CST 20x3.50/4.00 Extra-Thick Fat Tyre Inner Tube – Straight Schrader Valve

Upgrade your ride with the CST 20x3.50/4.00 Inner Tube – built tough for fat tyre e-bikes, scooters, and mini bikes. This heavy-duty inner tube is crafted from premium butyl rubber and features an extra-thick wall for maximum puncture resistance, making it ideal for high-load or off-road use.

Designed with a straight Schrader valve (American-style), this inner tube is compatible with most standard pump heads and offers easy inflation. Perfect for CST fat tyre users or any 20-inch wheel running 3.50" to 4.00" width tyres.

Features:

• Size: 20 x 3.50/4.00

• Brand: CST (Cheng Shin Tire)

• Valve Type: Straight Schrader (AV / American Valve)

• Ideal for: Fat tyre electric scooters, e-bikes, mini bikes & mobility devices

• Extra thick walls for durability and puncture resistance

• Suits wheels requiring 20" fat tyres

Compatibility:

• Suitable for most fat tyre setups including off-road e-bikes and mini scooters

• Commonly used with 20-inch rims in 3.50" or 4.00" tyre width

Specifications:

• Valve Length: Approx. 32mm

• Material: High-grade butyl rubber

• Weight: Heavier construction for enhanced protection

Please Note: Check your existing tyre or rim markings to confirm compatibility before purchase.