Bosch Gen1 Tuning

Bosch Gen1 (Classic Line) Tuning


1 About Bosch Gen1 Engines

Bosch is the leading manufacturer of electric bike drive systems in Europe. The German company has a long history; in fact, it has already been established in 1886. It produces high-quality household appliances, electrical tools and industrial technology etc. Since a couple of years, Bosch started to develop and manufacture electric bike systems, too. In the meantime, Bosch electric bike drive systems are being used from more than 50 (!) electric bike brands like Bergamont, Bulls, Cannondale, Cube, Diamant, Flyer, Focus, Gazelle, Ghost, Giant, Grace, Haibike, Hercules, Kalkhoff, Kettler, Kreidler, KTM, Merida, Pegasus, Raleigh, Scott, Sinus, Univega, Winora and many more. The Bosch electric bicycle systems consist of the engine, an efficient battery with charger and the control unit with a little on-board computer. All components match each other perfectly. Nowadays, Bosch is one of the most important manufacturers of electric bike systems on the market.

2 Bosch Electric Bike Engines (Gen1 = Classic Line)

At the moment, Bosch produces 3 different electric bike drive systems: Besides the approved Classic Line there are the newer Active- and Performance-Line systems (Performance Line being the strongest one). There are drive systems for all target groups. By the way, all Bosch electric bike systems are equipped with mid-mounted engines.

At this point, we would like to present you the highly approved Bosch Classic+ Line system. The Bosch Classic Line system is strong and offers unobtrusively thrust as well as optimal engine support – this guarantees for driving pleasure in every situation. The system is equally suitable for commuters, leisure time cyclists, comfortable and sporty bikers etc.

The system comprises the following components:

a Drive Unit Classic+

The engine. We have to distinguish between the “Drive Unit Cruise” with motor support until 25 km/h and the “Drive Unit Speed” with support until 45 km/h. What both versions have in common: The Drive Unit is very robust, quiet and works discreet – but it always provides exactly the matching support. This is made possible by 3 sensors which capture torque, speed and cadence 200 times per minute! Due to its low centre of gravity the Bosch mid-mounted engine has a very good weight distribution which leads to a very stable driving behavior and high maneuverability.

Here are the most important data of the Bosch Drive Unit Cruise 25 km/h:

- Power: 250 Watts
- Max. Motor Support: 25 km/h
- Support: 30%-200% (gear hub) / 30%-250% (derailleur gears)
- Torque: 30-50 NM
- Weight: < 4 kg

b PowerPack Classic+

The accumulator of the Bosch Classic+ Line. You can choose between the “PowerPack 300” (300 Wh / 8,2 Ah) and the “PowerPack 400” (400 Wh / 11 Ah). Both accumulators are durable lithium-ion-batteries without memory-effect. It´s possible to choose between an accumulator placed at the frame or at the luggage carrier. Of course, a matching charger is included, too (Charger Classic+).

c Intuvia Classic+

This is the command centre of the Bosch Classic+ Line system, comprising of the on-board computer “Intuvia” and the separate control unit. Here you can choose one of the 5 support modes (Turbo, Sport, Tour, Eco or Off) or let yourself display the current speed etc.

3 Is it possible to optimize Bosch Gen1 Engines?

Yes! Nowadays, there are some highly efficient tuning tools which take away the 25 km/h speed limit and thereby make your Bosch Gen1 (Classic Line) engine much faster.

4 What Bosch Active & Performance Line Tuning Tools do exist?

At this point, we would like to present you 5 recommendable tuning tools for Bosch Classic Line electric bike systems:


JUM-PedThe JUM-Ped for Bosch Classic engines simply takes away the electric bikes speed limit. Even if the tuning is activated, the speed and the covered distance will be shown correctly. You don´t need any special technical skills or special tools to install and use the JUM-Ped. Furthermore, you can restore your electric bikes original condition whenever you want to. There are two versions of the JUM-Ped: One with plugs for the Intuvia display, and one version with plugs for the (older) HMI display. more

JUM-Ped with Intuvia Display JUM-Ped with HMI Display

B ASA B25.13

ASA eSpeedA tuning tool for Bosch Gen1 (Classic Line) engines which removes the 25 km/h speed limitation and allows you to reach very high speeds with full motor support (the maximum speed you can reach depends on the system you use). The special thing of the ASA device is that it does not influence the functionality of the HMI – this means, your display will always show the correct speed (even if the tuning is activated). Even additional features like mileage, max-speed and average speed will not be affected. If you install this tuning tool no cables will be damaged – this means, you can restore your electric bicycles original conditions without problems. Any additional stuff like Dongles, switches or cables aren´t necessary or visible. The electronics of the ASA Tuning Tool is microprocessor controlled. You can use the control elements of the HMI to program user-specific functions. Furthermore, the device has the ability to perform a self-calibration for different wheel sizes. The light function can be used for its original purpose, too. The ASA B25.13 tuning tool is compatible with the following Bosch Classic Line systems (support until 25 km/h): Year of manufacture 2011-2012 (HMI) / Year of manufacture 2013-2014 (Intuvia). This version of the ASA is not compatible with Bosch Active & Performance Line engines. more

ASAeSpeed B25.13

C Sx2 Dongle

Sx2 Dongle BoschSpeed Tuning for your Bosch Gen1 (Classic Line) electric bike. The easy-to-install Dongle doubles the engine support from 25 km/h to 50 km/h. This tuning tool simply has to be connected to your electric bikes speed sensor (“plug & drive”). This causes no changes in the engine electronics so that all Bosch driving modes will be fully retained. If you want to undo the tuning, simply pull off the Dongle. The Sx2 Dongle requires no extra battery and is 100% maintenance free. Of course, it is robust and fully outdoor-suitable, too. You need a special cable kit to install the Sx2 Dongle. If you want to, you can order the optional cable kit with “power switch” – the switch enables you to turn the Dongle on or off with the light switch of your Bosch Intuvia display. The Sx2 Dongle tuning tool is available for the following wheel sizes: 20” / 26” / 27,5” / 28” / 29”. more

Sx2 Dongle for Bosch

D Badass Box 4 Bosch

Badassebikes Box for BoschThe Badassebikes Chiptuning Box shifts the speed limit of the Bosch (Gen1) Classic Line engine from 25 km/h to more than 50 km/h. This works as follows: From a speed of approx. 16 km/h the device will halve the transmitted speed which enables motor support to more than 50 km/h. The Box itself only has the size of a matchbox and it can be installed very quick and easy. It simply has to be attached to the Bosch speed sensor. If you want to undo the tuning and drive legally on public roads again, simply pull off the Box. Shift the magnet back into its original position, and your electric bike is restored to its original condition. more

Badass Box 4 for Bosch

E Tuning Speedchip / Configurable

SpeedChipThis is a tuning module for Bosch Classic Line and Classic+ engines. The tuning Speedchip is equipped with a micro USB port which makes it possible to configure the device via your PC. This allows you, for example, to set the maximum engine support to an individual level from 15 to 75 km/h (about 46 mph). The Speedchip can be conveniently switched on or off via the key combination “Down-Up-Down-Up”, even while you are on the road. Your Bosch display will still show the correct speed and kilometres. By the way, the Speedchip does not have to be uninstalled if you want to carry out Bosch system updates. Important: According to the manufacturer, this tuning tool should be installed by a specialist. more

SpeedChip for Bosch

F sIMPLEk Stick ECOplus

sIMPLEk Eco Plus für BoschThis tuning tool is something very special: It does not remove the 25 km/h limit of the engine support, but instead increases the range up to 20 percent! The operating principle: If the built-in stick detects that a constant speed is being driven, it slowly shuts down the motor support. After a certain period of time or if the speed falls below a certain limit, the support is gradually switched on again. The stick can optionally be attached directly to the handlebars so that it can be easily inserted or removed. Please note that this tool is delivered as a kit and must be assembled by the customer. This is very simple, but a soldering iron must be used. The installation at the bike itself is absolutely uncomplicated.

sIMPLEk Stick ECOplus

G sIMPLEk Stick Pro for Bosch

sIMPLEk Stick Pro BoschThis is a tuning dongle that completely removes the speed limitation of Bosch E Bikes. Since it is a tool with USB connection, all tuning-relevant parts can be removed within seconds. The real speed remains readable, but via the second digit and the decimal place of the speed display. Please note that this is the "Pro" version of the sIMPLEk stick - that means this dongle is delivered as a ready-to-use product, not as a kit. Compatible with Bosch Classic, Active (Plus) & Performance Line (CX). Made in Germany.

sIMPLEk Stick Pro for Bosch

H sIMPLEk for Bosch Gen2

sIMPLEk Kit BoschThis tuning tool removes the speed limit completely. Please note, however, that sIMPLEk is a kit that has to be assembled by the customer himself using a soldering iron. So a little bit of DIY is needed here. But the installation of the assembled module itself is absolutely uncomplicated. After the installation the tuning can simply be activated by switching off and on the E Bike within 10 seconds after starting it. Even if the tuning is activated, the actual speed will still be displayed - but via the second digit and the decimal place of the electric bike´s speed display (14.5 km/h on the display would correspond to a real speed of 45 km/h etc.). After installation, sIMPLEk is no longer visible from the outside. Suitable for all Bosch Classic, Active, Performance & CX Line drives, optionally with HMI, NYON or PURION control unit. This tuning kit is absolutely recommendable for all customers with a little bit of manual dexterity, especially due to the low price.

sIMPLEk for Bosch Gen2

I sIMPLEk Pro for Bosch

sIMPLEk Pro BoschThe low-priced sIMPLEk tuning module in the "Pro" variant - this means that this module is delivered as a finished product and does not have to be assembled (unlike the previous sIMPLEk tools). This tool completely removes the speed limit of Bosch E Bikes - nothing more, nothing less. The current speed remains readable, but via the second digit and the decimal place of the speed display (a display of 13.4 km/h corresponds to 34 km/h etc.). An advantage is the simple installation; after mounting the tuning module is not visible from the outside. Compatible with Classic, Active (Plus) & Performance Line (CX). Made in Germany.

sIMPLEk Pro for Bosch

J sIMPLEk Stick for Bosch

sIMPLEk Stick BoschThe sIMPLEk Stick is a tuning dongle to assemble yourself. The speed limit of your Bosch E Bike drive system is completely removed. This is the first dongle where the speed can still be read correctly, albeit via the second digit and the decimal place in the display. After installing the connecting cable, the tuning can be switched on and off at any time by plugging in or unplugging the dongle. The assembly of the dongle is very simple, but the use of a soldering iron is necessary. Compatible with Bosch Classic, Active, Performance Line & Performance Line CX. Made in Germany.

sIMPLEk Stick for Bosch