Kenda Heavy Duty Motorcycle Tube 80/100-21 (300/325-21) TR-6 — 2.5mm Tuff Butyl for Off-Road/Motocross

The Kenda 695H5222 Heavy Duty Motorcycle Tube is a 2.5mm-thick butyl inner tube built for motocross and off-road bikes to reduce punctures and pinch flats.

If you ride off-road or race motocross, the right inner tube can mean fewer roadside repairs and longer runs between maintenance. Kenda's TR-6 tube model 695H5222 fits 80/100-21 (300/325-21) tires and uses a straight metal valve stem with premium butyl rubber. The standout feature is its 2.5mm "Tuff" construction—about twice the thickness of many OEM tubes—engineered to resist common punctures and pinch-type flats encountered on rocky, rooty, or rough terrain.

How does the thicker Tuff construction help on rough trails?

The extra 2.5mm wall thickness provides a more durable barrier against nails, thorns, and rim pinch incidents compared with standard tubes. Thicker butyl material absorbs impacts better, decreasing the chance of sudden air loss and making temporary repairs easier if needed.

• 2.5mm heavy-duty butyl resists punctures better than OEM tubes
• Reduced likelihood of pinch flats when landing jumps or running low pressure
• Durability suited for repeated off-road stresses and rough terrain

What tire sizes and valve type does this Kenda tube fit?

This specific Kenda part number 695H5222 is sized for 80/100-21 tires and is compatible with equivalent 300/325-21 designations. It uses a straight metal valve stem (TR-6), which is common for motocross wheels and works with standard pump and compressor fittings.

• Size compatibility: 80/100-21 (300/325-21)
• Valve: straight metal valve stem (TR-6) for easy inflation
• Designed for typical motocross/off-road wheel configurations

Is the material and manufacturing quality reliable for racing and endurance rides?

Kenda constructs this tube from premium butyl rubber, a material known for good air retention and elastic strength. The thicker Tuff profile and metal valve stem are intended to meet the demands of hard off-road use, offering a balance of durability and serviceability.

• Premium butyl rubber for steady air retention and flexibility
• Metal valve stem resists bending and provides secure inflation points
• Manufactured to withstand repeated off-road impacts and stresses

How should I install and maintain this heavy-duty inner tube?

Install the tube following standard procedures: partially inflate for shape, avoid pinching during tire mounting, and seat bead properly before final inflation. Regularly inspect the tube and tire for embedded objects, and keep recommended tire pressures to balance protection and traction.

• Partially inflate tube before fitting to prevent pinches
• Check and remove debris from tire carcass before installation
• Use proper tire pressure to reduce pinch-flat risk while maintaining traction

Who is this for: The Kenda 695H5222 Tuff tube is aimed at motocross riders, off-road enthusiasts, and anyone who needs a tougher-than-stock inner tube for 80/100-21 (300/325-21) tires. If you frequently ride rough trails, compete in off-road events, or simply want increased puncture resistance and a robust valve stem, this heavy-duty butyl tube is a practical upgrade to keep you rolling with fewer interruptions.