Jasion Thunder Pro vs Rad Power Bikes Radster Trail
Two of the fat-tire & off-road e-bikes in our best fat-tire & off-road e-bikes: rad power, aventon, velotric, jasion & more comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Best for: 1200 W sustained, 115 Nm, 500 lb
Check price at AmazonBest for: 100 Nm off-road Class 1–3 bike
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Jasion Thunder Pro | Rad Power Bikes Radster Trail | Weight |
|---|---|---|---|
| Rated motor powerThe motor's nominal (rated, sustained) output as the maker states it, not the higher peak figure. Peak figures appear in each bike's notes. A bike whose maker publishes only a peak figure scores as the lowest rated figure in the category. | 1200 W | 750 W | 15% |
| Battery capacityBattery capacity in watt-hours. Where the maker lists only volts and amp-hours, we multiply them (for example 48 V x 15 Ah = 720 Wh) and say so in the product's notes. Larger batteries generally go farther under the same conditions. | 1040 Wh | 720 Wh | 20% |
| Claimed rangeThe maker's own maximum range claim, usually in the lowest assist level. Real range depends on rider weight, hills, wind, temperature and assist level, so treat it as a comparison figure, not a promise. Where a maker gives a span, we use the top of it. | 90 mi | 65 mi | 15% |
| Top assisted speedThe highest assisted speed the maker lists, including settings unlocked in the app or display. 28 mph is the Class 3 ceiling, so anything above it scores the same as 28 mph. | 35 mph | 28 mph | 10% |
| Payload capacityThe maker's maximum load for rider plus cargo. Where the maker gives a gross vehicle weight instead, we subtract the bike's weight and say so in the notes. | 500 lb | 370 lb | 15% |
| Bike weightLighter bikes are easier to lift, carry upstairs and ride with the motor off. A weight published without the battery is not comparable, so it shows as Not listed. | 96.6 lb | 77.5 lb | 10% |
| Motor torquePeak torque in newton-metres as the maker states it. More torque helps on hills and when starting with a load. | 115 Nm | 100 Nm | 10% |
| Hydraulic disc brakesYes when the maker lists hydraulic disc brakes. They generally need less hand force than mechanical (cable) discs. | Yes | Yes | 3% |
| Water resistanceThe water digit of the IP rating the maker lists for the bike (the second digit, so IPX5 and IP65 both count as 5). Where only the battery or motor carries a rating, we say so in the notes and leave the bike rating blank. | Not listed | IPX6 class (powerful jets) | 2% |
| Motor | 1200 W sustained (2000 W peak), 115 Nm | 750 W, 100 Nm | info |
| Battery | 52 V 20 Ah (1040 Wh, computed) | 48 V 15 Ah, 720 Wh | info |
| Top speed | 35 mph (above Class 3; see the guide) | Not listed | info |
| Water rating | Not published by the maker | IPX6 | info |
| Range | Not listed | 65+ miles | info |
| RidePick score | 8.7/10 | 6.7/10 | 100% |
Where each one comes out ahead
Jasion Thunder Pro
Better published figure on: Rated motor power, Battery capacity, Claimed range, Top assisted speed, Payload capacity, Motor torque.
What we like
- Top rated motor power in this comparison (1200 W)
- Top battery capacity in this comparison (1040 Wh)
- Top payload capacity in this comparison (500 lb)
- Top motor torque in this comparison (115 Nm)
Watch out for
- Water resistance not published by Jasion
Rad Power Bikes Radster Trail
Better published figure on: Bike weight.
What we like
- Top water resistance in this comparison (IPX6 class (powerful jets))
Watch out for
Verdict
On published specs, the Jasion Thunder Pro scores higher (8.7 vs 6.7). Specs don't capture sound character or feel, so weigh the pros and cons above too.
- Choose the Jasion Thunder Pro if this sounds like you: 1200 W sustained, 115 Nm, 500 lb.
- Choose the Rad Power Bikes Radster Trail if this sounds like you: 100 Nm off-road Class 1–3 bike.
- Jasion Thunder Pro: Jasion: Thunder Pro
- Rad Power Bikes Radster Trail: Rad Power Bikes: Radster Trail