SpeedBox 1.4 Tuning for EBikes with BOSCH SX (Smart System + Rim Magnet)

SpeedBox 1.4 for Bosch Performance Line SX - Tuning for Gen 4 Motors

Increase Your E-bike Speed - Simple Installation for Performance Line SX

SpeedBox 1.4 is the perfect solution for riders with Bosch Performance Line SX e-bikes who want to get maximum performance from their bike. This tuning module removes the speed limitation and allows you to ride faster than the standard 25 km/h limit.

What Problem Does SpeedBox 1.4 Solve?

Many e-bike riders with Performance Line SX find the standard 25 km/h limit too restrictive, especially during training or longer rides. SpeedBox 1.4 solves this by removing the speed limitation, allowing you to ride up to 35 km/h with motor assistance.

Who Is This Product For?

• MTB riders who want higher speeds on trails and roads
• Training cyclists who want to increase their workout intensity
• Commuters who want to reach destinations faster with Performance Line SX
• E-bike enthusiasts who want to maximize their SX motor's performance

Benefits of SpeedBox 1.4

• Designed specifically for Performance Line SX - Perfect fit for BDU3142 and BDU3143 motors
• Simple installation - Mounted with 2 top screws, no magnet positioning
• Original connectors - Safe and reliable connection
• Quick activation/deactivation - Switch between normal and tuned mode easily
• Correct distance measurement - After countdown process
• Professional support - Help with installation when needed

Compatibility

Compatible with:

• Bosch Performance Line SX 4th Generation
• Motor models BDU3142
• Motor models BDU3143
• E-bikes with valve magnet (Bosch Rim Magnet)
• Latest Bosch software version

NOT compatible with:

• Standard magnet
• ABS system
• Other motor types than Performance Line SX
• SpeedBox App

Technical Specifications

How SpeedBox 1.4 Works

Activating the Tuning:

Hold down the "-" button to activate the WALK function. The display shows 3.5 km/h, meaning you can now ride up to 35 km/h with motor assistance.

Deactivating the Tuning:

Hold down the "-" button again. The display shows 2.5 km/h, meaning the speed limit is back to 25 km/h.

Alternative Method:

For bikes without WALK function, press - + - + to activate/deactivate the tuning.

Speed Limit Adjustment:

You can set the maximum speed limit by switching modes from TURBO three levels down and then three levels up: eMTB - TOUR+ - ECO - TOUR+ - eMTB - TURBO.

Comparison with Competitors

In the market, there are also products like PearTune MSO, Speedfun, and other tuning devices. SpeedBox 1.4 stands out with:

• Specialized design for Performance Line SX - Developed specifically for SX motors
• Easier installation - Mounted with just 2 screws
• Better compatibility - Works with the latest SX models
• Professional support - Help and instructions available
• Reliable function - Fewer error codes and problems

Installation

Installation is simple thanks to original connectors and easy mounting with 2 top screws. Detailed instructions and videos are included. Important: Ride at least 10 km on a new bike before activating the tuning.

Note: Connect the male-female connectors in the direction of the lock. Do not rotate the connectors during connection!

Frequently Asked Questions (FAQ)

Is SpeedBox 1.4 legal to use?

SpeedBox 1.4 is intended for use on private property only. On public roads, the 25 km/h speed limit still applies according to EU legislation.

Does SpeedBox 1.4 work with my Performance Line SX?

SpeedBox 1.4 is designed for Performance Line SX 4th generation, motor models BDU3142 and BDU3143. Check your motor model before purchase.

Does tuning affect my bike warranty?

Tuning may affect the warranty. Contact your dealer for more information about warranty terms.

How do I install SpeedBox 1.4?

The device is mounted with 2 top screws and connected with original connectors. Detailed instructions are included.

What's the difference between SpeedBox 1.4 and SpeedBox 1.4 B.Tuning?

SpeedBox 1.4 B.Tuning allows you to see real speed and riding information via the SpeedBox App on your phone.

Can I use the SpeedBox App with this version?

No, this version is not compatible with the SpeedBox App. For app functionality, choose SpeedBox 1.4 B.Tuning.

What happens if I forget to wait for the countdown process?

It's important to let the bike display 0.0 km/h after your ride before turning it off. This ensures correct distance measurement.

Can I easily remove the tuning?

Yes, SpeedBox 1.4 can be easily removed without leaving traces. The bike then functions as normal.

What tools do I need for installation?

Basic tools for mounting 2 screws. Specific instructions are included for your bike model.

Check your e-bike type and motor space before purchasing the product!