2.80-4 Innertube

2.80-4 Innertube. This tube is marked 2.8-4 and is the most popular size used on stand-up gas scooters with 4 inch rims.

• 2.80-4 innertube
• Fits 9x3.5-4 tire but can work with many other tires with 4 inch rims.
• Has a bent angle valve stem