Bosch Kiox 300: Everything You Need to Know
The Bosch Kiox 300 is a 2.0-inch removable color display designed for the Bosch Smart System, which debuted in the 2022 model year. Let’s get this out of the way right away to avoid any confusion: this is not the same product as the older 2018 Bosch Kiox, which was designed for the eBike System 2. The two systems are not interchangeable, and it’s precisely this confusion that causes headaches for those looking for a replacement part. The display shows trip, battery, power, elevation, and fitness data, and can be extensively customized via the eBike Flow app. It also allows for navigation, though not independently: the route and GPS location come from your connected smartphone, which you can leave safely in your pocket or bag during your ride.
Key Takeaways
- Compatibility is the key factor when making a purchase. The Kiox 300 works exclusively with the Bosch Smart System; an older eBike System 2 motor cannot simply be retrofitted with it.
- It's a screen, not a control unit. Without a compatible remote control, such as the LED Remote or the Purion 200, this buttonless screen loses much of its appeal.
- Navigation depends entirely on your phone. Bluetooth and GPS must be enabled: the Smart System does not offer any standalone offline navigation.
Kiox 300 Overview
| Features | Kiox 300 | Nuance |
|---|---|---|
| System | Bosch Smart System | Not compatible with the eBike System 2 |
| Screen | 2.0 inches, color | Smaller than the Kiox 500 |
| Order | No buttons on the screen | Requires a compatible remote control |
| Editing | Removable | Check the mount and contacts |
| Weight | About 37 g (current) | The MY2022 manual listed ~32 g |
| Protection Rating | IP55 (current) | The MY2022 manual listed IP54 |
| Navigation | Using the Flow app and your smartphone's GPS | No offline autonomous navigation |
Kiox, Kiox 300, Kiox 500: Which Is Which?
When it comes to names, it’s a bit of a minefield. The original 2018 Kiox is part of the eBike System 2 and works with the eBike Connect app. The Kiox 300, on the other hand, is part of the Smart System and uses the eBike Flow app. Many people type “Kiox” and “Kiox 300” into search engines somewhat randomly, when in reality these are two distinct generations that can’t just be swapped out like that.
The Smart System also includes the Kiox 500 and the desktop Kiox 400C, alongside the Kiox 300. In my opinion, the Kiox 500 isn’t automatically “the best Kiox”: its 2.8-inch screen is larger and offers notification sounds, but the Kiox 300 remains more compact and lighter. If you’re torn between the two, or if your bike is still equipped with a Bosch Nyon or an older Intuvia, it’s best to check your system generation first before making a decision.
What's shown on the screen
The basic specs are solid for its size: a 2.0-inch color display, typical maximum brightness of around 1,000 cd/m², automatic brightness adjustment, a detachable mount, and a weight of about 37 grams. Customization is one of the main reasons to choose the Kiox 300: the Flow app offers about 30 layouts and dynamic screens.
Not all of the features shown are available on all bikes. The ABS feature requires a Bosch eBike ABS system, eShift requires a compatible electric drivetrain, and Trick Check works only with certain specific high-performance motors. A review published in 2022 may therefore, quite rightly, note the absence of a feature that was added later via an update in 2024 or 2026.
Lock, Key, and Security
The removable display can be used as a digital key for the free eBike Lock feature, which locks the motor. It’s important to be clear on this point: eBike Lock is an additional motor lock; it is by no means a replacement for a mechanical lock. For live tracking and the alarm, you’ll also need a compatible ConnectModule and a paid Flow+ subscription: the display itself is not a GPS tracker.
I think eBike Lock is a pretty cool extra feature, but anyone who thinks they can do without a chain lock is sorely mistaken. It acts as a brake on the motor, not on someone determined to steal the entire bike. So always combine it with a physical lock, as noted in our guide to Bosch e-bike error codes for other useful safety tips.
The Kiox 300 on a refurbished e-bike
Buying a used bike involves a digital transfer. The previous owner must remove the bike from the Smart System in their Flow account; otherwise, the bike will remain paired to someone else. Before delivery, check the pairing and the status of the Lock, and make sure the original display is present and connects properly to the app. If you encounter issues with the display after purchase, our Bosch display troubleshooting guide covers the first steps to take, and if a replacement is necessary, we also explain how to replace a Bosch Intuvia display.
That is precisely where the strength of a bike serviced by professionals lies: a specialist can diagnose the system, update the software through official channels, and verify the account transfer. This way, for a manageable budget, you often get a bike that’s better equipped than a new model—provided you verify that the motor, ABS, or drivetrain components required for the display’s functions are indeed present. This type of inspection is, in fact, part of what makes refurbished e-bikes reliable.
Jos's Review
The Kiox 300 does exactly what it’s supposed to: it offers a clear display, extensive customization options, and a well-designed lock function. But don’t let the word “Kiox” alone lull you into a false sense of security: always check which generation it is before buying a used part or bike. It’s the kind of detail that makes the difference between a leisurely ride and an afternoon spent on the phone with customer service.
FAQ
Does the Kiox 300 have GPS?
No. The screen uses the GPS location and route data from your connected smartphone. Without a phone, basic route data remains available, but navigation and many smart features are limited or unavailable.
Is the Kiox 300 compatible with all Bosch e-bikes?
No, only electric bikes equipped with the Bosch Smart System. An older eBike System 2 motor cannot be retrofitted with it without a complete system overhaul.
Is the Kiox 300 waterproof?
Bosch currently lists the IP55 rating: protected against dust and water jets. The first manuals listed IP54. In both cases, do not submerge the device or use a high-pressure washer. Check out our guide to Bosch screens to learn more about rain and your screen.
Can I use the Kiox 300 as a bike lock?
Yes, if you set it up as a key in the Flow app for the eBike Lock feature. This locks the motor, but it does not replace a mechanical lock. So always use it in combination with a physical lock.
How do I digitally transfer ownership of a used Bosch e-bike?
The previous owner removes the bike from their eBike Flow app. Then check the Lock's registration and settings to ensure the e-bike isn't still paired with the previous account.
Written by: Jos Mans | Published on: July 17, 2026 | 6-minute read
About the Author: Jos Mans
Jos is both a writer and a cyclist—and more often than not, he does both at the same time. With thousands of kilometers under his belt and just as many words on paper, he combines his two great passions: being on the road and telling stories.