been extended to five. And for the P10, there are as many as eight, including the seemingly rarely available Satin Midnight Blue.
Tern GSD 2025 at a glance
- Variants: Tern GSD R14, Tern GSD S10, Tern GSD P00, Tern GSD P10
- Frame: aluminium
- Frame size: one size
- Suspension fork: SR Suntour custom
- Motor: Bosch Cargo Line (Smart System), Bosch Cargo Line (BES02)
- Battery: Bosch PowerPack 800, Bosch PowerPack 545, Bosch PowerPack 500
- Display: Bosch Kiox 300, Bosch Purion
- Control unit: Bosch LED Remote
- Drivetrain: Rohloff E14, Shimano Deore, Enviolo
- Brakes: Magura MT-C ABS, Magura MT5
- Maximum load on front rack: 20 kg
- Maximum load on rear rack: 100 kg
- Weight: from 34.6 kg
- Maximum weight of rider: 130 kg
- Maximum permitted total weight: 210 kg
- Colours: Beetle Blue, Gloss Iron Grey, Olive Green, Papaya Orange, Pearl White, Satin Beige, Satin Black, Satin Midnight Blue, School Bus Yellow
- Prices: from 5,399 euros
Pictures: Mobility Holdings Ltd.