Astonic inner tube 20"

Cruising on your Astonic is totally carefree, our advice is always to have an inner tube in stock. Even on holiday, make sure you have one with you so you're quickly back on the road.

• Air supply 2.5 bar*
• Contains one inner tube
• 20" x4'' inner tube

*Preferred 2-2,5 bar may vary depending on terrain and user weight.

Before fitting a new inner tube, always check the outer tube to ensure that it does not contain any sharp objects.

mounting level front wheel medium

mounting level back wheel hard