Michelin - Off-Road Tire Tubes with TR4 Valve Wheel size:21"-90/90, 80/100 A larger platform with better

A larger platform with better peg traction & much improved comfort

Trail Wing & Battle Wing - Original Equipment A 4-ply front/rear combination designed primarily for dual sport use

The better scenario is avoidance of that altogether by switching out that thin OEM cast clutch cover now with a super-chunky

Flexible performance

Technically stronger – more Heavy Duty

Michelin - Off-Road Tire Tubes with TR4 Valve Wheel size:21"-90/90, 80/100 A larger platform with betterKey Benefits Michelin quality and reliability Each size is designed for only a few specific applications, so that tube and tire match properly Product Specifics Premium quality inner tubes Heavy duty tubes available for off road applications Broad selection of sizes to fit almost any application