Vee Tire 20" Fat Bike Tube - 20x4.0 Fits 3.50" to 5.00" wide

Universal Fit: Heavy-Duty 20" Fat Bike Inner Tube

Keep your adventure rolling with the Vee Tire Co. 20" Fat Bike Tube. Engineered to handle the high-volume requirements of modern electric and all-terrain fat bikes, this tube features a massive expansion range. While optimized for 20x4.0 tires, its high-elasticity butyl rubber safely accommodates widths from 3.50" up to 5.00", making it the most versatile emergency tube for your gear bag.

Technical Performance Features

• Wide-Range Compatibility: A single tube covers 20-inch tire widths from 3.50" to 5.00", reducing the need to carry multiple spares for different bike setups.
• Heavy-Duty Butyl Rubber: Consistent wall thickness provides superior air retention and increased resistance to pinch flats during low-pressure off-road riding.
• Standard 40mm Schrader Valve: Compatible with all standard floor pumps, CO2 inflators, and gas station air compressors.
• Cross-Platform Versatility: Also compatible with 90/100-16 and 3.50/4.00-16 motorcycle-style tire and tube configurations.

Comprehensive Fitment Guide

This tube is the standard replacement for the fat tire e-bike category, including:

Technical Specifications

• Size Range: 20 x 3.50, 4.00, 4.50, 5.00 inches
• Metric Fitment: 90–127 x 406
• Also Compatible With: 90/100-16 and 3.50/4.00-16 tire/tube sizes
• Valve Type: Schrader (AV 40mm)
• Weight: 350 grams
• MPN: 120AA4000A
• SKU: 136-130
• Made in: Thailand

Mechanic's Note: Fat bike tubes are large and can easily get pinched between the tire bead and the rim during installation. Inflate the tube just enough to give it a round shape before tucking it into the tire. Always check that no part of the tube is visible under the tire bead before full inflation.

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