Bridgestone TR4 Heavy Duty Tire Tube 2.75/3.50-21 — Fits Off-Road Motorcycles

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bridgestone

Bridgestone engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Bridgestone lineup with fast shipping and expert fitment support — order with confidence.

Reliable Performance with Bridgestone TR4 Tubes

Ensure your off-road adventures remain uninterrupted with the Bridgestone TR4 Tire Tube. Specifically designed for 21-inch wheels, this tube is built to withstand the demanding conditions of motocross, enduro, and trail riding. Bridgestone is a leader in tire technology, and their tubes offer the same commitment to quality and durability as their world-class tires.

Why Choose Bridgestone TR4 Tubes?

  • Size: Fits 2.75 to 3.50 width tires on 21-inch rims
  • Construction: High-quality rubber compound for puncture resistance
  • Valve Type: TR4 standard valve stem
  • Application: Ideal for dirt bikes and dual-sport motorcycles
  • Durability: Engineered to handle high-impact off-road terrain

A high-quality inner tube is the unsung hero of your tire setup. The Bridgestone TR4 provides excellent air retention and flexibility, allowing it to conform to the tire casing under varying pressures. This is essential for maintaining consistent traction and handling when navigating rocky trails or loose dirt tracks. Whether you are a professional racer or a weekend enthusiast, having a reliable spare tube in your kit is vital for quick trailside repairs. The robust rubber construction resists pinch flats and common trail hazards, giving you the confidence to push harder on every ride. Trust in the engineering excellence of Bridgestone to keep your motorcycle performing at its best. Explore the full range of tire accessories and maintenance gear available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bridgestone

Bridgestone engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Bridgestone lineup with fast shipping and expert fitment support — order with confidence.

Reliable Performance with Bridgestone TR4 Tubes

Ensure your off-road adventures remain uninterrupted with the Bridgestone TR4 Tire Tube. Specifically designed for 21-inch wheels, this tube is built to withstand the demanding conditions of motocross, enduro, and trail riding. Bridgestone is a leader in tire technology, and their tubes offer the same commitment to quality and durability as their world-class tires.

Why Choose Bridgestone TR4 Tubes?

  • Size: Fits 2.75 to 3.50 width tires on 21-inch rims
  • Construction: High-quality rubber compound for puncture resistance
  • Valve Type: TR4 standard valve stem
  • Application: Ideal for dirt bikes and dual-sport motorcycles
  • Durability: Engineered to handle high-impact off-road terrain

A high-quality inner tube is the unsung hero of your tire setup. The Bridgestone TR4 provides excellent air retention and flexibility, allowing it to conform to the tire casing under varying pressures. This is essential for maintaining consistent traction and handling when navigating rocky trails or loose dirt tracks. Whether you are a professional racer or a weekend enthusiast, having a reliable spare tube in your kit is vital for quick trailside repairs. The robust rubber construction resists pinch flats and common trail hazards, giving you the confidence to push harder on every ride. Trust in the engineering excellence of Bridgestone to keep your motorcycle performing at its best. Explore the full range of tire accessories and maintenance gear available at GGCRACING.

Product Details

Product Description

About Bridgestone

Bridgestone engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Bridgestone lineup with fast shipping and expert fitment support — order with confidence.

Reliable Performance with Bridgestone TR4 Tubes

Ensure your off-road adventures remain uninterrupted with the Bridgestone TR4 Tire Tube. Specifically designed for 21-inch wheels, this tube is built to withstand the demanding conditions of motocross, enduro, and trail riding. Bridgestone is a leader in tire technology, and their tubes offer the same commitment to quality and durability as their world-class tires.

Why Choose Bridgestone TR4 Tubes?

  • Size: Fits 2.75 to 3.50 width tires on 21-inch rims
  • Construction: High-quality rubber compound for puncture resistance
  • Valve Type: TR4 standard valve stem
  • Application: Ideal for dirt bikes and dual-sport motorcycles
  • Durability: Engineered to handle high-impact off-road terrain

A high-quality inner tube is the unsung hero of your tire setup. The Bridgestone TR4 provides excellent air retention and flexibility, allowing it to conform to the tire casing under varying pressures. This is essential for maintaining consistent traction and handling when navigating rocky trails or loose dirt tracks. Whether you are a professional racer or a weekend enthusiast, having a reliable spare tube in your kit is vital for quick trailside repairs. The robust rubber construction resists pinch flats and common trail hazards, giving you the confidence to push harder on every ride. Trust in the engineering excellence of Bridgestone to keep your motorcycle performing at its best. Explore the full range of tire accessories and maintenance gear available at GGCRACING.

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