SpeedFun Furious eBike Tuning Kit for Bosch Rim Magnet Performance Line CX - Gen5

We ship fast and free to the UK, USA, Australia & Canada. All orders are fully tracked and dispatched from our UK warehouse.

✅ Tariff-free shipping to the USA & Australia.

❌ Note: Orders to Canada may incur customs charges. Free shipping doesn’t apply to EU/EEA countries.

Changed your mind? No problem. We offer 30-day returns — no hassle, no stress.

If something’s not right, we’ll sort it.

🔍 See full Shipping & Returns info here

• eBikes fitted with a Rim Magnet sensor (located on rear wheel valve)
• The eBike motor must be a Performance Line CX (gen4)
• We have successful installs on these bikes (others tbc); Focus Jam2, Santa Cruz Vala, Trek Rail & Powerfly, Cube Stereo ONE55, Cannondale Moterra, Canyon Strive Underdog, Haibike CF11
• Unfortunately this kit is not compatible with 2025 Mondraker Crafty Carbons

Here's why riders love this tuning kit

• Once fitted, enjoy a complete derestriction
• Permanent tuning, no activation required
• Tested on latest Bosch update
• 1-year warranty included

Unfortunately no tuning kits are 100% guaranteed. You can reduce the risk of triggering an error code by following these simple steps:

If your eBike uses a smartphone app, switch off automatic updates before installing your tuning kit

Remove your tuning kit before doing any software updates

If possible, remove your battery before starting your installation

Keep your average speed below 50km/h

Existing eBike Warranty:
The use of any tuning products may void the warranty of your eBike. We take no responsibility for any damages resulting from the use of any of our products.

eBike Laws:
Electric bikes equipped with tuning devices are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with tuning products can be used exclusively on private property and entirely at one’s own risk. Under the EU's EN15194 regulation it is illegal to ride your eBike on public roads/cycle paths with a tuning device fitted. 

By purchasing a device from eBike tuner ltd you agree that eBike tuner ltd cannot be held liable for any damage, injury, fine or cost to you, your eBike or anyone else involved in your particular incident.

In the unlikely event your product develops a fault or defect. We will replace it under warranty. This product comes with a 1-year warranty.

To claim under warranty, simply contact us here and our team will assist you

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.