Unmatched Durability and Air Retention for Your Ride.
Say goodbye to frequent flats and constant air loss with the Schwalbe bnb AV21 27.5 x 1.50 – 2.40 AV 40mm inner tube. Designed for riders who demand reliability and long-lasting performance, this inner tube is engineered to keep your bike rolling smoothly. Thanks to Schwalbe’s rigorous factory testing and premium butyl composition, it delivers exceptional air retention and extreme elasticity that fits multiple tire sizes. Elevate your ride with a tube that’s trusted by professionals and built to endure.
Key Features
- High reliability proven over many years of use.
- 24-hour airtightness test ensures superior air retention.
- Extremely elastic design fits multiple tire widths and diameters.
- Premium butyl rubber with high purity for enhanced durability.
- Group inner tube system covers a range of tire sizes from 27.5” to 29”.
- 100% fully recyclable for eco-conscious riders.
Technical Specifications
- Model: Schwalbe Standard Inner Tube AV21/40-584
- Compatible Tire Sizes: 27.5 x 1.50 – 2.40 inches
- Additional Compatible Sizes: 47-584, 50-584, 54-584, 57-584, 60-584, 62-584
- Valve Type: Auto (Schrader) Valve, 40mm length
- Material: High butyl content with exceptional purity
- Tested: Factory inflated and air-tightness tested for 24 hours
- Design: Group inner tube system for multi-size compatibility
- Elasticity: Extremely flexible to fit various tire widths and diameters
- Environmental: 100% fully recyclable construction
- Performance: Holds air significantly longer than standard inner tubes

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