Looking for a replacement inner tube for your bike? We have the 20x1.75/2.125 BIKE TUBES for you.

• easy to assemble and disassemble


• made of good quality rubber


• equipped with a 33 mm high Dunlopv DV valve


• fits 20-inch wheels


• inner tube size in the ETRTO system

A good inner tube is an essential part of any bicycle, providing the wheel with the right amount of flexibility. The 20x1.75/2.125 BICYCLE GEAR inner tube will allow you to properly equip your bike.

How to choose a bicycle inner tube?

The purpose of a good inner tube is to maintain the correct tire pressure. One of the criteria for choosing a bicycle inner tube is its proper fit. The most important parameter is the appropriate size and type of valve used to inflate the tube. There are three types of bicycle valves available: Dunlop (bicycle valve), AV (also known as a car valve), and Presta (French valve).

• Material: butyl rubber


• Size: 20 inches x 1.75/2.125


• ETRTO: 47 – 406; 57 - 406


• Valve: DV (Dunlop) length 33mm


• Self-assembly: yes


• Color: black


• Net weight: 0.152 kg


• Gross weight: 0.165 kg