Description
A quality inner tube is the foundation of reliable tire performance, whether you’re pushing hard on the track or tackling technical off-road terrain. The BRIDGESTONE Heavy Duty TR-4 tube is engineered to withstand the demands of high-performance riding with consistent pressure retention and durability. Choose a proven OEM-grade component and eliminate the uncertainty of sidewall failures or slow leaks that can compromise your ride.
- Size: 80/100-21
- Valve Type: TR-4 (Straight)
- Manufacturer: BRIDGESTONE
- MPN: 543500
- Application: Street and off-road
- Construction: Heavy-duty rubber compound
- Fitment: Motorcycle/ATV specific
- Installation: Bolt-on replacement
- Pressure Rating: Standard specification






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