20x4.0 inner Tube with straight Valve

20x4.0 High-Performance Inner Tubes - Set of 2

Upgrade your ride with these ultra-durable 20x4.0 Fat Bike inner tubes (ETRTO 100-406).
Built with reinforced construction, they offer superior resistance to punctures and pinch flats, ensuring a smooth and secure ride - whether on pavement, trails, sand, or even snow.

Compatibility: Which Tires Fit?

These inner tubes are compatible with large road and off-road tires with the following sidewall markings:

• 20x4
• 20x4.0
• 20x4.00
• 20x4 1/4

Why Choose These 20x4.0 Inner Tubes?

1. Enhanced Durability - Optimized thickness to reduce the risk of flats and extend lifespan.
2. Straight Schrader Valve - Easy inflation with any standard pump or air compressor.
3. Comfort & Stability - Absorbs shocks effectively for better control and a smoother ride across all terrains.
4. Versatile Performance - Ideal for city commuting or extreme off-road adventures.
5. Premium Quality - Made from high-grade rubber for long-lasting performance.

Technical Specifications

• Size: 20 x 4.0 inches
• ETRTO Standard: 100-406
• Valve Type: Straight Schrader (Auto Valve)
• Valve Length: 33 mm
• Packaging: Set of 2 inner tubes
• Recommended Use: Electric fat bikes, large-tire MTBs, and off-road scooters.

👉 Looking for more Fat Bike inner tubes? Check out our full selection of large-diameter inner tubes on this dedicated page.

Installation & Inflation Tips

• Before Installation: Check your tire for debris such as thorns, glass, or small stones that could cause a puncture.

• Inflation Pressure: Refer to your tire’s sidewall for the recommended pressure. Example: "Inflate to 30 psi (2.0 bar)" means the inner tube should be inflated up to 30 psi (2 bars) for optimal support.

Ensure a worry-free ride with these premium 20x4.0 inner tubes, built to handle the toughest conditions!