Schwalbe BNB AV7A 20 x 1 3/8 AV 40mm
Hold air 24% longer with ultra-pure butyl Schwalbe AV7A tubes—flexible fit for multiple sizes and 100% recyclable for your urban ride
€8
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Unmatched Durability and Pressure Retention for Your Ride.
Struggling with frequent inner tube failures and air loss? The Schwalbe bnb AV7A 20 x 1 3/8 AV 40mm inner tube delivers exceptional reliability and long-lasting air retention to keep you moving without interruptions. Engineered with a high butyl content and ultra-pure materials, this tube undergoes rigorous factory inflation and a 24-hour airtightness test to ensure superior performance. Its extreme elasticity fits multiple tire sizes, making it a versatile and trusted choice for urban riders and e-mobility enthusiasts alike.
Key Features
- High reliability proven over many years of use.
- 24-hour airtightness test guarantees superior air retention.
- Extremely elastic design fits multiple tire dimensions.
- Group inner tube system for versatile compatibility.
- 100% fully recyclable for eco-conscious riders.
- Premium butyl rubber ensures longer-lasting pressure.
Technical Specifications
- Model: Schwalbe bnb AV7A 20 x 1 3/8 AV 40mm.
- Compatible sizes: AV7A/37-438, 28-440, 37-440, 28-541, 37-451.
- Tube type: Narrow 20 Inch Auto inner tube.
- Material: High butyl content with exceptional purity.
- Tested: Factory inflated and 24-hour airtightness tested.
- Design: Group inner tube system with extreme elasticity.
- Compatibility: Fits multiple tire sizes within specified ranges.
- Environmental: 100% fully recyclable construction.
- Standard version: High reliability, time-tested performance.
Frequently Asked Questions
Q & R
Schwalbe BNB AV7A 20 x 1 3/8 AV 40mm
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