Stable, Fast, Electric Quad Cycle

The QMX Urban Assault is the best blend between a four-wheel BMX bike and an electric scooter. The ride is stable, fast and glides unlike any other electric scooter on the market. Other words that have been used to describe the QMX; Fun, Cool, Solid, Well-built, and Downright Sexy.

      QMX Urban Assault comes with front and rear suspension for a plush ride. The addition of oversized 20 x 4 inch tires makes quick work of sand, snow, grass and all your favorite Urban terrain.

High strength aerospace 4031 chromoly steel frame creates a strong backbone for the Urban Assault.
Color Options: International Orange, Pearl White, Satin Black. Additional colors available as an add on.

QMX Specs
Rear Axle Width 34"
Front Axle Width 36 1/2"
Wheel Base 45"
Overall length 67"
Overall height 31"

Four-wheel electric vehicle with mechanical disc brakes and large seat. The urban assault offers the daily commuter and weekend warrior the opportunity to quickly and conveniently navigate their urban environment.
Urban Models
Urban Sport
Urban Assault
Urban Econo
The Sport model bike comes with our signature Chromoly frame set plus a few upgrades. This Model uses our 800-Watt, 36-volt AmpFlow F30-400 Mid-Range motor combined with our three-speed mid drive system. Average top speed is 25 mph.  The addition of front and rear mechanical disc brake is a significant upgrade and improve all weather stopping power and performance.
Our Urban Assault model comes with our signature Chromoly frame set plus all the upgrades. This Model uses our 800-Watt, 36-volt AmpFlow A28-400 High-Performance motor combined with our eight-speed mid drive system. Average top speed is 35 mph.  We went all out with front and rear Hydraulic Disc brakes for superior stopping power and performance. The additional speed requires additional suspension which is why we put on the Fox Float air ride adjustable rear shock.
Our Economy Electric bike comes with our signature Chromoly frame set and all standard Parts. This Model uses our 800-Watt, 36-volt AmpFlow E30-400 motor combined with our single speed mid drive system. Average top speed is 20 mph.  The single rear mechanical disc brake is plenty of stopping power for a light urban commute.

Extreme Models

Extreme Assault
Extreme Country
Extreme Downhill
Our Intry level Exteme model starts off where the urban assault ended.
Enjoy the air ride suspention of Fox Racing shocks. 
Our Downhill Model is cutting edge technology and offers the rider long travel suspension for rugged conditions.
Color Options

International Orange

Satin Black

Pearl White

Motor Options
Economy (Standard)
Mid-Range (Upgrade)
The economy E30 motors are designed to give good performance at the lowest possible price.
The mid-range F30 motors are designed for the highest performance and efficiency while still using the less expensive ferrite magnets.
AmpFlow high-performance A28 motors are designed to give the highest level of performance possible in a brushed DC motor. This is achieved by advanced design and the use of neodymium rare-earth magnet material.
Speed Options
Single Speed (Standard)
3-Speed (Upgrade)
8-Speed (Upgrade)
This unique design offers instant and positive engagement that's capable of handling a torque load of over 800ft/lbs, or over three times more than most other high end hubs we've tested.
Shimano Nexus hubs offer the best in gear ratio without making the system to complicated. Want a simple cruiser but still have a hill to get up to get home. This hub just might solve that problem for you.
Discover ALFINE Di2, a stylish and sophisticated way to enjoy the ultimate urban riding experience.
Saddle Options
Econo (Standard)
Sport (Upgrade)
Extreme (Upgrade)
The simple backrest makes the Urban Assault a classic and rugged solution to a local commute or a serious midnight run.
Flexible, form fit high or low back.
Coextruded polymer components.
Flexible, form fit with adjustable back angle. Polymer material - strongest available while maintaining flexibility in the coldest conditions.
Pedal Options
Pegs (Standard)
Clip-IN-Pedals (Upgrade)
Steel Alloy High Quality Pegs
Long Ride Comfort.
Non-Slip Design Better Grip but Avoid Damage to Shoes.
Platform pedal with Alloy High Quality Light But Strong.
Designed for the rigors of BMX as well as off-road racers. Cleat tension adjustment with indicators for each rider preference.
Brake Options
Mechanical Disc (Standard)​
Tektro Hydraulic Disc (Upgrade)
Magura MTMT7(Upgrade)
The Avid BB7 has set the standard for mechanical disc brakes for years. Avid's CPS (caliper positioning system) continues to make setup and adjustment a snap.
Design for 4-wheel QMX.
Sensor control designed
Easy installation, adjustment and maintenance

Magura MT7 Carbotecture® Disc Brake Set 203 / 180 Storm HCBraking.  Maximum braking performance and stability in extreme use, this is the motto of the MT7.
Battery Options
Lead-Acid Battery (Standard)
Charger (Standard)
Lithium Ion Batteries (Upgrade)
Electric Scooter Battery Charger Power
12V 12AH Battery
Terminal / Connector:  F2/T2 (0.25")
Product Dimensions: 5.94" x 3.86" x 3.74"
Product Weight: 7.50 LBS 
Offering up to 65% More Run Time
Unique Cool Pack™ Design offers advanced heat conductive housing keeps battery cooler, lives up to 2x longer. Battery will work down to -4°F
Durable Housing allows it to survives 3 meter drop
Rear Axle Options
Sun Steel Economy (Standard)
Aluminum Cage/ Posi Differential (Optional)
Aluminum K1Design 30mm DownHill(Optional)
Sun Trikes standard rear steel cage which included single center disk brake mount and cartage bearings. single drive wheel system.
Aluminum (6061 t6) tube cage which includeds dual disk brake mounts and UTCustom Freewheel Posi Differential system.
Formula K1 Kart direct drive live AXLE, Aluminum (7075) TUBE, 32" LENGTH, 1-1/4" OD. This system features Cycle QMX custom k1 hub design which includes single center mount 180mm rotor disk brake system.
Rear Axle Options
​Basic Coil Over (Standard)
Fox Float CTD (Upgrade)
​Rear suspension shock absorber,
    A quality precision made part for strength and durability
    This suspension provides a smoother ride and better overall damping management
Fox Float CTD Factory Shock sets a new standard in suspension technology. CTD is a simple and intuitive method for controlling the suspension characteristics on the bike. CTD stands for: Climb, Trail and Descend. Each setting correspo
nds to the various trail conditions to allow the rider to make on the fly adjustments.

​FOX's most advanced coil shock design - Offers high- and low-speed compression and high- and low-speed rebound adjustment - Increased oil flow improves damping control and consistency - New SLS spring provides titanium weight savings at affordable price
(904) GOT-QMX4
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Melbourne, FL