Rear trip 2,75/300-12 for motocross

033-250 trip 80 / 100-12 or 2,75 / 300-12 for rear tire 12p motocross
This 80 / 100-12 (3.00x12) inner tube (innertube) is usually (but not exclusively) associated with 50cc, 70cc, 90cc, 110cc, 125cc, 140cc, 150cc, 155cc and 160cc motorcycles / pit bikes. Most often used as a rear wheel tube at the rear / 14 inch front 12 inch configurations.

Commonly associated denotations:

80 / 100-12
2.75 to 12
2.75 / 3.00 to 12
3.00 to 12