2-PCS 20x4 Heavy Duty Bike Tubes 102-406 20x4.0 Self Sealing Inner Tubes 20'' A

Upgrade your fat bike’s performance and reliability with thisrugged 20x3.5/4.0 Inner Tube, engineered for maximum puncture resistance, superior shock absorption, and all-weather durability. Universal Fit (20" Fat Bike Tyres): Compatible with a wide range of 20” fat bike tires from 3.5" to 4.0" wide.

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