The best inner tube in the world.
R21 front inner tube for 80/100, 90/90, and 90/100 tires.
This product needs no introduction; for years, it has been appreciated worldwide for its versatility, durability, and performance.
RECOMMENDED PRESSURE:
HARD ENDURO / ENDURO: 0.5/0.6/0.7 bar
ADVENTURE / RALLY: 1.0/1.2/1.3 bar
