Rad Power Bike Weight & Sizing: Which Model Fits Your Height & Needs
Rad Power Bike Weight & Sizing: Which Model Fits Your Height & Needs
Quick answer
If you’re under 5’3”, the RadExpand 5 step-through or RadCity step-through are your best bets—both have low standover heights (under 22 inches) and reach all the way down to 5’1”. For riders over 6’2”, the RadWagon 4 offers the longest seat-post extension (38 inches) and an upright cockpit that fits up to 6’6”. The RadRover 6 Plus step-over works for riders up to 6’2” but hits its limit sooner. No single [Rad Power bike](https://ebikedelight.com/rad-power-bike-warranty-customer-support-guide/) fits every body type, but the lineup covers 5’1” to 6’6” when you choose the right frame style and model.
Comparison framework
Rad Power’s nine current models split into four functional categories. Each category has a distinct weight, step-over height, and rider-height envelope. The table below gives the numbers you need to make the first cut.
| Model | Weight (lbs) | Frame style | Rider height range | Standover height | Payload capacity (rider + cargo) |
|---|---|---|---|---|---|
| RadRover 6 Plus (step-over) | 73 | High-step | 5’4” – 6’2” | 32.5” | 350 lbs |
| RadRover 6 Plus (step-thru) | 75 | Step-through | 5’4” – 6’2” | 25.5” | 350 lbs |
| RadCity 5 Plus (step-over) | 63 | High-step | 5’2” – 6’2” | 31” | 350 lbs |
| RadCity 5 Plus (step-thru) | 65 | Step-through | 5’2” – 6’2” | 23.5” | 350 lbs |
| RadMini 4 (step-over) | 63 | Folding high-step | 5’2” – 6’2” | 29.5” | 275 lbs |
| RadMini 4 (step-thru) | 64 | Folding step-through | 5’2” – 6’2” | 22.5” | 275 lbs |
| RadExpand 5 | 62 | Folding step-through | 5’1” – 6’2” | 21.7” | 275 lbs |
| RadWagon 4 | 77 | Step-through (longtail) | 5’2” – 6’6” | 24” | 350 lbs |
| RadRunner 3 Plus | 71 | Step-through (compact) | 5’2” – 6’2” | 22.5” | 350 lbs |
| RadTrike | 86 | Step-through (trike) | 5’1” – 6’2” | N/A (side step) | 350 lbs |
All weights listed without battery (battery adds 7–8 lbs). Height ranges are based on Rad Power’s official sizing tool with the handlebar and seat at maximum adjustment. Standover height measured at the top of the frame tube with the bike unladen. These specs apply to current production models (2022–2025); earlier versions may have slightly different standover heights or seat-post travel.
Key differences that affect fit:
- Step-through vs. step-over: Step-through frames lower the standover height by 6–8 inches, making them essential for shorter riders or anyone who wants to mount/dismount without swinging a leg high. The trade-off is roughly 2 extra pounds and a slightly less stiff frame under hard cornering.
- Wheel size and riding position: 20-inch wheels (RadMini, RadExpand, RadRunner, RadWagon) lower the overall pedal height, which helps shorter riders reach the ground at a stop. 26-inch wheels (RadCity, RadRover) give a more traditional bike feel but raise the saddle height range by about 2 inches.
- Payload vs. frame weight: The RadWagon 4 tops the scales at 77 lbs (without battery) but can carry up to 350 lbs total. The RadMini 4, at 63 lbs, has a 275 lb payload limit. If you need to carry a second child or heavy groceries, the extra chassis weight is unavoidable.
What this means for your purchase decision
Choose the frame style first based on your inseam and comfort mounting. Then pick the model that matches your weight budget and need for range (battery Wh). If you plan to lift the bike into an SUV or carry it up stairs, the weight difference between a RadCity (63 lbs) and a RadWagon (77 lbs) is a concrete, lifting-every-time consequence—not just a number.
How to verify fit on your actual bike
Measure your inseam (barefoot, feet 6 inches apart, from floor to crotch). Compare to the standover height: you need at least 2 inches of clearance for a step-over frame, or you can use a step-through frame if your inseam is within 1 inch of the standover. Then sit on the bike with the seat post at mid-range and check that your knee has a slight bend at the bottom of the pedal stroke and that you can place the balls of both feet flat on the ground. If you must tiptoe, the frame is too tall or the seat is too high.
Best-fit picks by use case
For riders under 5’4”
The RadExpand 5 is the most accommodating. Its 21.7” step-through height means nearly anyone 5’1” and up can stand flat-footed over the frame. The saddle drops to 26.5” from the ground, letting you put both feet down without leaning. The 20-inch wheels keep the pedaling arc low, so knees don’t hit the handlebar at full turn. If you want a more upright commuter position, the RadCity step-through (23.5” standover) works down to 5’2” but has a slightly taller minimum saddle height.
For riders 6’0” to 6’6”
The RadWagon 4 has the longest seat post (extends to 38” from the ground) and a very upright cockpit. Tall riders can push the handlebar stem up using the included riser extender, adding 3 inches of bar height. The RadRover 6 Plus step-over also fits up to 6’2” but reaches its limit sooner—the maximum seat height is about 36” with the post fully extended. Neither model requires aftermarket parts to fit 6’4”+ riders, but the RadWagon is the better choice if you’re over 6’3”.
For riders who need to carry cargo (no extra passengers)
The RadCity 5 Plus or RadRunner 3 Plus balance weight and payload. The City is lighter (63 lbs) and can still carry 350 lbs total, but its 26-inch wheels make it harder to load heavy items onto the rear rack because the rack sits higher off the ground. The Runner 3 Plus (71 lbs) has a lower cargo deck (20-inch wheels) and an integrated caboose seat, making it easier to strap a 50 lb bag of dog food or a crate without lifting.
For riders who need to lift or store the bike frequently
The RadMini 4 step-thru folds to roughly 35” x 28” x 23” and weighs 64 lbs. That’s still heavy to carry up stairs—consider removing the battery (7 lbs) to drop it to 57 lbs. The RadExpand 5 folds to a similar size and weighs 62 lbs, but its lower step-through makes it slightly easier to hoist onto a bus rack. Neither model is a lightweight; a standard commuter bike is 30–40 lbs. Plan on using the throttle for the last 50 feet to a storage closet rather than carrying it by hand.
What can go wrong with frequent lifting: If you lift the folded bike by the frame joint instead of the reinforced carry point, you can stress the hinge and cause premature wear. Always grasp the top tube or the dedicated lift handle (RadMini has one behind the seat tube). Also, the folding latch must be fully locked before riding—an unseated latch can collapse the frame under load.
Trade-offs to know
Step-through and frame stiffness. A step-through frame lacks a top tube, so the frame bends more under heavy loads or sharp turns. On the RadWagon 4 (which hauls up to 120 lbs of cargo), that flex can feel unsettling during sudden steering inputs. The high-step RadRover and RadCity are stiffer when cornering, which matters if you carry the max payload on uneven streets.
Weight and battery trade-off. Every Rad Power bike uses a 48V 14Ah battery (672 Wh) except the RadTrike, which uses two 48V 10Ah batteries. That battery pack weighs 7–8 lbs. If you add a second battery (not officially supported but common on some models), you gain range but also another 7 lbs. The base weight of the heaviest model (RadWagon 4 at 77 lbs) plus battery plus a rear-rack baby seat can exceed 90 lbs. That makes lifting onto a car rack or up a porch step a two-person job.
Height range and adjustability limits. While the listed ranges cover 5’1” to 6’6”, the seat posts and stems have hard stops. The RadRover’s seat post extends to 14.5 inches of travel; the RadWagon’s extends to 16 inches. If you’re at the absolute top of the range, you may have to run the post at the maximum insertion mark (leaving less than the recommended 2-inch minimum insertion for safety). Consequence of ignoring the insertion mark: The seat post can snap at the clamp if too little is inside the frame, causing a sudden drop while riding. Always verify your actual inseam against the minimum seat insertion line etched on the post. If you need more height, swap to a longer aftermarket post (350mm or 400mm) that meets the minimum insertion spec.
Standover clearance and foot placement. On step-over frames, if your inseam is less than 2 inches above the standover height, you risk hitting the top tube when you dismount unexpectedly. That can cause a fall, especially with the extra weight of the e-bike. If you’re borderline, choose the step-through version—it adds only 2 lbs and removes that hazard.
Related questions
Can I adjust the bike to fit if I’m between height ranges?
Yes, in most cases. The handlebar stem can be raised or lowered about 1.5 inches on models with an adjustable stem (RadCity, RadRover). Seat posts can be swapped for longer aftermarket posts (e.g., 350mm or 400mm) on models with standard 30.9 mm or 27.2 mm diameter clamps. Check your model’s seat-post diameter before buying.
Which model is easiest to pedal without assist?
The RadCity 5 Plus has the narrowest tires (2.3 inches vs. 4 inches on the RadRover) and a more upright riding position, which reduces rolling resistance. Its 62 lb weight still makes it noticeably heavier than a standard hybrid bike, but it’s the lightest in the lineup.
Are step-through frames safe for heavy loads?
Rad Power step-through frames use a reinforced down tube and a wide bottom bracket area to handle the 350 lb payload rating. The frames pass the same ISO 4210 test as high-step frames. The difference is in handling feel, not structural safety.
What’s the maximum rider weight for each model?
Every Rad Power bike supports up to 275 lbs (rider) on folding models and 300 lbs on non-folding models, but the overall payload (rider + cargo) is 350 lbs for most non-folding models and 275 lbs for folding models. The RadWagon 4 lists 350 lbs total. Check your specific model’s manual for the rider-only limit; it’s typically printed on the frame sticker.
Explore This Topic
- Back to Rad Power Weight & Sizing
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Ryan Williams has spent over 8 years testing, repairing, and writing about electric bikes. He has personally ridden and reviewed 150+ e-bike models from brands like Lectric, Aventon, Rad Power, Super73, and dozens more.
Before founding EBIKE Delight, Ryan worked as a bicycle mechanic for 5 years at independent bike shops across California, where he specialized in e-bike conversions and electrical system diagnostics. He holds a Certificate in Electric Vehicle Technology from the Light Electric Vehicle Association (LEVA).
Ryan’s work has been cited by Electric Bike Report, Electrek, and BikeRumor. When he is not testing the latest e-bike on California backroads, he is in his workshop tearing down batteries and controllers to understand what makes them tick — and what makes them fail.
Areas of Expertise
E-bike performance testing and real-world range verificationBattery diagnostics, charging best practices, and safetyBrand comparisons: Lectric, Aventon, Rad Power, Super73, and moreError code troubleshooting across major e-bike systemsE-bike laws, registration, and compliance by state
Ryan believes every rider deserves honest, hands-on information — not marketing hype.