• Speedbox 3.1 B.Tuning Bluetooth chip for Brose Specialized and Brose SRAM e-bikes
  • Speedbox 3.1 B.Tuning module installation overview — Brose Specialized / SRAM
  • Speedbox 3.1 B.Tuning Brose connection detail — close-up photo
  • Speedbox 3.1 B.Tuning module fitted to Brose Specialized motor
  • Speedbox 3.1 B.Tuning Bluetooth app speed control screen for Brose e-bikes
  • Speedbox 3.1 B.Tuning Brose Specialized motor connection diagram
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Speedbox 3.1 B.Tuning Brose Specialized/SRAM eBike Tuning Kit | Premium Bluetooth Version

Speedbox 3.1 B.Tuning Brose Specialized/SRAM eBike Tuning Kit | Premium Bluetooth Version

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£256
£256
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  • UK stock, tracked worldwide delivery
  • 30-day returns, Lifetime Warranty

  • DIY Install with basic tools

    Plugs into your existing wiring, nothing permanent. Video guide included.

  • Removes 15.5mph limit

    Switch between standard and tuned mode at any time.

  • Not sure it fits?

    Check your bike in our Kit Finder → or send us your make, model and year.

  • Real UK support

    A real person helps by email or WhatsApp if you get stuck.

Designed for riders who want to get more speed from their Brose/SRAM powered eBike. This ebike tuning kit removes the 15mph or 20mph factory speed limit, allowing you to enjoy speeds up to 28mph (45kmh). Once fitted, this Speedbox can be switched on/off easily using the handlebar controls. You also have the option to set a custom max speed if you need to. 

With this Premium Bluetooth version, you can control speed, monitor rides, and easily adjust settings through the Speedbox app.

Compatible with all Specialized eBike models (excluding Gen4 Levo & SL versions) and eBikes equipped with Brose SRAM, Brose S-Mag, S, T motors.

Installation is fairly quick and simple with just a few basic tools needed. Once fitted, it's hidden neatly inside the motor cover resulting in a clean, OEM style finish. You can see a full installation video here

✅ Removes factory speed limit completely
✅ Plug & ride — no specialist tools
✅ Stealth install, completely hidden
✅ Accurate speed & distance
✅ Lifetime warranty included

⚠️ For off-road use only. Not legal on public roads. Read full legal disclaimer.

Will this kit work with my bike?

  • Works with any ebike fitted with Brose Specialized, Brose S, Brose T, and Brose S-MAG motors. Included the popular 2.2/2.0/2.1 motors found on Turbo Levos.
  • Does not work with Specialized SL models

How long does it take to fit?

We've rated this as an Easy, plug & ride installation

What is your shipping & returns policy?

🇬🇧 UK

Free delivery to the UK with Royal Mail  Tracked 48. Tracked 24 is available as a paid option.

🇺🇸 USA

Free shipping on all orders, takes 5-7 business days.

Your parcel is exported from the UK and handed to USPS for final delivery.

All tariff charges and import paperwork is handled by us. No surprise customs bills on arrival.

🇦🇺 Australia

Free shipping on all orders, takes 7 business days. WA takes 14 days.

Parcels are delivered by Australia Post once they reach your local network.

We manage all import paperwork, so you won’t receive any unexpected fees.

🇨🇦 Canada

Shipped from the UK with full tracking via Royal Mail. Delivered to you by Canada post.

Canadian orders are subject to import duties or customs charges on arrival.

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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

What's covered by the Lifetime Warranty?

All Speedbox products come with a lifetime warranty. In the unlikely event your product develops a fault or defect. We will replace it for free. 

To claim under warranty, simply contact us here

eBike firmware Updates

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.

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