Price
Motor (Nominal)
Range
Battery
Technical Architecture
Overview
Price
$1,999
MSRP
Motor
750 W
Nominal Output
Battery
720 Wh
Battery Capacity
Speed
28 mph
Unlocked Top Speed
Payload
320 lbs
Max Load Capacity
Safety Standards
UL 2849 Certified
Electrical System Integrity
UL 2711 Certified
Battery Performance & Safety
Foldable
No
Frame Style Not Specified
Editorial Insights
Key Benefits & Drawbacks
Reasons to Buy
- Class 3 speeds up to 28 mph cut down significantly on commute times.
- Hydraulic disc brakes provide powerful, reliable stopping power at high speeds.
- Robust suspension and geometry inspire confidence on rough surfaces.
Reasons to Avoid
- Premium price point pushes it out of the entry-level budget range.
- Aggressive styling might not appeal to casual riders.
Expert Verdict
In-Depth Analysis
Editorial Review: Evaluating theRadster Road
The Rad Power Bikes Radster Road is Rad's premium, high-speed answer to the ultimate urban commuter. Built on an approachable mid-step aluminum frame and available in two sizes, it moves away from budget-conscious compromises to deliver a fast, incredibly smooth Class 3 ride.
The standout design choice here is the combination of massive, fast-rolling 29-inch wheels and a highly responsive torque sensor, which work together to make you feel like you have bionic legs on city pavement. Packed with advanced safety features like a fire-resistant Safe Shield battery and built-in turn signals, it is a sophisticated, tech-loaded machine designed to completely master the daily grind.
The Technical Snapshot
- Power & Performance: Driven by an upgraded 750W geared rear hub motor that delivers an immense, hill-flattening 100Nm of torque for immediate acceleration and effortless climbing.
- Battery & Safety: Houses a semi-integrated 48V 15Ah (720Wh) Safe Shield Advanced Battery (UL 2271 certified). It encapsulates individual cells in a thermal potting resin to prevent overheating, yielding a dependable real-world range of 25 to 65 miles.
- Drivetrain & Speed: Features a class-switchable electronics system that easily toggles between Class 1, 2, or 3, pushing up to 28 mph on pedal assist (and 20 mph via the half-twist throttle). Power is cleanly managed by an under-the-bar trigger shifter and an 8-speed Shimano Acera drivetrain (11-34T freewheel).
- Brakes & Suspension: Outfitted with high-performance Tektro hydraulic disc brakes and 180mm rotors for confident, light-touch stopping. Rough asphalt is smoothed out by an 80mm travel hydraulic suspension fork paired with a secure front thru-axle.
- Wheels & Frame: Rolls on massive, efficient 29x2.2-inch Kenda Kwick pavement tires that offer excellent rolling efficiency and high-speed stability. The frame is IPX6 water-resistant and available in two distinct sizes (Regular for 4'11"-5'8" and Large for 5'7"-6'4") to ensure a perfect ergonomic fit.
- Smart Tech & Commuter Comforts: Weighs 74.5 pounds and features a 320-pound total payload capacity (with a 55-lb integrated rear rack). The tech suite is loaded with a vivid custom color display, a USB-C device charging port, a digital pin-code or NFC security fob unlock system, full fenders, a 200-lumen headlight, and an active rear brake light with integrated turn signals.
Key Specifications
Radster Road
Performance
- Motor (Nominal)
- 750 W
- Motor (Peak)
- 1,056 W
- Battery
- 720 Wh
- Battery (Ah)
- 15.0 Ah
- Range
- 65 mi
- Top Speed
- 28 mph
Practicality
- Price
- $1,999
- Weight
- 75 lbs
- Payload Capacity
- 320 lbs
- Foldable
- No
Real-World Range Estimator
Fine-tuned for the 720 Wh High-Capacity Battery
34.0 mi
Motor Type
Terrain Profile
The Science of eBike Range
Estimated range is total usable battery capacity divided by adjusted energy consumption: Range (mi) = Battery (Wh) ÷ Adjusted Consumption (Wh/mi). Manufacturer range claims are measured in ideal lab conditions, so this model starts from a real-world baseline and applies a multiplier for each factor you change above.
The variables
- Baseline: 20 Wh per mile, for a 180 lb rider on flat ground using standard assist with a hub motor. Every adjustment below is a multiplier against that number.
- PAS level: assist is banded rather than linear, because a controller delivers set power steps rather than a smooth ramp. Levels 1–2 draw 30% less energy than standard, level 4 draws 30% more, and level 5 draws 60% more — the jump at the top is steep because aerodynamic drag rises with the square of speed.
- Motor type: mid-drive motors run through the gearing, so they hold a more efficient operating range under load and consume roughly 14% less energy than a hub motor over the same route. Hub motors lose more to heat when they bog down on climbs.
- Rider weight: consumption rises 5% for every full 20 lbs over the 180 lb baseline, reflecting the extra rolling resistance and the energy lost accelerating more mass back up to speed.
- Terrain: a hilly profile adds 30% over flat ground. Regenerative braking recovers very little of what a climb costs, so elevation is close to a straight energy penalty.
This estimate is independent of the Range score shown in the rating breakdown, which grades the model against the rest of the catalogue rather than predicting a single ride. Treat the figure as a planning guide — tyre pressure, wind, temperature and stop-start riding all move the real number.
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