This heavy-duty motorcycle tube is designed for serious riders who demand reliability and durability. With its robust 3mm thickness, this tube offers superior puncture resistance and longevity compared to standard tubes. The 80/100-21 size makes it perfect for front wheel applications on many dirt bikes and off-road motorcycles. Built to withstand challenging terrain and intense riding conditions, this tube features quality rubber construction and a reliable valve stem. The thick wall construction helps prevent pinch flats while maintaining excellent air retention. Whether you're hitting challenging trails or navigating rough terrain, this motorcycle tube delivers the dependable performance you need. Compatible with both bias and radial tires of matching size, this tube is an essential component for riders looking to maximize their bike's performance and minimize downtime from flats. SIZE SPECIFICATIONS: Heavy-duty motorcycle inner tube designed for 90/90-21 or 80/100-21 (3.00 X 21) tire size, perfect for front or rear wheel applications CONSTRUCTION: Features robust 3mm thick rubber construction for superior durability and puncture resistance in demanding conditions VALVE DESIGN: Equipped with a reliable rubber valve stem that ensures consistent air pressure maintenance COMPATIBILITY: Suitable for most dirt bikes, motocross, and off-road motorcycles requiring 90/90-21 or 80/100-21 (3.00 X 21) size tubes PERFORMANCE: Enhanced thickness provides excellent protection against pinch flats and extends tube life in rough terrain ASIN B0DPFX66HL Size 80/100-21 Bike Type Motorcycle Brand Name ZTTM Unit Count 1.0 Count Valve Type Schrader Wheel Size 21 Inches Manufacturer ZTTM Model Number Motorcycle Inner Tube Item Diameter 21 Inches Material Type Rubber Included Components Motorcycle Inner Tube Manufacturer Part Number 188-695-0001 Compatible Tire Width Maximum 80 Millimeters Compatible Tire Width Minimum 80 Millimeters