The Bridgestone Standard inner tube is designed for tires using the 120/90-18 fitment and features a TR4 straight valve stem. Built for dependable tire service, this tube provides an appropriate replacement solution for compatible motorcycle and powersports applications. The standard tube design supports straightforward installation when paired with a properly sized 18-inch tire and compatible rim.
Manufactured by Bridgestone, this tube is identified by manufacturer part number 543373 and vendor part number 543373. Its 120/90-18 sizing is intended for use with tires marked for the same approved tube fitment. Always compare the tire sidewall, rim specifications, valve stem configuration, and vehicle service information before installation to confirm compatibility. Using the correct tube size helps support proper seating and reliable performance.
The TR4 valve stem offers a practical configuration for inflation and air-pressure checks with compatible equipment. For best results, inspect the tire and rim for sharp edges, debris, corrosion, or other conditions that could damage the tube before fitting. Install the tube carefully without pinching it between the tire bead and rim, inflate it to seat correctly, and maintain air pressure according to the vehicle or tire manufacturer’s recommendations. This Bridgestone Standard 120/90-18 tube is a serviceable replacement component for maintaining compatible tire assemblies.
Features:
- Bridgestone Standard replacement inner tube for compatible motorcycle and powersports applications
- Fits approved 120/90-18 tire applications
- TR4 straight valve stem configuration
- Manufacturer part number: 543373
- Vendor part number: 543373
- Designed for proper installation with compatible 18-inch tube-type tire and rim assemblies