Jasion Fat Tire Electric Bike 48V 15Ah

A steep route, loose sand, or a long ride can make a basic commuter bike feel limiting. The Jasion RetroVolt pairs a peak 2000W motor with 20 x 4-inch fat tires, a removable 48V 15Ah battery, and full suspension, giving it a more trail-ready setup for commutes and weekend rides.

It also has a 7-speed transmission and a listed top speed of 30MPH. The advertised 70-mile range is a stated maximum, not a promise for every ride.

Technical details

The motor is rated at 2000W peak with up to 99Nm of torque. Those figures point to a bike designed to help on hills and varied surfaces, while the 7-speed gearing gives you another way to adjust your pedaling. The 20 x 4-inch tires are the standout choice here: they create a wider contact patch than standard commuter tires, which fits the product’s intended use on beaches, rocky roads, and other mixed terrain.

The battery is removable and listed as 48V 15Ah. The bike also has full suspension and an IPX6 rating. The product name lists five riding modes, but the accompanying details name four: pure electric, electric assist, pure pedal, and cruise. That mismatch is worth noting if having a particular mode matters to you.

Getting the most from it

There’s no compatibility or fit information in the supplied details, so they don’t establish whether the frame or riding position will suit a particular rider. Battery charging time, bike weight, and dimensions are also not provided. Those gaps matter if you need to carry it up stairs, store it in a tight space, or plan rides around a precise charging schedule.

From the way it is set up, this is aimed at riders who want more than a lightweight, pavement-focused e-bike. A short commute with a stretch of rough path, for example, makes better use of the fat tires and suspension than a smooth, flat route where a simpler bike may be enough.

Usage tips

For a mixed-surface ride, choose a route that lets the wide tires earn their keep: pavement into a rocky path or a beach-area ride, rather than buying this mainly for a short trip on smooth streets. On a hill, the 7-speed gearing gives you a pedaling adjustment alongside the listed electric modes. The removable battery may also be useful when you’d rather take the battery indoors than bring the whole bike with you.

The stated range and speed are useful for comparing models, but the provided information doesn’t say how they change with riding conditions. If your route depends on a specific distance or pace, leave room for that uncertainty instead of treating either figure as guaranteed.

Practical doubts

Can the battery be removed? Yes. The product name identifies the 48V 15Ah battery as removable.

How many riding modes does it have? The name says five, while the supplied description lists four: pure electric, electric assist, pure pedal, and cruise. The details don’t explain the difference.

Are the tires intended for more than pavement? The product information names beaches, mountains, snow, and rocky roads as possible terrain. That’s an intended-use claim, not a guarantee of traction on every surface.

When it makes sense

It suits you if you want an electric bike with wide tires, full suspension, and a removable battery for commutes that include rougher sections or for varied weekend rides. You may want to skip it if you mainly ride smooth pavement and would rather prioritize a simpler setup, or if you need confirmed weight, dimensions, or charging details before choosing. The RetroVolt’s appeal is its off-pavement-leaning configuration, those missing practical specifications make it harder to judge for storage and precise trip planning.