Yamaha PW-X3, PW-S2 & PW-XM motors (incl. YDX Moro 07)Not for PW-X, PW-X2 or older Yamaha motors, or Giant SyncDrive.
Speedbox 3.3 B.Tuning for Yamaha PW-X3 / PW-S2 eBike Tuning Kit
Speedbox 3.3 B.Tuning for Yamaha PW-X3 / PW-S2 eBike Tuning Kit
In stock
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- UK stock, tracked worldwide delivery
- 30-day returns, Lifetime Warranty
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DIY Install
Plugs into your existing wiring, nothing permanent. Video guide included.
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Removes 15.5mph limit
Switch between standard and tuned mode at any time.
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Not sure it fits?
Check your bike in our Kit Finder → or send us your make, model and year.
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Real UK support
A real person helps by email or WhatsApp if you get stuck.
Unlock the full potential of your Yamaha powered eBike with this eBike tuning kit. Works seamlessly with any Yamaha PW-X3, PW-S2 or PW-XM motor. It removes the 15mph or 20mph factory speed limit, allowing you to enjoy faster, unrestricted rides. Once fitted, it can be switched on or off at anytime using the handlebar controls.
With this premium bluetooth version, you can control the kit using your phone as well as track rides in real time. If your bike has an Interface X controller without speed readings, we highly recommend this version.
Click here to access a full install video for this kit. Please note, this product is not compatible with;
- Yamaha PW-X / PW-X2 / PW-SE / PW-ST / PW-TE / PW-CE motors (shop 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.

Frequently Asked Questions
Will this work with my eBike?
- Works with any eBike fitted with a Yamaha PW-X3, PW-S2, PW-XM Motors
- Also works with Yamaha YDX Moro 07 & Moro 05
- Not compatible with any Giant brand eBikes
Why choose this tuning kit
Here's why riders love this tuning kit
- Premium bluetooth version, control your Speedbox, set a custom max speed & track your rides all via the easy to use Speedbox app
- Fitted to the motor in minutes for a true plug & ride experience
- Completely removes 15mph restriction, also works with US spec ebikes with 20mph limit
- Full use of the display, with accurate speed/distance in kmh or mph
- All ride modes work exactly the same, including ‘walk mode’
- Lifetime warranty with all Speedbox tuning kits
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
How to avoid error codes
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
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
A note on 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.
was going to rid of my new emtb after just a week due to the 15mph speed restriction, then bought and fitted speedbox and now love my emtb, very very pleased with this product
Great product does what it says on the tin .my partner and friends ride racing bikes and this product keeps me in the pack instead of trying to slog through sand 😂🚴🏻🚴🏻
Very happy with my purchase, really easy to fit. it’s made such a difference, I would highly recommend
Excellent. Easy to fit
Install was simple but really don’t notice much of a difference the app works.. says I got to 28mph but you got to work for it
Installation Guide:
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