Tubes

About

Shark Leathers stocks motorcycle inner tubes across every major wheel size, valve type and application. From 2 mm heavy-duty road tubes to ATV and off-road fitments, every tube is sourced from proven brands including Michelin, Whites, Vee Rubber, Avon, Eurogrip and Tube Moto. Choosing the Right Motorcycle Inner Tube The correct tube specification starts with three fixed numbers: tyre width, aspect ratio and rim diameter. A tube stamped 275/300/360 90/90-18 covers that entire width band on an 18-inch rim, so cross-referencing your tyre sidewall markings before ordering eliminates fitment errors every time. Valve Types Explained Valve choice is determined by your rim valve-hole configuration, not personal preference. TR4 is a straight rubber-stem valve suited to wire-spoked rims. TR6 is the bent rubber-stem variant for rims with an angled valve aperture, common on ATV and motocross wheels. TR13 is an offset rubber-stem design for larger-diameter rims with restricted clearance. Steel-stem variants suit rims where rubber stems risk tearing under sustained high-speed rotation. Wall Thickness and Application Tube Grade Wall Thickness Typical Application Rim Size Standard 1.5 mm Road / scooter 10 to 18 inch Heavy Duty 2 mm MX / enduro / hard enduro 16 to 21 inch Ultra Heavy Duty 3 to 4 mm Rocky enduro, desert racing 18 to 21 inch ATV 2 to 3 mm Quad / ATV off-road 8 to 12 inch Common Fitment Sizes Front MX wheels run 19 or 21 inches; a 70/100-19 tube covers the most common 19-inch front MX fitment. Rear MX wheels use 18 or 19-inch rims. Road bikes typically run 17-inch front and rear. Scooters call for 10, 12 or 14-inch tubes. ATV wheels span 8 to 12 inches. Matching rim diameter within 1 inch of the tube spec prevents pinch flats and burst seams. Installation Inflate any new tube to approximately 10 percent of rated operating pressure before fitting, then deflate fully before seating the bead. Lubricate with tyre mounting paste, not petroleum-based products. Torque valve-s

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