Author Tube AT-CMP-24 AV32 24x1.50/2.20 Inner Tube (Black)

24-inch butyl inner tube with a 32 mm Schrader valve, engineered for tire widths from 1.50" to 2.20". The ETRTO 40/55-507 sizing makes it a precise fit for 24" mountain, kids' and city bikes. High elasticity and reliable air retention keep you rolling longer between top-ups.

Overview

The Author Tube AT-CMP-24 AV32 is a dependable replacement tube for 24-inch wheels. Its butyl rubber construction balances flexibility and durability, while the removable valve core allows easy pressure adjustment or sealant injection. A plastic valve cap protects the Schrader valve from dirt and moisture.

What stands out

• Wide tire compatibility: fits 1.50" to 2.20" widths, covering most 24" MTB, city and kids' tires.
• 32 mm Schrader (AV) valve with removable core for hassle-free inflation and maintenance.
• Butyl rubber compound provides high elasticity and excellent air retention, reducing the need for frequent pumping.
• ETRTO 40/55-507 ensures a correct match with 24" clincher rims.
• Standard 0.9 mm wall thickness offers a good balance of weight and puncture resistance for everyday riding.

Technical details

• Wheel diameter: 24 inch
• ETRTO size: 40/55-507
• Compatible tire width: 1.50" – 2.20"
• Valve type: Schrader (AV), 32 mm length
• Valve core: Removable
• Material: Butyl rubber
• Tube thickness: Standard (approx. 0.9 mm)
• Valve cap: Plastic
• Application: Mountain bikes, kids' bikes, city bikes
• Packaging: Single tube

Our verdict

A straightforward, reliable inner tube that covers the most common 24-inch tire sizes. The removable valve core and solid butyl construction make it a practical spare for everyday riders.