• Speedometer icon to represent the top speed of this electric bike model

    Top speed20 mph

  • Icon to represent the max range of this electric bike model

    Range60+ miles

  • Lightning bolt icon to represent the motor power of the electric bike

    Power750W

  • Icon of a weight to represent the payload capacity of the electric bike

    Payload315 lb

  • Logo communicating that this product is UL certified

    SafetyUL Certified

  • Shield icon to represent the warranty for Rad Power Bikes electric bikes

    Warranty2-year

4.3 (32 reviews)

RadExpand™ 5 Plus Electric Folding Bike

Features front suspension, hydraulic disc brakes, turn signals, and retractable pedals for easier storage. For riders 4'10"-5'10"

$1,899
Ships within 2 business days
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Build difficulty: Easy


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The folding bike. Gone futuristic.

We’ve taken the classic RadExpand folding bike and enhanced it with all-new tech, impressive range, and a collection of features that make it more comfortable, capable, and unique. Tackle tougher terrain with a hydraulic front suspension fork, and enjoy smoother rides wherever you wander with the all-new torque sensor that responds to the way you ride.

"One of the Best Folding E-Bikes We've Ever Tested."

Micromobility Industries

"Better handling over nearly all other folding ebikes we've tested."

Electric Bike Report
Dive deeper

The future of folding bikes

Right side view of a RadExpand 5 Plus electric folding bike in slate blue
Safety & Quality

Engineered to put safety first

Explore our first-class safety features for all rider types.

A close up image of the UL-Certified SafeShield battery pack on the Stone Tan RadExpand 5.

Raising the bar

All Rad ebikes are either UL Certified or tested by ACT to comply with UL 2849.

This means our bikes and electric systems have undergone rigorous testing to meet safety standards set by UL, a respected third-party organization.

Although U.S. guidelines don’t currently require ebikes to meet UL Certification, we go the extra mile to ensure our riders feel safe in the saddle. UL Certification, we go the extra mile to ensure our riders feel safe in the saddle.

Learn more

Size guide

Tailor-fit comfort. For every rider.

in

30" bike inseam

Slide the scale for your bike inseam measurement

RadExpand 5 Plus

You will be able to pedal and stand over the frame comfortably.

5'4

Katya's measurements: bike inseam 30", height 5'4"

Design driven

Each piece designed for a purpose.

Comfortable & versatile

Effortlessly traverse city streets, rugged trails, and steep hills. The hydraulic front suspension fork smoothes out your ride, while the responsive torque sensor delivers added power when you pedal harder.

Safety. Expanded.

Whether your ebike’s on the road or stowed away, the Safe Shield Battery features anti-thermal technology for extra protection. And for even safer rides, the RadExpand 5 Plus boasts rear-facing turn signals and fast-acting hydraulic disc brakes.

Take it anywhere

The RadExpand 5 Plus conveniently folds-up for easy storage in cramped apartments, RVs, or the trunk of your car. To save you even more space, we’ve equipped it with new collapsible pedals.

A tech-savvy space saver

This is our most advanced folding bike yet. Cover up to 60 miles per charge, track your stats with a full-color display, and charge your phone when you’re on-the-go.

Rad accessories

So many ways to ride Rad.

Image of the RadExpand 5 Plus with a large font-mounted basket, large roll-top liner & Rad Mirror.
Image of the RadExpand 5 Plus in Slate Blue with a rear-mounted pannier bag, handlebar bag & Rad Mirror.
RadExpand 5 Plus in Slate Blue with a water bottle cage & water bottle, Rad Mirror, rear-mounted large basket & rear-mounted Pannier.

Park anywhere

Quick trips just got quicker. Lock it up and go.

Shop Accessories

Apartment-friendly

Save on space with small, compact accessories.

Shop Accessories

Road trip-ready

Small enough for an RV, tough enough to carry gear.

Shop Accessories
Image of a woman riding the RadExpand 5 Plus ebike in Slate Blue. The bike is showing an assortment of accessories including the large basket, large roll-top liner and handlebar bag.
Image of a woman riding the RadExpand 5 Plus ebike in Slate Blue. The bike is showing an assortment of accessories including the large basket, large roll-top liner and handlebar bag.
Image of a woman riding the RadExpand 5 Plus ebike in Slate Blue. The bike is showing an assortment of accessories including the large basket, large roll-top liner and handlebar bag.

Reliable service and support.

Truck icon in a yellow circle

Free, fast shipping

Wait less, ride more. Enjoy fast, free shipping on all ebike orders.

Learn more
Shield with check mark on a yellow background

2-year warranty

Ride in confidence. We’ve got you covered.

Learn more
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Explore our Help Center

Can’t choose a bike? Need to fix a flat? We’re here to help.

Support

RadExpand™ 5 Plus Electric Folding Bike Reviews

Specs & details

Electronics

  • Battery

    15Ah 720 Wh 15Ah Safe Shield Advanced External Battery, Samsung 50GB or LG M50LT cells, UL certified to UL-2271

  • Charger

    48VDC, 2 Amp Rad Power Bikes smart charger, operates on 100V-240V AC power outlets

  • Class

    Class switchable between 1 and 2. Ships in Class 2 status.

  • Display

    Rad custom color display. See Display section below for details.

  • Hub Motor

    Rear hub 750W, 64 Nm torque
    Stated wattage is the manufacturer’s rated power capacity. Actual power-to-ground wattage is under 750W to ensure ebike regulatory compliance and may vary depending on riding conditions.

  • Lights

    Auto-on feature
    Front: ~200 lumens LED headlight with built-in reflector
    Rear: Integrated taillight with brake light and turn signals

  • Pedal Assist

    Torque sensor, 5 PAS Levels, plus a zero assist option

  • Range

    Estimated 20-60 miles per charge

  • Throttle

    Half twist throttle

  • UL Status

    UL Certified to UL 2849 and UL 2271

  • USB Ports

    One USB-C port, located on display

Batteries come with a universal key that can be used to lock and unlock the battery to your ebike. Please note that universal keys are not unique to your ebike battery and may work with a variety of locks, including on other Rad ebikes. Universal keys do not offer the highest level of security compared to dedicated or unique key locks. We do not recommend leaving your battery affixed to your ebike in public unattended as it may pose a risk of battery theft.

Components

  • Bell

    Yes

  • Brake System

    Hydraulic Disc, Gemma GA-1000B

  • Brake Pads

    Gemma Semi-Metallic G2

  • Brake Rotors

    180mm x 2.3mm

  • Crank Set

    48T with dual sided chain ring cover, 170mm crank arms

  • Derailleur

    7 speed Shimano

  • Fenders

    Full coverage front and rear fenders

  • Fork

    Exsho STRONG-C hydraulic suspension fork, 50mm travel, bolt-on axle

  • Frame

    Aluminum

  • Freewheel/Cassette

    7-speed freewheel, 14-32T

  • Gearing

    1x7 speed

  • Grips

    Ergonomic rubber comfort grips

  • Handlebar

    Aluminum, 680 mm wide

  • Kickstand

    Side mounted, adjustable angle kickstand

  • Pedals

    Composite platform, CrMo axle with reflectors, standard 9/16" x 20 TPI threading, folding

  • Rear Rack

    Integrated, 59 lb (27 kg) carrying capacity

  • Saddle

    Padded flat touring saddle with shallow anatomic cut-out, wide contoured sides

  • Seatpost

    390 mm x 27.2 mm

  • Seatpost Clamp

    31.8 mm

  • Shifter

    Shimano 7-speed thumb shifter

  • Stem

    Folding stem raiser with 45mm A-Head stem

  • Tires

    CST BFT 20" x 4.0", e-bike rated with puncture-resistant liner and reflective strip

To ensure uninterrupted shipping, some parts may differ from those listed. Rest assured, our engineers rigorously test each component to guarantee quality and compatibility.

Geometry

Rider Heights 4'10"-5'10" (147-178 cm)
Bike Weight 72.5 lb (32.9 kg), 62.5 lb (28.3 kg) with battery removed
Payload 315 lb, 225 lb max rider weight
Rear Rack Payload 59 lb (27 kg)
Folded Dimensions 29"H x 25"W x 41"L
Handlebar Height 43.5" (110.4 cm)
Reach 17.9" (455 mm)
Seat Height From ground: 31" - 38" (78.7 - 96.5 cm)
From pedal bottom stroke: 26" - 33" (66 - 84 cm)
Standover Height 16.5" (41.9 cm)
Stepover Height 16" (40.6 cm)
Total Length 68" (172.7 cm)
Wheelbase 44.5" (113 cm)
Seat Tube Length 14.2" (360 mm)

Sizing

Bike inseam sizing chart(Inches)

24 - 26"

26 - 33"

33+"

You will not be able to ride the bike comfortably.
You will be able to pedal and stand over the frame comfortably.
Your legs may be too long to get full leg extension when pedaling.
What to Measure

Your “bike inseam” — or inside leg length — is the distance between your body where it sits on your bike saddle and the ground.

It’s typically an inch or two longer than the length of your trousers, but measure to be sure.

You’ll use this number on the chart to get a feel for how the different models will fit you.

How to Measure

Gather the tools needed:

Medium-width hardcover book
Tape measure
A wall you can stand against
A trusted friend or relative

Wearing your regular riding shoes and with your back to the wall, stand with your feet spread so there is about 7 inches between them - this is about the distance apart your feet would be when straddling a bike with your feet on the ground (standover height).

Place a hardcover book against the wall with the spine of the book facing upward. Slide the book upwards towards your groin until it is solidly against your body. This may be a bit awkward, but is way more comfortable — and safer! — than trying to ride a bike that is too big.

If you have a buddy helping you, get them to measure from the floor to the top of the book spine while you hold the book in place. If you’re going it alone, carefully hold the book in place and measure from the ground to the top of the book spine.

Display

  • Class level

    Choose speed settings for your ride:
    Class 1: up to 20 mph, throttle only works while pedaling.
    Class 2: up to 20 mph while pedaling or throttling.

  • Speedometer

    Fast and Curious? The speedometer will tell you your current speed.

  • Odometer

    Track the distance you’ve racked up, either by trip or through the bike’s entire lifespan.

  • Estimated remaining range

    Is it time to recharge? To help you keep track, this displays your remaining battery life in either percentage or remaining miles.

  • Trip time

    Did your trip feel like it was just half an hour, or did time fly by? This display will show you the time you spend on each outing. Be sure to reset your trip odometer before a ride you want to track.

  • Pedal assist level

    The higher the number, the more the motor will boost you when you pedal. This shows what level you’re on, from 0 to 5.

  • Motor watts

    Check out how much power the motor is supplying at any given time.

  • Headlight, tail light, and rear turn signals

    It’s always a bright idea to make sure your lights are on and operating.

    Note: Rear turn signals can be manually turned off or will turn off automatically two minutes into use.

  • USB charge indicator

    Charging your device? This will confirm if your phone (or tablet, or smartwatch, or headphones, or …) is getting the juice it needs.