An inner tube is the air-filled tube that sits inside the outer tire. This inner tube is for bikes with a tire size of 20x4.0" The inner tube ensures the correct tire pressure, which is essential for comfort, grip, and stability. Without a good inner tube, the bike cannot ride safely or comfortably.
CST
This contact is responsible for product safety compliance. For help with an order or return, please contact customer service
K-Parts B.V.
K-Parts B.V. CST
Nobelstraat 14A, 3846 CG Harderwijk, Netherlands
kundendienst@k-parts.de
CST
This contact is responsible for product safety compliance. For help with an order or return, please contact customer service
K-Parts B.V.
K-Parts B.V. CST
Nobelstraat 14A, 3846 CG Harderwijk, Netherlands
kundendienst@k-parts.de