This is the heavy-duty thorn-resistant 12-1/2″ x 2-1/4″ inner tube that you want on your mountain scooter
Flats are no fun to change, especially 10 miles down the trail
30 Day Warranty Description

This is the heavy-duty thorn-resistant 12-1/2″ x 2-1/4″ inner tube that you want on your mountain scooter. Flats are no fun to change, especially 10 miles down the trail. This extra thick rubber tube makes your ride a little more worry-free. This size is also sometimes referred to as 12-1/2×1.75×2-1/4.