BadassBox 5 Tuning Kit for Bosch Rim Magnet eBikes - Gen4 CX (Preorder, ships 24th April)

Name: BadassBox 5 Tuning Kit for Bosch Rim Magnet eBikes - Gen4 CX (Preorder, ships 24th April)
Brand: BadassBox
SKU: 100405
Price: 199.0 GBP
Availability: OutOfStock

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£199.00GBP

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Product variants

This product is on preorder, we expect to ship orders from 24th April

New for Spring 2025. This kit is built specifically for eBikes fitted with a Bosch Gen4 CX motor and Rim Magnet sensor (mounted on the rear wheel valve). It removes the 15mph or 20mph factory speed limit, giving you the freedom to ride faster and further without restriction.

Installation is simple—there’s no need to remove the motor or touch any electrics. Just clip it on and go.

You can also pair it with your smartphone using the Boost Buddy app (free for iOS & Android). Within the app you can;

• Choose your tuning mode (Always On / Always Off / Only When Paired)

• View accurate speed and distance data during your ride

Note: As this tuning kit operates externally, your bike’s onboard display won’t show accurate speed or distance once fitted.

Product Benefits

Why choose this product:

Easy to install, no specialist tools or skills required
Permanently overrides 25kmh factory speed limit once fitted
AAA battery for range in excess of 7,000km
Designed & manufactured in Germany
Boost Buddy App for your correct speed on iOS and Android
30 day money-back guarantee

Compatibility

eBikes fitted with a Bosch Performance Line CX Gen4 motor only
eBike must also have a Rim Magnet sensor (located on rear wheel valve)

Firmware Updates & Tuning Compatibility

Updating your eBike’s motor firmware may block or disable your tuning kit.

We recommend avoiding firmware updates—especially through service centres—unless absolutely necessary. Most updates are optional, and a working eBike doesn’t usually need one.

Keep in mind:

✔ Firmware upgrades can remove tuning compatibility

✔ Tuning is only guaranteed to work with the firmware version available at time of purchase

✔ A blocked tuning kit due to a firmware update is not covered under warranty

If you’re unsure, reach out before updating. We’re here to help you keep your ride running exactly how you like it.

Shipping & Returns

We offer free Tracked Delivery within the UK (3-5 working days). Express shipping is available at checkout if needed.

We also offer free tracking shipping to the US, AU and other international markets. Shipping time does depend on your location but usually takes around 7 business days.

This product comes with a 30 day money back guarantee for added peace of mind

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BadassBox vs Other Brands

Discover why this tuning kit is right for you

Easy to fit, no specialist tools needed

Pairs with Boost Buddy App

Customise to suit your needs

30 Day Money Back Guarantee

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BadassBox 5 Tuning Kit for Bosch Rim Magnet eBikes - Gen4 CX (Preorder, ships 24th April)