Schwalbe 450a/18 X 1.75 Presta Inner Tube. Schwalbe No. 5 (SV40) 18-inch Presta inner tube offers unmatched reliability for urban and folding bikes. Known for superior air retention, it minimizes inflation needs, letting you ride more and maintain less. Weighing just 95g, it enhances nimble handling. Each tube undergoes rigorous factory testing for quality and air retention, ensuring dependable performance. The 40mm Presta valve provides a secure seal. Its uniform wall thickness boosts puncture resistance and longevity. Compatible with 17" and 18" tires, including recumbents and city bikes, it’s the ultimate fit-and-forget solution for confident city cycling. SCHWALBE 18-inch Presta Inner Tube No. 5 (SV40) – Unmatched Reliability for Urban and Folding BikesExperience the benchmark in cycling reliability with the SCHWALBE No. 5 18-inch Presta Inner Tube, a premium choice within the Wheels and tyres category. Specifically designed for cyclists who demand performance and peace of mind, this inner tube is the perfect upgrade for urban commuting, folding bikes, and a wide range of specialty bicycles. Trust in the legendary Schwalbe quality to keep you rolling smoothly and confidently on every journey.The primary benefit of choosing a Schwalbe inner tube is its outstanding air retention. Engineered to hold air pressure significantly longer than conventional tubes, it dramatically reduces the frequency of inflation. This means you can spend more time riding and less time on maintenance—a crucial advantage for daily commuters and dedicated urban cyclists. Its lightweight construction, at just 95 grams, ensures that it won´t add unnecessary weight to your ride, preserving the nimble handling and efficiency of your bicycle. This combination of reliability and performance makes it the ultimate fit-and-forget solution for your wheels.Key Features:Engineered for excellence, this tube boasts a range of features that set it apart. Every single Schwalbe tube is inflated and stored for 24 hours at the factory to test for air retention, ensuring that only the most dependable products reach the customer. This rigorous quality control process guarantees unmatched reliability right out of the box. The tube features a high-quality 40mm Presta valve (Sclaverand Valve), known for its durability and secure seal, making it compatible with a variety of rim depths commonly found on urban and folding bikes. Furthermore, the uniform wall thickness of the tube ensures consistent strength and helps prevent weak spots, contributing to its superior puncture resistance and overall longevity.This versatile inner tube is designed to fit a broad spectrum of 17-inch and 18-inch tyre sizes, making it an incredibly flexible solution for many different bicycles, including recumbents, kids´ bikes, and classic city bikes. For anyone engaged in Urban Cycling, this Presta inner tube provides the confidence needed to navigate city streets without the constant worry of flats.Brand:SCHWALBESpecifications:- Model: SCHWALBE Tube No. 5- Valve Type: Presta (Sclaverand Valve - SV) with a 40mm length- Weight: 95g- 40-355 (18x1.50)- 47-355 (18x1.75)- 32-369 (17x1 1/4)- 37-390 (18x1 3/8)- 37-400 (18x1 3/8)- Compact Code: 32/47-355/400 SV40VN. tradeinn Bikeinn