13x5.00-6 inch inner tube is excellent replacement for Dirt Quad (tire size 13 x 5.00-6 inch or 145/70-6). Please note that versions 19+ of the Dirt Quad use a 12x5.00-6 inch inner tube. Please check your tire size before purchase. Also fits 5.30-6 inch and 4.50-6 inch size tires. Heavy duty inner tube with TR87 angled valve stem Fits for small ATVs, go-karts, buggies, wagons, lawn mowers, garden that use tire size 13x5.00-6 inch Made from rubber, NOT recap, is better in air tightness, elastic damping and aging resistance Before installing, check to see if the inner tubes are completely sealed by putting them in water, if there are any , they are already damaged. 13x5.00-6 inch inner tube works with versions 1-18 of Dirt Quad, replacement tube Part # W25143060078. Compatible Models for Reference: for Dirt Quad(version 1-18) for ActiveCare 4410 for Carter 2575 - SX Carter 2606 - SX Kart-2 Carter Super Wheel for Moto MM-K80R for MT-ATV Mini Quad for Motovox MGK10 Go-Kart Motovox MGK11