I put a BAC4000 upgraded controller on my Surron X! If you're looking at upgraded controllers for your e-bike, this is the video for you.

In this video:
- Why the stock surron controller isn't the best...
- How to install a BAC4000 or BAC8000 controller on your surron
- BAC4000 test ride and reaction (wheelies, settings, regen braking, etc.)
- BAC4000 review after testing the controller!
- More wheelies

Green Line Engineering (GLE) also gave me a discount code if you're looking to get one of their controllers: 5% off with coupon code LOGAN5OFF

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