SpeedBox 1.6 for Bosch (Smart System Gen.5 + Rim Magnet)
- For the Performance Line CX 5th Generation
- Removes the 25 km/h speed restriction
- Simplified installation
SpeedBox 1.6 for Bosch (Smart System Gen.5 + Rim Magnet) removes your e-bike’s speed limiter, unlocking full motor potential while keeping installation simple. Designed for the latest Bosch Performance Line CX Gen.5 motor, it delivers smooth power support beyond standard limits. With intuitive activation, clean integration, and precision-built reliability, this tuning module lets your Bosch system perform at its best.
Key Features and Benefits:
- Bosch Gen.5 compatibility: Purpose-built for the latest Bosch Performance Line CX motor, ensuring seamless integration and stable performance across current Smart System software. This delivers consistent and reliable tuning support.
- Rim Magnet setup: Works directly with the Bosch Rim Magnet system, removing the need for extra sensors or simulators. This simplifies installation and keeps your e-bike setup neat and factory-clean.
- Speed limiter suppression: Overrides the 25 km/h limit, allowing speeds up to 35 km/h or more. This maximises motor capability, giving unrestricted performance for training or off-road use.
- WALK function activation: Enables tuning activation and deactivation through the WALK mode or + – + – button sequence. This gives quick control over when tuning is active, ensuring safe use on or off public roads.
- Display integration: Although real-time speed isn’t shown during operation, the system updates distance data after a short countdown. This ensures total ride distance remains accurate for maintenance or logging.
- Clear tuning indication: Displays an on-screen speed signal (3.5 / 2.5 km/h) when active or inactive. This visual feedback confirms system status, reducing the chance of accidental operation during rides.
SpeedBox 1.6 gives riders greater freedom from restrictive limits, allowing the Bosch Gen.5 motor to deliver its full torque potential. The direct Rim Magnet compatibility, refined installation process, and reliable activation controls make it ideal for riders wanting precise, dependable performance enhancement without extra setup steps.
Take control of your e-bike’s performance with SpeedBox 1.6. Built for Bosch’s newest generation, it offers a powerful yet simple way to unlock unrestricted potential.
Compatible with:
- Performance Line CX - 5th Generation
- E-bikes that have a magnet attached to a valve (Bosch Rim Magnet)
- The current Bosch software version
Not compatible with:
- Standard magnet
- ABS system
- SpeedBox App
- Motors of 4th generation
| Brand | SpeedBox |
| MPN | SB16-B |
Our Payment Options
Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.
Finance Options
In order to get the kit you want, when you need it, we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance, Klarna and Clearpay. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Klarna is unregulated credit. Clearpay is unregulated credit, use responsibly, T&Cs & late fees apply.
Our Finance Providers
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D.T.(Automotives)Limited trading as Tweeks Cycles offer interest free and interest-bearing credit on purchases £300 and over which is provided by V12 Retail Finance.
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We also offer Klarna, pay now, pay in 30 days or pay in 3 equal instalments.
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We also offer Clearpay pay in 4 instalments.
UK Mainland Delivery Prices
| Delivery Type | Cost | Estimated Delivery Time |
| Standard Delivery for orders under £49.99 | from £1.33 | 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Standard Delivery for orders over £49.99 | Free | |
| Bike Delivery | Free | 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays) |
| Express Delivery | from £1.68 | 1-2 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Special Delivery | from £12.54 | For any next working day delivery order before 4.30pm Monday to Thursday. For any weekend delivery order before 4.30pm Friday |
* Bike Delivery Info
A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.
For international shipping please visit our delivery page.
For information about returning an item please visit our returns page.