The Bridgestone MX HD heavy-duty inner tube is designed for motorcycle and off-road applications using an 80/100-21 tire. Built to support demanding motocross and trail riding conditions, this tube provides a reliable air-retention solution for compatible front tire assemblies. Its heavy-duty construction is suited to riders who need dependable performance during regular riding, competition, and recreational use.
The integrated TR4 valve stem supports convenient inflation and pressure checks with compatible tire service equipment. Proper tube selection is essential for maintaining tire fitment, handling, and overall riding performance, so confirm that your tire is marked 80/100-21 and that the TR4 valve configuration matches your wheel before installation. For best results, inspect the tire, rim, rim strip, and valve area during installation and replace any worn or damaged components.
This product is manufactured by Bridgestone and is identified by manufacturer and vendor part number 543500. The MX HD inner tube is intended for use as a replacement component in compatible motorcycle tire assemblies. Installation should be completed by a qualified tire professional using appropriate tools and procedures to help prevent pinching, valve damage, or improper seating. Maintain tire pressure according to the motorcycle and tire manufacturer recommendations, and inspect the tube and tire regularly for signs of wear or damage.
Features:
- Bridgestone MX HD heavy-duty inner tube for compatible motorcycle and off-road applications
- Fits 80/100-21 tires when the tire and wheel specifications are compatible
- TR4 valve stem supports inflation and routine tire pressure checks
- Designed for motocross, trail riding, competition, and recreational use
- Manufacturer and vendor part number: 543500