Arc Street - 350W - 520WH Electric Bike Kit

The street legal electric bike kit from Arc offers you all of the important features as standard. From the massive capacity battery, backed up by high quality Samsung cells - To the incredibly strict quality control and one of the best warranties around. They do not mess about.

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Samsung Battery Technology

Lithium Ion Samsung Battery

It is no secret that Samsung make some of the best 18650 lithium cells on the market. These batteries, manufactured to be super stable, are one of the most reliable battery cells on the market. Every cell goes through a strict testing procedure during the manufacturing process, which results in one of the lowest return rates on the market. We love these batteries and carried out a lot of extended test on multiple brands, ultimately deciding on the rock solid Samsung 18650’s

Arc Electric Bike Kit - Lithium Battery

High Capacity

The 520Wh battery that comes with the Arc street legal conversion kit has a deceptively small footprint. However, inside the case packs a punch! The configuration we have created results in a massive range that far exceeds the majority of kits on the market – sometimes by more than double! Yes, we could offer a kit with lower range for less money, but that is not our mission. We want only want to offer the best, with no compromises and an awesome price, so you can get down to enjoying your electric bike experience.

Hand Laced Electric Motors

A lot of electric bike kit ‘manufacturers’ on the market today seem to ignore the fact that the way the wheel is built is just as important as everything else, maybe even more. The correct gauge spoke needs to be selected and they have to be laced into the hub with care. Being the part of the kit that transfers all of that power to the ground, the last thing we want is to put you at risk. With spoke safety taken care of, we got down to developing a near bullet proof, internally geared motor that we can almost guarantee will not fail.

The Brains

The controller for this street legal conversion kit has been over spec’d. This adds a little more protection against anything going wrong. Rated to 36V and a maximum current of 18A means this controller can handle up to 600W, almost twice as much as the peak output for a road legal kit. We know what goes into a reliable electric bike controller, so we have used six of the highly regarded STP80NF70 MOSFETs and protected all the internal circuitry to an IP65 rating. This will keep it all dry and dust free for its lifetime of outdoor use.

What comes with this electric bike kit

Nothing looks worse than a needlessly bulky battery cradle. So, we went to work designing a super sleek, low profile battery cradle that blends in with the kit seamlessly. Easily mounts to your water bottle holder bolts for a secure fit.

Do you love your brakes? So do we! We know that you do not want to replace your brake levers with some cheap brand that just does not feel the same; so don’t. These little cables don’t seem like much, but they will turn any brake lever into a custom e-brake system in minutes.

Twist or thumb? It is completely your choice. The throttle you use should come down to a matter of preference, not whatever you are stuck with. We have thrown in both types of throttles commonly used. Don’t want to use a throttle or not allowed due to restrictions in your area of the globe? You are not required to install one to use this kit. Instead, you can operate it using pedal assist only.

What can we say? What good is in electric bike conversion kit without a battery charger? Fast charge your battery in four to six hours knowing that your battery is protected against overcharging. Preventing a potentially catastrophic incident. Plug it in, and don’t worry about it.

Additional Info

Additional Info


Designation Street Legal
Nominal Power 350W
Peak Power 650W
Cruise Speed 20mph
Max Speed 25mph
Max Range 66 miles
Average Range 45 miles
Throttle Type Twist throttle and thumb throttle provided
Pedal Assist Levels Level 1 to 9, level 0 throttle only
Grips Provided
Handlebar Display ARC LCD with thumb pad controls
Spokes 13G stainless steel
Wiring type EB-BUS waterproof cable set
Max Rider Weight N/A


Battery Chemistry Lithium Manganese Oxide
Nominal Battery Voltage 36V
Charged Battery Voltage 42V
Battery Capacity 14.5Ah
Nominal Battery Energy 520WH
Battery Removable Yes
Battery Cell Type 18560
Cell Spec Samsung INR18650-29E 2,900mAh
Cell Configuration 10S 5P
Built in BMS Yes
Other Features Removable and lockable
Maximum Battery Charge Cycles 1,000
Battery Charger Type SANS 2A
Battery Charge Time 7 Hours (if charging from flat)


Motor Brand ARC
Motor Model Street
Motor Voltage 36V
Max Motor Power 650W
Drive Type Geared
Motor Sensors Hall sensor


Controller Brand ARC
Controller Operating Voltage 36V
Controller Max Voltage 42V
Controller Operating Amps 18A
Controller Nominal Power Output 250W/350W
Controller MOSFET Tubes STP80NF70
Controller Sensors Hall sensor


Total Weight - No Battery 4.75kg (10.5lbs)
Battery Weight 3.0kg (6.6lbs)
Total Weight 7.75kg (17.1lbs)


Battery Width 90mm (including cradle)
Battery Length 365mm (including cradle)
Battery Height 88mm (including cradle)

Whats in the Box?


Customer Reviews (2)

Faultless performanceReview by Gerald
Functions as Described
Overall Rating
I spent a lot of time looking at kits before selecting the Arc street legal kits - I bought 2 for myself and my wife. Despite the extra cost it was obvious that a lot of thought had gone into them and their guarantees were a confirmation of their faith in their own kits. The only tricky bit in fitting was the fact that the front axle and washers were just too snug and I needed to remove a fair bit of material from the front dropouts before I could get the front wheels into position. I am an experienced bike mechanic so I knew how to do this safely, but I would not recommend that most people take a file to their front dropouts! Once fitted, these kits are just superb - quiet, powerful and with a great range. We live in the Cotswolds and we have done some extremely hilly rides indeed with no problems. Upset to see the price has now dropped because for my 2 kits I payed over the odds. For anyone else though they are now even better value: highly recommended! (Posted on 1/26/2016)
Good kit...quality parts and lots of optionsReview by Darrin
Functions as Described
Overall Rating
Purchased this about a month back for son's bike. Due to his unique setup, we could only use the thumb throttle and not install the twist throttle or pedelec cadence sensor (bike has Gates carbon belt drive, NuVinci rear hub, etc.). Install was fairly straight forward except that we had to adapt the front brake caliper so that the disk cleared and didn't drag.

It's quite powerful and though you can really hear it at full power and slower speeds, it's very quiet at full speed (on the level).

The price at present is a great value but was higher when we purchased. Also, the ARC kits have a FIVE year warranty on everything except the battery, which is two years. That helped clinch the deal. (Posted on 10/24/2015)

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