Frisco E-Bike
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E-Bike Tires · Kenda

Kenda Krusade Sport 20x4.0 Fat Tire

The Kenda Krusade is one of the most common 20x4 tires on folding fat e-bikes, which makes it both a like-for-like replacement and an easy place to start when the stock tire wears out. It is a street-leaning tread with a shallow center and small side knobs, so it rolls quietly on pavement and still grips on packed gravel. Kenda sells versions with a puncture-resistant layer; look for that on the listing if flats are your problem. It is a wire-bead tire, so it will not fold for storage, and it is heavy like every 4-inch tire.

Folding fat e-bikes (Lectric XP, Heybike, Engwe and similar 20x4 bikes)Mostly paved riding with some trailRiders replacing a worn stock 20x4 tire

Current price and availability are shown on Amazon.

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Key considerations

  • Confirm 20x4.0 (ETRTO 100-406) — not 20x3.0 or 20x4.25
  • Check your rim width; most fat folders run 60–80 mm rims that suit 4.0 tires
  • Puncture-protected versions cost more and are worth it on debris-filled streets
  • Heavy: a tire and tube swap is a workout on a fat folder

Pros

  • OEM fit for many folders
  • Quiet on pavement
  • Puncture-protected versions available

Considerations

  • Wire bead
  • Heavy
  • Limited loose-terrain grip

Features & specifications

Size20x4.0

Specifications are manufacturer-published figures or our own notes; confirm on the current listing before purchase.

Compatibility notes

  • 20-inch (406 mm) rims in the 60–80 mm width range common on fat folding e-bikes

Goes well with

Related accessories

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Replacement parts

Confirm fitment on your bike before ordering — see each part’s compatibility notes.

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Inner TubesFeatured

20x4.0 Fat Tire Inner Tube, Schrader Valve (generic)

A 20x4 tube is the single most common flat-repair purchase for folding fat e-bikes, and generic listings from brands like Kenda, CST, Sunlite and a dozen house brands are all essentially the same butyl tube. Buy by size and valve: 20 x 4.0 (often printed as 20x3.5-4.0 or 20x4.0-4.5), Schrader valve unless your rim is drilled for Presta, and a valve length that clears your rim. Keep two spares; on these bikes the rear wheel is a chore to remove and you do not want to do it twice for a patch that does not hold.

Best for: Folding fat e-bikes on 20x4 tires · Anyone who wants a couple of spares in the garage · Replacing a tube damaged by a pinch flat

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Bike maintenance in a workshop
E-Bike Tires

CST BFT (Big Fat Tire) 26x4.0

CST's BFT (Big Fat Tire) is a widely fitted original-equipment tire on 26x4 fat e-bikes and one of the cheapest ways to replace a worn one. The tread is a medium-knob all-rounder: it handles hardpack, sand and snow acceptably and hums a bit on pavement, which is the normal deal with fat tires. Wire-bead versions are the common, inexpensive ones; folding versions exist at a higher price. If you spend most of your time on the road, a smoother fat tire will roll easier, but for mixed use the BFT is a sensible default.

Best for: Replacing stock tires on 26x4 fat-tire e-bikes · Mixed pavement and trail riding · Budget-minded riders

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Hands-on bike repair work
Fenders

20x4 Fat Tire Fender Set, Front and Rear (generic)

Fat folding e-bikes throw an impressive rooster tail, and many ship without fenders or with flimsy ones that crack. Generic 20x4 fender sets are wide plastic or alloy mudguards with stays sized for 20-inch wheels and roughly 4-inch tires, sold as a front and rear pair. Fit varies because fork crown and frame bridge designs differ between brands; sets made for a specific model (Lectric, Heybike, etc.) fit better than universal ones. Expect to bend stays and drill a hole or two. Measure your tire width and check the fender is at least 4.5 inches wide.

Best for: 20x4 fat folders that came without fenders · Replacing cracked stock fenders · Rainy-season commuters

View details & where to buy

Sold on Amazon

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