80100-21 2_753_00-21 Tube 11090-18 4_103_5-18 Inner Tubes Replacement for Dirt Pit Bike Motorbikes Front Rear Inner Tubes Heavy Duty with Valve Stem Straight 2 Pack

Power Sports Galaxy 80/100-21 (2.75/3.00-21) Inner Tubes Replacement for Dirt Pit Bike Power Sports Galaxy 110/90-18 (4.10/3.5-18) Inner Tubes Replacement for Dirt Pit Bike Brand new repalcement 80/100-21 and 110/90-18 inner tube with Straight Valve for Dirt Pit Bike with 18'' & 21'' tires 80/100-21 Tube Fits on these tires: 80/90-21, 80/100-21, 2.75/3.00-21, 275/300-21, 300/325-21 110/90-18 Tube Fits on these tires: 4.00/4.50-18, 110/90-18, 110/100-18, 120/80-18, 120/90-18, 130/70-18, 130/80-18, 4.10-18, 350/400-18 Specification Metal straight Valve Stem Valve Stem Length : Approx. 3.9cm/1.54" Material: Isobutylene Isoprene Butyl Rubber This inner tube is made from brand new isobutylene isoprene rubber, designed specifically for off-road and dirt bike, which is better than natural rubber in air tightness, elastic damping and aging resistance.