2017–2022 Giant models onlyNot for 2023+ motors (Pro 2, Sport 2, Pro 3, Pro 3x)
Speedbox 3.2 eBike Tuning Kit for Giant Syncdrive Pro / Core / Sport / Life
Speedbox 3.2 eBike Tuning Kit for Giant Syncdrive Pro / Core / Sport / Life
In stock & ready to ship
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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 Giant eBike with this performance tuning kit. Designed for SyncDrive Pro, Core, Life, and Sport motors (2017-2022 models), it removes the factory speed limit, providing pedal assist up to 31mph (50km/h) for a faster, more exhilarating ride. Once fitted, enjoy accurate speed readings, on/off activation plus a customisable max speed.
Please note, not compatible with Giant models from 2023 onwards (Syncdrive Pro2 85nm, Pro3 100nm or Sport2 75nm motors) - shop here
✅ Removes factory speed limit completely
✅ 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 Giant eBike fitted with a Syncdrive Sport (70nm), Pro (80nm), Core (50nm) & Life (60nm) motors.
- Not compatible with Giant eBikes with a Syncdrive Pro2 (85nm) or Sport2 (75nm) motors
Why choose this tuning kit
Here's why riders love this tuning kit
- Plug & ride derestriction once fitted
- It removes the 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.
Amazing product that has massively improved the off-road experience on my bike - really great that it defaults to standard road mode so you don't accidentally break any rules. I'm not a bicycle mechanic, but I decided to fit it myself - although it took time and patience to fit, it was well worth it and the support team were really helpful. Definitely recommend the product and the supplier.
Brilliant, husband is made up with it.
Absolutely amazing. Made riding a lot more enjoyable.
Let’s be honest 15mph is way too slow for the road , bought the chip and the bike is alive , customer support from the guys is amazin , emails answered quickly regarding tech support , fully recommend them .
Installed this on a GIANT TALON, it was a bit of a pain to install because of how the wires are located. Excellent device when in use
Installation Guide:
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