ASI BAC4000 Power Upgrade Controller Kit for Sur Ron Light Bee
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ASI BAC4000 Power Upgrade Controller Kit for Sur Ron Light Bee
Description
Description
Stage 1 ASI BAC4000 Controller Kit for Sur Ron
The EVFREAKS Stage 1 ASI BAC4000 Controller Kit will take your Sur-Ron Light Bee to the next level. It's made for riders who desire more power, quicker throttle response, and smoother, more controlled acceleration. This upgrade changes your ride into a high-performance machine, whether you're on trails, journeying, or pushing the limits on the weekend.
This kit is pre-programmed by EVFREAKS and is geared up to use right out of the box. It can give you up to 15kW of peak power and 420 phase amps, which is an enormous boost over the stock setup. It works with both 60V and 72V battery systems, meaning you can customize the experience to fit your build and style.
Important attributes:
- Flexible Voltage Compatibility: Designed to function flawlessly with 72V aftermarket upgrades or 60V OEM batteries.
- Gains in Performance:
- With the stock 60v battery, power and torque are increased by 50%.The top speed was raised by +15mph(22km/h)
- When combined with a 72v system, up to 120km/h (75 mph).
- Full Integration of Displays :
- One fixed power mode without a display( meaning controller will have only 1 power mode - the one it's set to).
- The EggRider V2 Display.
- The EggRider C1 Display.
What is Included:
- The ASI BAC4000 Controller Unit is potted for durability and completely waterproof.
- An in-house-built custom IP65 wiring loom with a direct throttle connection for a neater setup.
- Thumb Throttle with Regenerative Braking: This feature locks the back wheel while decelerating, recharges the battery, and adds motor braking.
- Mounting Kit: Top and bottom brackets made of premium PETG that are 3D printed for an ideal OEM.
Why Choose EVFREAKS ASI Controller Kit?
Because we live this, we don't just sell upgrades. We test, fine-tune, and build each controller based on actual rider feedback. We in-house pre-program everything to ensure that there is no guesswork or stress and that everything can be simply plug-and-play. Do you need assistance? In addition to free remote setup sessions if desired, you receive direct rider-to-rider support.
We build what we would ride at EVFREAKS, and we stand behind it. Support and Performance. No fluff. Just real results.
Shipping & delivery
Shipping & delivery
We usually dispatch orders within 1 to 3 working days after purchase. If an item is on pre order, this will be clearly stated on the product page before checkout, along with the lead time. For example, our 72V and 81V batteries are custom made and take 2 to 3 weeks to build. All other items such as service parts, CNC parts, and controllers are in stock.
We ship worldwide, to every country.
Returns & refunds
Returns & refunds
If you need to return an item, we make it straightforward.
- Contact us first with your order number and the item you want to return. If the item is faulty or damaged, send a couple of clear photos so we can help faster.
- We will confirm eligibility based on our Returns and Refunds Policy and send you the return instructions.
- Pack the item securely in its original condition with all accessories, packaging, and paperwork.
- Send it back using a tracked service and keep your proof of postage.
Once it arrives, we will check it and move things along quickly.
Let customers speak for us
what I can say this controller is really a game changer I had couple different setups over the years, im running ebmx xlb-60 motor now with 81v battery and this is so far the most smoothest controller i ever had. guys helped me big time helping to set it up all the settings!
High quality kit and detailed instruction manual
Havent installed yet but arrived in a week time
good quality kit, running with ewatt 81v battery and ebmx xlb-60 motor pushing 1000 phase and 40kw - 95 mph gps top speed the thing is spaceship
wheelie mode is something else, works with my stock bypassed battery, looking to upgrade soon !
I had the problem with my bac8000 controller and have tried all different apps, different tuners and different displays… wish i heard about these guys earlier, they not only made my bike work again but as well retuned it all and now it’s smooth like never before, feels like completely different machine! 👌👌👌💯
Much better than my x9000 . Throttle is so smooth and wheelie mode is insane. Thanks guys!
One of the best purchases I have ever made and one of the best customer services I have received. Well happy! Purchased it last month. Installation was simple, and after guys from evfreaks helped me to get it all programmed through the face time
The lads down at evf looked after me got a nice bac4 k with a bypass loads of cnc aftermarket parts haad me bike back within days no messin about bike was keeping up with 72v 65 mph in seconds alta throttle response was sick bee throwing the ultra stop slacking an get ye bikes booked in
What else I can say - well happy with the kit. I got it for my sons birthday, shipping was quick and installation was easy enough. Once installed we got it programmed one of evf engineers remotely in less than 30mins!
Excellent product But have not received my chain conversion
Great fit great look great service
very good stuff
I ordered the tc500 then got a message from evfreaks that it was out of stock and would I like to upgrade to tc1000 with a discount for the mistake so I did an it is wicked , so thanks ev freaks very happy with my purchase
A nice bit of kit
What customers think about the store
Specializes in electric bike performance upgrades with high-quality parts. Customers praise exceptional customer service, remote programming support, fast delivery, and expert installation guidance. Known for smooth controllers, power kits, and quality CNC com...
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