Written by:
Liam E.
Last updated:
Jun 14, 26
The RadExpand 5 packs a 750W motor and fat tires into a folding frame that fits almost anywhere.
750W geared hub motor delivers smooth, predictable torque across all 5 assist levels
672Wh battery (48V 14Ah) provides genuine 35-mile real-world range at moderate assist
20x4-inch fat tires absorb road chatter effectively with no suspension fork
Integrated rear rack, fenders, and front/rear lights included at $1,499 — no add-on cost
Step-through frame accommodates a wide 4'11" to 6'2" rider height range
Mechanical disc brakes feel soft under hard braking — hydraulic stoppers are noticeably absent at this price point
At 62 lbs, carrying the folded bike up stairs or loading it into elevated cargo spaces is genuinely difficult
One-year warranty is shorter than competitors like Aventon and Trek offer on comparable models
If you’ve been hunting for a folding e-bike that doesn’t force you to compromise on power or capability, this rad power radexpand 5 review is going to get your attention. Rad Power Bikes built the RadExpand 5 around a premise that sounds almost contradictory: a fat-tire, high-torque folding e-bike that serious commuters and apartment dwellers can actually live with. At $1,499, it sits in that sweet spot where the specs start getting genuinely impressive without the price tag becoming a dealbreaker.
What you’re getting here is a 750W geared hub motor, a 48V 14Ah (672Wh) battery, 20×4-inch fat tires, and a 7-speed Shimano drivetrain — all on a step-through aluminum frame that folds down to roughly 41x19x28 inches. Integrated fenders, a rear rack, and front and rear lights come standard. That’s a lot of bike for the money, and it targets a specific rider: the urban commuter or weekend explorer who lacks garage space, needs to toss the bike in a car trunk, or wants to roll the thing into a small apartment without arguments.
The step-through geometry fits riders from 4’11” to 6’2″, which is a legitimately wide range. It’s not a lightweight folder — 62 pounds is real weight — but the feature set justifies the heft for the right buyer.
The RadExpand 5 is built for the urban commuter who operates out of a small apartment, a crowded office, or a vehicle with limited cargo space. If your commute runs 10 to 20 miles round trip and involves mixed terrain — pavement, bike lanes, maybe some gravel paths — this bike handles it without complaint. It’s also a strong choice for van-lifers, RV owners, or anyone who needs an e-bike that fits in a storage compartment.
This isn’t a bike for competitive cyclists or fitness riders who want a lightweight machine. The 62-pound weight means carrying it up multiple flights of stairs is a genuine workout. Budget-conscious buyers who want maximum spec per dollar will appreciate the included rack, fenders, and lights — accessories that easily add $150 to $200 when purchased separately. If you’re a casual-to-moderate rider who values versatility and storage practicality above all else, this is your bike.

The 750W geared hub motor is the same unit Rad uses across most of its lineup, and it performs well here. Torque delivery is smooth rather than aggressive — you won’t get that neck-snapping lurch some hub motors produce at launch. Through the five pedal assist levels, the power ramps up predictably, which matters when you’re navigating city traffic or hopping curbs on fat tires. The throttle is available at all assist levels, a feature some competing folders strip out entirely.
The 20×4-inch fat tires absorb road chatter surprisingly well given there’s no suspension fork, and on crushed gravel or uneven pavement they inspire genuine confidence. Don’t expect trail riding — this isn’t that bike — but for mixed urban terrain they’re excellent. The 7-speed Shimano drivetrain shifts cleanly, though the mechanical disc brakes, while adequate, feel a touch soft compared to hydraulic setups at this price point. Stopping power is sufficient, but riders coming from hydraulic brakes will notice the difference in lever feel.
Real-world range falls between 25 and 45 miles depending on assist level, rider weight, and terrain. At assist level 2 or 3 on flat ground, 35 miles is a reasonable expectation. Charge time runs approximately 6 hours from empty on the standard 2A charger.
$1,499
62 lbs (28.1 kg)
6061 aluminum alloy, step-through, folding
750W geared rear hub motor
48V 14Ah (672Wh) lithium-ion
25–45 miles (terrain and assist level dependent)
~6 hours (standard 2A charger)
5
Half-twist throttle, available at all assist levels
7-speed Shimano
Mechanical disc brakes
20x4-inch fat tires
41" x 19" x 28"
4'11" – 6'2"
1 year
The RadExpand 5 packs a 750W motor and fat tires into a folding frame that fits almost anywhere.