Unmatched Durability and Air Retention for Your Ride.
Struggling with frequent tire pressure loss? The Schwalbe bnb AV1 12 x 1.75 – 12 1/2 x 2 1/4 AV 40mm inner tube delivers exceptional reliability and long-lasting air retention. Engineered with a high butyl content and ultra-pure materials, it outperforms standard tubes by maintaining pressure significantly longer. Tested rigorously for 24 hours at the factory, this tube ensures your ride stays smooth and hassle-free, eliminating constant re-inflation and downtime.
Key Features
- High reliability trusted by professional bike retailers.
- 24-hour airtightness test guarantees superior air retention.
- Extremely elastic design fits multiple tire sizes for versatile use.
- Group inner tube system adapts to various dimensions effortlessly.
- 100% fully recyclable for eco-conscious riders.
- Standard model with proven performance over many years.
Technical Specifications
- Model: Schwalbe bnb AV1 12 Inch Auto – AV1/47-203, 50-203, 54-203, 62-203.
- Size compatibility: 12 x 1.75 to 12 1/2 x 2 1/4 inches.
- Valve type: AV (Schrader) 40mm.
- Material: High butyl content with exceptional purity.
- Tested: Factory inflated and 24-hour airtightness verified.
- Design: Group inner tube system for multiple tire size compatibility.
- Elasticity: Extremely flexible to fit various tire widths and diameters.
- Environmental: 100% fully recyclable construction.
- Reliability: Long-standing standard model with proven durability.

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