Quick answer: The Eunorau E-FAT-STEP is a step-through folding fat-tire e-bike built for comfort and capability. A 500W rear hub motor with 80Nm of torque, 20 by 4 inch fat tires, and a 48V battery good for 40 to 50 miles make it capable on light trails, snow, and city streets. It is the more refined sibling of the E-FAT-MN, adding an easy-mount step-through frame, 160mm hydraulic disc brakes, and an integrated brake light. Prices change, so check current pricing.
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Folding fat-tire e-bikes are great for tight storage and big fun, but many make you climb over a high frame and settle for basic brakes. The Eunorau E-FAT-STEP fixes both. It is the step-through, upgraded version of the popular E-FAT-MN, and it keeps the fat-tire capability while adding comfort and safety features. Here is how it rides, its full specs, and who it is for.
What is the Eunorau E-FAT-STEP?
The E-FAT-STEP is a compact, folding fat-tire electric bike with a low step-through frame. It pairs a 500W rear hub motor with 20 by 4 inch fat tires and a 6061 aluminum frame that folds at the main tube and telescoping stem. Compared with the E-FAT-MN, it steps up to hydraulic brakes and an integrated brake light, and comes in four colors.
The low standover and small 20-inch wheels make it one of the easiest fat bikes to mount, which is a big deal if a high top tube has kept you off fat bikes before. It is aimed at riders who want capability and comfort: commuters, campers, and anyone who values an easy on-and-off ride.
Eunorau E-FAT-STEP specs
Here are the key specs at a glance. The highlights are a strong motor, true fat tires, and, unlike the base model, hydraulic brakes and full integrated lighting.
|
Spec |
Detail |
|
Motor |
48V 500W rear hub (up to 750W peak), 80 Nm |
|
Battery |
48V 12.5Ah lithium-ion, locking and removable |
|
Range |
About 40 to 50 miles with pedal assist |
|
Top speed |
About 20 mph |
|
Tires |
20 x 4.0 Kenda fat tires |
|
Brakes |
160mm hydraulic disc, front and rear |
|
Drivetrain |
Shimano 7-speed |
|
Frame |
6061 aluminum, folding, step-through |
|
Payload |
330 lb |
|
Weight |
About 63.6 lb |
|
Lights |
Headlight plus integrated brake taillight |
How does the E-FAT-STEP ride?
It rides confidently for a compact bike. The 500W rear hub delivers a continuous 500 watts, with up to 750 watts of peak power and 80Nm of torque, enough to climb hills and accelerate briskly. The 20 by 4 inch Kenda fat tires grip and float over dirt, gravel, and snow, and the low step-through frame makes starting and stopping in traffic easy.
The standout upgrade is the braking. The 160mm hydraulic disc brakes with a motor cutoff give strong, consistent stopping in wet and dry conditions, a clear step up from mechanical brakes. Like most bikes in this class, pedal assist is cadence-based, so most riders tap the throttle to get moving, especially on a hill, then settle into the five assist levels.
Battery, range, and folding
The E-FAT-STEP runs a 48V 12.5Ah battery that locks under the saddle and removes for easy charging, keeping the weight low and balanced. It is rated for about 40 to 50 miles per charge with pedal assist. The frame folds at the main tube and drops the telescoping stem, shrinking the bike to fit many car trunks and RV storage bays.
One practical note: at about 63.6 pounds, this is not a light bike, so the fold is most useful for stowing it in a vehicle rather than carrying it far. The removable battery is a real plus for charging inside an RV or apartment, and a larger-capacity battery is sometimes available for extra range.
What is included, and who is it for?
The E-FAT-STEP comes well equipped: a rear rack, fenders, a front headlight, an integrated brake taillight, a chain bash guard, and a comfort saddle are included. It suits riders who want an easy step-through mount with real fat-tire capability, including commuters, campers, and RV or van travelers, and it fits riders roughly 5 feet 6 inches to 6 feet 1 inch.
With four color options and a low, approachable frame, it is a friendly choice for newer riders and anyone who wants comfort without giving up off-road ability. The integrated brake light is a genuine safety plus for road and evening riding.
E-FAT-STEP vs E-FAT-MN
The two share the same 500W folding fat-bike platform, but the E-FAT-STEP is the more refined, comfort-focused model. It adds a step-through frame, 160mm hydraulic disc brakes, and an integrated brake taillight, addressing the main drawbacks of the base bike. The E-FAT-MN uses a mid-step frame with mechanical brakes and no rear light, at a lower price.
If budget is the priority, the E-FAT-MN still delivers the core fat-bike experience. If you want easier mounting, stronger brakes, and better lighting, the E-FAT-STEP is worth the step up. Read our full E-FAT-MN review to compare.
Pros and cons
Pros:
● Easy step-through frame and low 20-inch standover
● 160mm hydraulic disc brakes for strong, reliable stopping
● Integrated brake taillight plus headlight for road safety
● 500W hub with 80Nm climbs hills and grips snow and dirt
● Removable battery, rack, and fenders included
● Folds for a trunk or RV, with four color options
Cons:
● Heavy at about 63.6 pounds, so folding helps storage more than carrying
● Cadence pedal assist, so you will use the throttle to start, especially on hills
● Basic display by modern standards
● One battery size, though a larger option is sometimes available
Frequently Asked Questions
What is the difference between the E-FAT-STEP and the E-FAT-MN?
They share the same 500W folding fat-bike platform, but the E-FAT-STEP is the more refined, step-through version. It adds an easy-mount step-through frame, upgraded 160mm hydraulic disc brakes, and an integrated brake taillight, where the E-FAT-MN uses a mid-step frame with mechanical brakes and no rear light.
How far can the E-FAT-STEP go on a charge?
The E-FAT-STEP is rated for about 40 to 50 miles per charge with pedal assist, using its 48V 12.5Ah battery. The battery locks and removes from under the saddle for easy charging, and a larger-capacity battery is sometimes available for more range.
Does the E-FAT-STEP have hydraulic brakes?
Yes. The current E-FAT-STEP comes with 160mm hydraulic disc brakes on both wheels, with a motor cutoff for safety. That is an upgrade over the mechanical brakes on the base E-FAT-MN, giving stronger, more consistent stopping in wet and dry conditions.
Is the E-FAT-STEP good for shorter riders?
Yes. Its step-through frame and small 20-inch wheels give a low standover that is easy to mount, and it suits riders roughly 5 feet 6 inches to 6 feet 1 inch. The step-through design also makes it easier to get on and off with cargo.
Does the E-FAT-STEP fold?
Yes. It folds at the main frame tube and telescoping stem, so it fits in many car trunks and RV bays. At about 63.6 pounds it is not light to lift, so the fold is most useful for storage and transport in a vehicle rather than carrying it far.
The Verdict: A Comfortable, Capable Step-Through Fat Bike
The Eunorau E-FAT-STEP takes the value fat-bike formula and makes it more comfortable and safer, with an easy step-through frame, hydraulic brakes, and full integrated lighting. It is heavier than a slim commuter and uses cadence assist, but for riders who want an approachable, do-anything folding fat bike, it is an easy recommendation. Check current pricing, since deals change often.
Want to compare it with other options? Browse our fat tire e-bike reviews and see our e-bike battery and range guide for help choosing. Ready to buy? Check the current price.
