[Research Pick] VIVI F26FUL Fat Tire E-Bike: Specs, Price & What to Check Before You Buy
Research Pick: this VIVI F26FUL post is built from VIVI’s own published specs and pricing…, not a hands-on test. BuyOrBypass hasn’t ridden this bike yet, so there’s no Buy or Bypass verdict here — just what’s on paper and what we’d want to check in person before buying. Contains an affiliate link; see our Affiliate Disclosure for details.
E-bikes aren’t one of our five core categories, but a few readers asked about the VIVI F26FUL after we mentioned we’d looked at VIVI’s lineup — so we’re covering it here in Deals & Picks instead of pretending we’ve put one through our usual test process.
VIVI’s catalog spans commuter, mountain, folding, cruiser, and cargo e-bikes, but fat tire is where the brand concentrates most of its lineup — it’s the category their site pushes hardest and where most of their model variants sit. The F26FUL is the clearest example of what that line offers on paper.
At a Glance
| Spec | F26FUL |
| Motor | 1000W peak brushless hub motor, 75Nm torque |
| Battery | 48V 12.8Ah (614Wh) — Pro version: 48V 18Ah (864Wh) |
| Range (claimed) | Up to 50–60 miles in pedal-assist mode |
| Top speed (claimed) | 25 mph |
| Tires | 26 × 4.0″ fat tires, 30TPI anti-puncture, alloy double-wall rims |
| Gearing | Shimano 7-speed |
| Controller | 48V 20A brushless motor controller |
| Weight | 28kg / 62 lbs (with battery) |
| Certification | SGS certified to UL2849 |
| Price | $599.99 (regular $999.99) — Pro battery version $899.99 |
Two Battery Options
The F26FUL ships with a 614Wh removable battery at the base price. There’s also a “Pro” version with an 864Wh battery for $899.99 — VIVI doesn’t publish a separate range figure for the Pro pack, so the extra ~40% capacity likely stretches real-world range somewhat past the base bike’s claimed 50–60 miles, though by how much isn’t stated.
What Stands Out on Paper
- Torque over cadence: a 75Nm hub motor is a meaningful spec for a bike in this price range — most budget fat-tire e-bikes sit lower, which matters more for hill starts and loaded riding than top speed does.
- Removable battery: lets you charge indoors instead of hauling an extension cord to the garage, and makes replacement cheaper than a sealed pack down the line.
- UL2849 certification: this is the electrical/fire-safety standard that matters most for e-bike batteries and chargers — worth confirming on any e-bike you’re considering, not just this one.
What We’d Want to Check Before Buying
This is the part a spec sheet can’t answer, and it’s exactly the gap between a Research Pick and a real Tested Verdict:
- Real-world range vs. the claimed 50–60 miles. Manufacturer range figures are almost always measured under light-rider, flat-terrain, lowest-assist conditions — actual range with a heavier rider or hills is typically lower.
- Brake type. VIVI’s spec sheet mentions “alloy levers with motor cutoff switch” but doesn’t clearly state mechanical vs. hydraulic disc brakes — that distinction matters a lot for stopping power and maintenance.
- Payload/weight capacity. Not listed on this product page — worth confirming directly with VIVI if you’re a heavier rider or plan to carry cargo.
- Assembly and post-purchase support. Shipped e-bikes usually need partial assembly; check what’s included and how VIVI handles warranty claims in your region before you buy.
Where It Sits on Price
At $599.99 against a stated $999.99 regular price, the F26FUL lands in the budget-to-midrange fat-tire e-bike bracket, where 1000W motors and UL2849 certification aren’t a given at that price point. Whether that’s a good deal depends on how it compares to other fat-tire e-bikes you’re weighing — which is exactly the kind of thing we’d rather test than guess at.
This is a Research Pick, not a Tested Verdict — see Our Method for what separates the two on BuyOrBypass. If we get hands-on time with a VIVI bike, we’ll publish a full test and update or replace this post.
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