Our standard butyl innertube with a 0.9mm wall thickness that represents excellent value-for-money and strikes a nice balance between weight and durability.
The new ContiTube bicycle tube program makes it easier for you to find the ideal tube for your cycling demands. The user-friendly tube system is suitable for any size, length, design, type of valve and perfect for any tire dimension and riding occasion.
![CST Tire 27 x 1-1/4 Gumwall 90PSI [C638]](https://cdn.shoplightspeed.com/shops/640313/files/68111844/356x356x2/cst-tire-27-x-1-1-4-gumwall-90psi-c638.jpg)
