AR-PRO 2.75/3.00-21″ Dirt Bike Inner Tube, 90/90-21 80/100-21 Heavy Duty Motor
The TR4 valve stem ensures secure inflation and easy installation, whether you’re replacing an old tube or prepping for your next motocross adventure. Heat- and cold-resistant, it’s ideal for motocross racing, long-distance touring, and weekend trail riding—making it a must-have for dirt bike enthusiasts.