• Speedbox 3.3 for Giant 1
  • Speedbox 3.3 for Giant 2
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Speedbox 3.3 Tuning Kit for Giant Syncdrive Pro2 & Sport2 eBikes

Speedbox 3.3 Tuning Kit for Giant Syncdrive Pro2 & Sport2 eBikes

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£179.00GBP
£179.00GBP
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Tax included. Shipping calculated at checkout.
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Enjoy 30 days of free returns, with less than 1% of riders asking for their money back — plus a full warranty on all tuning kits.

Unlock the full potential of your Giant eBike with this performance tuning kit. Designed for SyncDrive Pro2 (85nm) or Sport2 (75nm) motors. It removes the factory speed limit, providing pedal assist up to 31mph (50km/h) for a faster rides. Compatible with the latest Giant software, enjoy accurate speed readings, on/off activation plus a customisable max speed. 

Looking for a tuning kit that pairs with your phone? Don't miss this premium bluetooth version

You can access a full install video for this kit here. Please note, it's not compatible with older Giant models - shop here

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

Product Benefits

Why choose this product:

  • Fitted to the motor in minutes for a true plug & ride experience
  • Increase the factory speed limit of the bike up to 28mph (can be adjusted)
  • 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

Shipping & Returns

We ship fast and free to the UK with Royal Mail. Shipping rates for the USA, Australia & Canada are shown clearly at checkout – no hidden fees

🇺🇸 We cover all US import paperwork for you and ensure no surprise bills on delivery. Just one flat fee of $39 USD

🇦🇺We cover all AU import paperwork for you and ensure no surprise bills on delivery. Just one flat fee of $39 AUD

🇨🇦 Orders to Canada may incur customs charges on delivery

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

Compatibility

  • Works with any eBike fitted with a Giant Syncdrive Pro2 (85nm) or Syncdrive Sport2 (75nm) motors only
  • Only works with these two motors, contact us if you're unsure what motor your ebike has

Warranty

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

To claim under warranty, simply contact us here

Software 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.

View full details

Customer Reviews

Based on 21 reviews
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90.0
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Chris Heath

Great! Customer service was the best also. Thanks!

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George D.

Excellent , it’s taken no more than half hour to fit and works a dream , video on YouTube helped if any one gets stuck

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Gareth B.

Very easy to fit, fast response on the emails. Very happy

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Gary S.

The team were really helpful both pre purchase and after.
The unit I had was amazing and installation was a breeze.
Cant recommend this seller highly enough.

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Loui W.

Easy to get it working. Getting it in was a hassle but once it was in all has been good so far. I didn’t know if this one would have fitted my bike because the motors says sync drive 85nm and not sync drive 2 but turns out it does

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