Bosch Tuning Finder

Bosch Tuning Finder: Find the right solution for your Bosch e-bike

Bosch e-bikes differ not only in motor name or generation. For choosing the right product, the Bosch system ecosystem, display, app connectivity, charging plug, BDU identification, rim magnet, ABS, e-Shift, and sensor position are particularly important.

Quickly find the right Bosch product range

Choose the entry point that best suits your level of knowledge. If you are unsure, start with the system check.

The finder uses technical features to guide users to the appropriate Bosch category or product solution – including BES2, Smart System, Rim magnet, ABS, e-Shift, software, box, sensor, module and chip.

Important for Bosch: Terms like Bosch CX, Gen4, or Gen5 are often insufficient. A classic Gen4 CX motor might belong to the BES2 world, while a Smart System CX is already BES3. Therefore, the app, display, charging plug, BDU, magnet type, and special equipment should all be considered together.

Tip: If unsure, run the system check first. This will help avoid typical confusion between BES2, BES3, Gen4, Gen5 and wheel magnets.

Go directly to my system
Step 1:

Which Bosch system is installed?

The motor name is not the only deciding factor. Bosch systems can be most reliably classified by their charging port, display, app connectivity, and control unit.

Bosch System Overview: BES1, BES2 and BES3 are recognized
Orientation: If the e-bike is connected to the Bosch eBike Flow app, it is Bosch BES3 / Smart SystemKiox or Nyon without the Flow app, on the other hand, typically belong to the classic BES2 world.

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Bosch BES1 / Gen1

Bosch Gen1 / Classic Line erkannt

Bosch Gen1 belongs to the early Classic-Line-world. For product selection, it is also important whether an Intuvia or HMI display is installed.

Bosch BES1 / Gen1 / Classic Line Overview
Important NOTE For Bosch Gen1 products, the display type should be checked before selecting a product. Intuvia and HMI are particularly relevant.

What kind of solution are you looking for?

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Bosch BES2 / Gen2–Gen4

Bosch BES2 detected

BES2 is the classic Bosch world before the Smart SystemThis includes many Bosch Gen2, Gen3 and classic Gen4 systems with displays such as Intuvia, Purion, Kiox or Nyon – without the eBike Flow app and mostly with an oval charging plug.

Bosch BES2 charging port / oval Bosch charging plug
Important NOTE Bosch Gen4 can BES2 or Smart System This means that if the e-bike is connected to the eBike Flow app or a LED RemoteIf you own a Purion 200, Kiox 300 or Kiox 500, it does not belong to the classic BES2 world, but to Bosch BES3 / Smart System.

What kind of solution are you looking for?

← Back to system selection

Bosch BES3 / Smart System

Bosch Smart System detected

At the Bosch Smart After system recognition, the magnet type is the most important factor. ABS, e-Shift, and the desired solution type should then be considered. Released for firmware of the Drive Unit to 19.55.0.

Bosch BES3 / Smart System Overview
Important NOTE A Bosch Smart The system is typically connected to the eBike Flow app, the new charging socket, and modern control units such as LED RemoteThe speed sensor can be identified by the system controller, Purion 200 or Kiox 300/500. It can operate classically with a spoke magnet or be implemented as a rim magnet on the valve or rim.

Does the bike have a rim magnet / valve magnet?

← Back to Smart System

BES3 without rim magnet

Bosch Smart System with classic sensor

In this variant, the Smart System Not with a rim magnet. The speed sensor is often located on the rear stay, sometimes also in the area of ​​the dropout or the brake disc.

Bosch BES3 Smart System with classic sensor position
Check special cases first If ABS or e-Shift is present, no general recommendation for a sensor, module, or chip should be made. In these cases, the digital smart system solution should be examined first.

Does the bike have ABS or e-Shift?

What kind of solution are you looking for?

← Back to Smart System

BES3 with rim magnet

Bosch Smart System detected with rim magnet

At the Bosch Smart In systems with a rim magnet, the magnet is usually located at the valve or in the rim area. Crucially, no traditional spoke magnet is visible. In some cases, a magnetic strip or an integrated magnetic solution may also be incorporated into the wheel.

Bosch BES3 Smart System with rim magnet on the valve
Check special cases first If ABS or e-Shift is present, no general recommendation for a sensor, module, or chip should be made. In these cases, the digital smart system solution should be examined first.

Does the bike have ABS or e-Shift?

What kind of solution are you looking for?

Result lists

Available Bosch tuning solutions

The following results show suitable product ranges according to Bosch system, sensor type, and desired solution type. For Bosch Gen1, the display type should also be checked; for Bosch Smart Wheel magnet, ABS and e-Shift are particularly important in this system.

← Back to Bosch BES1

BES1 Software

Bosch Gen1 Software Solutions

For compatible Bosch Gen1 / Classic Line A digital licensing solution may be suitable for some systems. Important: Bosch Gen1 with HMI display and Bosch systems with ABS are excluded. EBT Unlock Key except.

Before buying, check whether an Intuvia or HMI display is installed. If you're unsure, photos of the display, engine area, and charging port are helpful.

← Back to Bosch BES1

BES1 Box

Bosch Gen1 Box solutions

Box-type solutions are particularly relevant when the sensor position is easily accessible. The position of the speed sensor should be checked before purchasing.

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BES1 Dongle

Bosch Classic Line Dongle

Dongle solutions are pluggable hardware solutions for compatible Bosch devices. Classic Line Systems.

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BES1 Module

Bosch Gen1 Module / Chip

Modular solutions are suitable for users who prefer a traditional built-in solution. The specific Bosch system should be checked beforehand.

← Back to Bosch BES2

BES2 Software

Bosch BES2 Software Solutions

Browser-based licensing solutions for compatible Bosch BES1 and BES2 systems from Gen1 to Gen4. For the classic Bosch BES2, the focus here is particularly on the... EBT Unlock Key in the foreground.

Note: The EBT Unlock Key is not for Bosch Smart System / BES3 and not suitable for Bosch e-bikes with ABS. With Bosch Gen2 to Gen4, the displayed riding data may vary during use; for the most accurate display values, please check the section "BES2 correct display".

← Back to Bosch BES2

BES2 Box

Select Bosch BES2 Box according to sensor position

With Bosch BES2, the sensor position on the rear wheel is the most important factor for box solutions. Badass Box Variants differ in terms of classic chainstay sensor, sensor in the dropout or special G4 sensor shape.

The sensor position should be checked before purchasing. Box solutions are not automatically compatible with all Bosch systems.

← Back to Bosch BES2

BES2 Sensor

Bosch BES2 sensor solution

Sensor-based solutions replace or supplement the original speed sensor. According to the product page, the MBIQ-S is designed for Bosch Gen2–Gen4 and is not compatible with Bosch Smart System / BES3 compatible.

← Back to Bosch BES2

BES2 kit

Bosch BES2 kit solution

Kit solutions are aimed at expert users who prefer technical self-assembly.

← Back to Smart System

BES3 Special Case

Bosch Smart System with ABS or e-Shift

ABS and e-Shift are included in the Bosch Smart Special technical cases. No general chip, sensor, or box recommendation should be made in this context. The clearest recommendation is the EBTsmart Unlock Key, which works up to 32 km/h with correct display.

Note: The 32 km/h function is relevant when ABS is installed. The 45 km/h function is not recommended when ABS is installed.

← Back to BES3 without rim magnet

BES3 without rim magnet · Box

Box solution for Bosch Smart System without rim magnet

This selection applies to Bosch Smart System bikes without a rim magnet, if a Bosch Slim Sensor is present on the chainstay or in the dropout.

Important: Not for Bosch e-bikes with rim magnets and not for ABS/ABS Pro. If ABS or e-Shift is present, please select the special case path using the EBTsmart Unlock Key.

← Back to BES3 without rim magnet

BES3 without rim magnet · Sensor

Sensor solution without rim magnet

Sensor solution for Bosch Smart System without rim magnet. Not for use with rim magnets and not for use with ABS.

← Back to BES3 with rim magnet

BES3 with rim magnet

Selection for Bosch Smart System with rim magnet

Here you will find solutions for Bosch Smart System bikes with rim magnet. For ABS or e-Shift, please continue to only consider EBTsmart.

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Not included

Not included items

Not included are products not in stock, products permanently unavailable, extensions, tools, accessory bundles only, trackers and update services.

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