MICHELIN Ultra Heavy Duty 21" Inner Tube – TR-4 Center Metal Valve | Part #73810

MICHELIN Ultra Heavy Duty 21-Inch Inner Tube – TR-4 | Part #73810

Engineered for serious off-road performance, the MICHELIN 21" Ultra Heavy Duty Inner Tube (Part #73810) features a reinforced 4 mm wall thickness and a center-mounted TR-4 metal valve to deliver maximum puncture resistance and reliable inflation retention on the most demanding terrain.

Key Features

• 4 mm Reinforced Wall Thickness: Significantly reduces puncture and pinch flat risk on rocky, rooted, or debris-covered trails.
• TR-4 Center Metal Valve: Airtight seal with straightforward inflation and deflation — compatible with standard valve tools and pump heads.
• Ultra Heavy Duty Build: Designed to handle sustained high-load use and harsh environmental exposure without premature wear or failure.
• 21-Inch Fitment: Sized for 21" front wheel applications common on enduro, motocross, trail, and adventure motorcycles.
• MICHELIN Engineering: Manufactured to MICHELIN’s exacting standards for tire technology, ensuring consistent quality and performance.

Specifications

• Brand: MICHELIN
• Part Number (MPN): 73810
• SKU: 73810
• Tube Size: 21 Inch
• Wall Thickness: 4 mm (Ultra Heavy Duty)
• Valve Type: TR-4 Center Metal Valve
• Weight: 4.3 lbs
• Application: Off-road motorcycle, enduro, motocross, trail, adventure

The Right Tube for Demanding Riders

The 21" front wheel is the most common size on off-road and dual-sport motorcycles, and it takes a beating on technical terrain. The MICHELIN #73810 ultra heavy duty tube is purpose-built to absorb that punishment — keeping you on the trail longer and reducing costly flat-related downtime. Pair it with your favorite knobby tire for a bulletproof front wheel setup.