I put a BAC4000 upgraded controller on my Surron X! If you're looking at upgraded controllers for your ebike, 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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