Phatfour FLX - Green

Phatfour FLX at GOfatbike

The Phatfour FLX in green is the entry-level model of this hand-built fatbike and immediately one of the most popular choices. It is an electric bike with a classic look, fat tires, and a steel frame that feels sturdy. You sit upright, the motor assists as soon as you start pedaling, and the overall appearance is timeless rather than sporty. Below you can read calmly about what the FLX can do and what to watch out for before you choose.

Design and construction

The appearance of the FLX is inspired by a classic Simplex motorcycle from 1906, which you can see in the rounded shapes and the steel frame. The bike is hand-built and finished with attention to detail, making it feel more solid than an average city bike. The timeless design also ensures that the fatbike does not look outdated after a few years. If you like a recognizable, classic look, this model is a good choice.

Riding position and saddle

You sit upright on the FLX, with a relaxed posture that remains comfortable on longer rides. The two-person saddle provides space and makes it possible to occasionally take someone on the back. The wide setup makes the bike feel stable, even when riding calmly through the city or stopping briefly at an intersection. For those who want to sit comfortably rather than sportily leaning forward, this is a nice setup. Even on longer rides, that posture remains pleasant because your weight is nicely distributed over the saddle and handlebars.

Motor, speed, and regulations

The FLX has a motor with two speeds that supports you up to 25 km/h, within the 250-watt class typical of a regular electric bike. There is no throttle, so the assistance only kicks in when you start pedaling yourself. This means the bike is considered a regular e-bike, and you do not need a license, registration, or helmet. Do not modify the FLX to go faster, as that will void this status and also void your warranty.

Range and battery

With a full battery, you can practically reach around 100 kilometers on a single charge. Consider this a guideline rather than a fixed promise, as your actual range depends on your weight, the wind, tire pressure, and how much assistance you use. If you often ride in the highest setting or against the wind, you will get less distance than on a calm day with light assistance. For daily rides and longer trips, this is usually more than enough. If you mainly make short trips, you only need to recharge occasionally; if you plan a long ride, charge fully beforehand and use the assistance sparingly along the way.

Tires and riding feel

The extra-wide tires provide a lot of grip and absorb vibrations, keeping you stable on the street, cobblestones, or an unpaved path. This makes the FLX pleasant for a calm, comfortable ride without every bump coming through. The comfort has a downside, though, as a fatbike like this is heavier than a regular bike. Lifting and storing it requires more space and strength, something to consider if you often need to bring the bike indoors. With slightly lower tire pressure, the ride becomes softer, while higher pressure rolls more smoothly on smooth asphalt, allowing you to adjust the riding feel to where you mostly ride.

Ordering at GOfatbike

The FLX comes in various colors, and this model is green. If you want extra security on the road, there is Phatfour Connected, which allows you to insure the bike. If you are looking for a fatbike with a classic look and a comfortable, upright seating position, this entry-level model is a logical place to start. The Phatfour FLX is available at GOfatbike.

Also check out: Phatfour fatbikes, all fatbikes and fatbike accessories.