About this item:

ULTRA-THICK PUNCTURE RESISTANCE: Tired of sudden flats? Our 26x4.0 fat tire tubes are crafted with upgraded Standard butyl rubber, significantly thicker than standard tubes to withstand sharp thorns and rough trails. Experience 20% higher puncture resistance for worry-free riding on any terrain.

OPTIMIZED FOR E-BIKES & HEAVY LOADS: Engineered specifically for the high-speed and heavy-weight demands of Electric Bikes (e-bikes). These 26x4.0 inner tubes offer superior air tightness and structural stability, ensuring consistent tire pressure for safer commuting and long-distance adventures.

SMOOTH SHOCK ABSORPTION: Say goodbye to bone-shaking bumps. The premium butyl rubber material provides excellent vibration damping and shock absorption, delivering a smoother, more comfortable ride whether you're cruising on sandy beaches, snowy paths, or rocky mountain trails.

VERSATILE COMPATIBILITY & SPECS: Perfectly fits 26-inch fat tires with widths between 3.5'' to 4.5''. Each pack includes two 26x4.0 inner tubes and two durable tire levers for quick replacement. Features a standard 32mm Schrader Valve (AV) with a dust cap to prevent air leakage.

READY FOR ALL-TERRAIN ADVENTURES: Whether it's your daily commute or a weekend off-road trip, our reliable inner tubes keep you moving. Compatible with a wide range of Fat Tire Electric Bikes, Beach Cruisers, and Mountain Bikes. Stay prepared and keep a spare in your kit for uninterrupted fun.

Q：Is the size the diameter of the metal rim or the rubber tire?

A：Read the side wall of the tire for proper inner tube sizing. The first number is the diameter of your wheel, the second is the width. 

Q：Is it easy to install? What tools do I need?

A：Easy installation with basic tools: tire levers + bike pump. Steps: 1) Deflate & remove wheel; 2) Pry tire off rim with levers; 3) Remove old tube; 4) Insert slightly inflated new tube to avoid pinching; 5) Reseat tire; 6) Inflate to recommended PSI.

Q：Are these inner tubes resistant to extreme temperatures? Can I use them in summer/winter?

A：Yes! Our butyl rubber inner tubes have excellent temperature resistance (-40°F to 140°F). They won’t harden/crack in cold winter (snow/ice) or soften/leak in hot summer (pavement heat). Perfect for year-round riding in all US climates.

Q：What is the valve length of your inner tubes? Is it suitable for deep rims?

A：Our inner tubes feature a standard 32mm valve stem (35mm with cap), compatible with 99% of standard bike rims (mountain, road, city bikes). For deep-section rims (>40mm), use a sold-separately Presta valve extender for easy inflation.

Q：Can I use a Schrader valve inner tube on a Presta valve rim?

A：No, they are not directly interchangeable. Schrader valves need an 8mm rim hole, while Presta valves only need a 6mm hole. If you drill the Presta rim hole larger to fit Schrader valve, it will damage the rim and affect safety.