ALL Electric 
In the full review (9 sections)
I haven’t ridden the Rad Power Bikes RadRunner Max. This profile is built from Rad’s official product page, checked on Oct 23, 2026.
Should you buy one?
On paper, the RadRunner Max is the heavy hauler in Rad’s utility lineup, at $2,299 (as of Oct 23, 2026). It lists a 420 lb payload, a 120 lb rear rack, a 90 Nm torque sensor, hydraulic brakes, radar for approaching cars, a 672Wh battery and Apple Find My support. It’s 82 lb, so it’s not a bike you carry.
Quick specs
| Spec | Rad RadRunner Max |
|---|---|
| Motor | 750W rear hub, 90 Nm |
| Battery | 14Ah, 672Wh, UL 2271 |
| Rated range | 19-61+ mi (125+ with Range Extender and second battery, sold separately) |
| Top speed | 28 mph |
| Class | 1-3 |
| Pedal assist | Torque sensor with RideLogic, 5 levels plus zero |
| Throttle | Half twist |
| Brakes | Gemma GA-1000B hydraulic, 180mm rotors |
| Suspension | Exsho fork, 80mm |
| Drivetrain | Shimano 8-speed |
| Tires | Rad 20 x 3.5 in, puncture protection |
| Weight | 82 lb; 72 lb without battery |
| Payload | 420 lb (275 lb max rider) |
| Rear rack | Integrated, 120 lb |
| Rider height | 4’11” to 6’2” |
| Lights | 450 lumen headlight, 750 lumen high beam; HALO+ rear with radar and turn signals |
| Display | Color, passcode, radar, Apple Find My |
| Kickstand | Dual leg center stand |
| Weather | IPX6 |
| Price | $2,299 (as of Oct 23, 2026) |
Sources: RadRunner Max product page, checked Oct 23, 2026.
Pros and cons (from the specs)
Pros
- 420 lb payload and 120 lb rack
- Radar alerts for cars up to 100 meters behind
- 90 Nm torque sensor
- Hydraulic brakes, turn signals, high beam
- Center stand for loading
- Apple Find My
Cons
- 82 lb
- 672Wh is smaller than the Radsters’ 720Wh
- More expensive than the RadRunner 3 Plus
What the specs mean on the road
420 lb payload, 275 lb max rider. A 200 lb rider has 220 lb left for kids or cargo, with up to 120 lb on the rack.
90 Nm torque sensor. Strong pull from a stop with a load, and smooth assist as you pedal harder.
Radar. The display shows approaching vehicles’ distance and speed, and the rear lights flash to alert them, even with your lights off. That matters most when you’re hauling kids in traffic.
672Wh, 19-61+ miles. Loaded cargo riding uses more power. Expect the lower end with heavy loads.
20 x 3.5 in tires. Small, wide wheels keep the load low and stable.
Dual leg center stand. Holds the bike upright while kids climb on. I praised the parking brake on the Bunch Bike for the same reason.
82 lb. Plan for garage storage.
How it compares to bikes I’ve reviewed
- Rad RadRunner 3 Plus: the RadRunner I reviewed.
- Rad RadWagon 4: Rad’s longtail cargo bike I reviewed.
- Bunch Bike Original 3.0: the front-box family hauler I tested.
Who it’s for
- Parents hauling kids
- Riders carrying heavy cargo
- Riders 4’11” to 6’2”
Who should look elsewhere
- Anyone without ground-level storage
- Riders who need over 275 lb rider capacity
Price
$2,299 on Rad’s site as of Oct 23, 2026.
