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"Powerful Support, Smooth Ride"

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ROLL-ROAD

Roll-Road Emma 4.0

Regular price
$2,199
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  • Free shipping

  • 30-Day Return

  • 2-Year Warranty

Details

  • Shipped as class2
  • 2 Person Seat Version Including 2 Seats: Standard Seat & 2-person Seat
  • In Stock-Free shipping from CA Warehouse within 8hrs
  • Pick Up Service: 6610 DOOLITTLE AVE, RIVERSIDE, CA 92503

Emma 3.0 vs Emma 4.0 – Key Upgrades

Headlight
• Emma 3.0: Standard color headlight
• Emma 4.0: Brighter, sleek integrated

LED headlight
Front Battery Mount
• Emma 3.0: Side-mounted
• Emma 4.0: Integrated frame battery – stable, no vibration

Rear Battery Handle
• Emma 3.0: No handle
• Emma 4.0: Pull-handle for easy removal

Turn Signals
• Emma 3.0: Basic indicators
• Emma 4.0: Larger, brighter, more
stylish turn lights

Electrical System

• Emma 3.0: Standard wiring
• Emma 4.0: Optimized circuit & controller – smoother, more efficient power delivery

SHIPPING & RETURNS

We offer free shipping on all of our bikes everywhere within the US lower 48 States.(Excludes: Alaska/Hawaii, US Protectorates, APO/FPO, PO Box)

Shipping Time
In-stock orders typically ship in the next business day, unless otherwise noted on the product page. 

We provide optional signature services. There are so many electric bikes thefts, customers are advised to choose this option. We purchase this service at no cost to you.

If your product arrives damaged, please email us atmailto:support@roll-road.com.Please retain all original packaging and materials for potential returns.

KEY FEATURES

Powerful Performance

BAFANG SUTTO Hub Motor: 2600W peak power delivers thrilling performance and ample speed and torque for any terrain.

2×52V 1040Wh EVE Battery: Up to 150 miles range on a single charge—ride farther, worry less.

180mm Four-Piston Hydraulic Disc Brakes: Superior stopping power for confident, safe riding.

Dual-Air Pro Suspension:Double crown motorcycle level hydraulic FRONT fork; The only and best Nitrogen REAR Air Shocks on the market; Both front and rear are adjustable.

CST Scout Tires: Durable tread handles rough roads and trails with ease.

Smart LCD Display: Clear, intuitive ride data—and doubles as a USB phone charger.

Built for Two:Dual-Saddle Seat with Rear Footpegs: Designed for larger riders and shared adventures.

450 lbs Load Capacity: Stable, safe, and comfortable for two riders.

TECHNICAL SPECIFICATIONS

Why is the Roll-road Emma 4.0 the most powerful electric bike in Australia?

Motor: 52V 1500W BAFANG rear hub brushless motor

Battery: 52V 20Ah×2 EVE lithium-ion battery

Charging Time: 4–6 hours

Range: Up to 150 miles on a full charge

Top Speed: 28 mph (public road compliant), 35 mph (unlocked for private use)

Frame: Reinforced 10mm-thick 6066 aluminum alloy

Tires: CST Scout Puncture-Resistant Tire

Brakes: 180mm four-piston hydraulic disc brakes

Suspension: Front dual hydraulic suspension + rear genuine nitrogen shock absorber

Display: Waterproof and dustproof color LCD with built-in USB phone charging

Weight: 110 lb/84 lb (w/o battery)

DISCLAIMER

All products shipped by Roll-road are inspected by both the manufacturer and Roll-road mechanics. However, it is the rider’s responsibility to thoroughly check and tighten all bolts and screws before assembly and prior to the first ride. Failure to do so—including improper alignment or neglecting to verify bolt torque—may result in injury, for which Roll-road accepts no liability.

It is the customer’s responsibility to read and fully understand all product documentation provided on the Roll-road website at the time of purchase, including battery care instructions, maintenance guidelines, and warranty terms.

Actual range and speed may vary depending on rider weight, terrain, gradient, wind conditions, battery age, state of charge, riding speed, and other operational factors.

Roll-road products are intended strictly for recreational use. Regulations governing the use of electric bikes differ across Australian states and territories. Riders are responsible for riding safely, wearing a helmet and appropriate protective gear, and complying with all applicable local laws and usage requirements. Any information or guidance provided by Roll-road is general in nature and may not apply uniformly to all users or situations.

Please note: While every bicycle is carefully assembled and inspected before dispatch, minor adjustments are often necessary after delivery. It is common for components such as derailleurs to shift slightly, brake rotors to rub lightly, or fenders to become misaligned during transit. These issues result from normal movement during shipping and are considered standard post-assembly tuning—not manufacturing defects—and therefore are not covered under Roll-road’s warranty.

For the best riding experience and optimal safety, we strongly recommend having your bicycle assembled or inspected by a qualified professional mechanic.

FULL REMOTE SUPPORT INCLUDED

  • TALK TO A HUMAN -INSTANTLY.
  • STEP-BY-STEP VIDEO GUIDES.
  • NO BOTS. JUST EXPERTS.

Integrated. Stable. Silent.

  • No Limits.Just Power.

    52V advanced system: higher efficiency, steadier power (vs. 48V). 1500W BAFANG SUTTO motor: strong, snappy acceleration—ideal for cargo & steep climbs

  • Dual Battery

    Equipped with a dual EVE battery system featuring two 52V 20Ah units, it delivers a combined capacity of 40Ah (2080Wh of total energy) and an impressive range of up to 150 miles.

  • The Unbeatable Frame

    Designed specifically for riders weighing over 450 lbs Constructed from the industry's thickest 10mm aerospace-grade aluminum for unbreakable durability.

  • Dual-Air ProSuspension

    Double crown motorcycle level hydraulic FRONT fork; The only and best Nitrogen REAR Air Shocks on the market; Both front and rear are adjustable. 

Torque Sensor

Pedal harder, power surges—effortless climb, natural ride.

CST Scout

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Smart Display

4" color LED display—packed with all the details you need. NFC unlock for total freedom!

For Safety

Designed to see and be seen.

Light it Up

2000-lumen LED headlight with built-in horn, brake lights, and turn signals—safety, refined.

Largest Cargo Capacity

Turn your EMMA4.0 into a multi-purpose e-bike—pair the rear rack with our Passenger Seat and Cargo Trunk for max capacity.

Cruise Control

Set. Relax. Ride. The simplest way to cruise. Hold your speed without holding the throttle.

Specifications

GENERAL

Range——150 Mi(240KM) range

Speed——35 MPH(56KM/H) Unlocked

Weight Capacity——450 Lb(200KG)

Hill Climbing——The slope percentage is 30%,Up to slope 16.7°

Full Suspension——Dual Hydraulic Suspension Real Nitrogen Air Shocks

PAS——0-5 Level

Bike Weight——110 lb(50KG)/84 lb (38KG) *w/o battery*

Transmission——1 Speed SHIMANO

ELECTRICAL & POWER

Motor——1500W (1800W Peak) BAFANG SUTTO
Throttle——Half Twist Throttle
Type C——1A Typc C Port
Turn Signal——LED Turn Signals
Headlight——Led 2000 lumen headlight
Battery——52V/20Ah×2
Speed Sensor——Center Axle Torque Sensor
4'' Color Display——Smart display
Charger——Faster 3A Charger
Controller——32 Amp 

COMPONENTS

Front Fork——Double crown hydraulic suspension Adjustable with lockout
Wheels——Aluminum Alloy
Headlight——LED 2000 Lumen  Headlight
Brake Rotor——180mm Rotor
Fenders——Front and Rear Fenders Included
Chain——KMC Dacromet Surface Anti Rust chains
Rear Suspension——0.4mpa motorcycle air shocks adjustable hydraulic suspenaion
Tires——CST SCOUT 20"x4.0" with Reflective Strip
Tail Light——LED Brake Light & Turn Signals
Saddle——Ergonomic Cushioned Saddle
Brakes——4-Piston Hydraulic Brakes
Pedals——Wellgo Pedals

Size And Fit