CST

Thick Butyl Tube 20x3.5-4.5 SV 

The CST Thick Butyl Tube 20x3.5-4.5 SV delivers dependable performance for riders who want a tough, long-lasting tube that can handle everything from everyday cruising to heavier-duty use. Built with a thicker butyl rubber construction, this tube offers enhanced puncture resistance and consistent air retention—ideal for keeping your ride smooth and stress-free.

Whether rolling on a fat-tire BMX, cargo bike, or e-bike, this tube provides reliable support and durability for wide 20-inch tires. The Schrader valve design makes inflation simple and compatible with most standard pumps, while the high-quality materials ensure fewer flats and more time on the move.

Key Features:

• Thick butyl construction for improved puncture protection and air retention
• Fits wide 20” tires ranging from 3.5" to 4.5"
• Schrader valve for easy inflation and compatibility with standard pumps
• Durable design ideal for e-bikes, cargo bikes, and fat-tire setups
• Reliable performance for general-purpose and heavy-duty riding

The CST Thick Butyl Tube keeps your ride rolling longer, giving you the confidence to tackle every trip without worrying about what’s under you.