The Topeak Presta Valve Extender XL is engineered for riders using deep-section and carbon rims who need reliable valve access without compromising air retention. Precision-machined from aircraft-grade aluminum alloy, this extra-long valve extender is specifically designed for rims with depths ranging from 60 to 90 mm, making it ideal for aerodynamic road wheels, time trial setups, and race-focused builds.An integrated O-ring seal ensures an airtight, leak-free connection between the extender and valve stem, maintaining consistent tire pressure during training and competition. Despite its extended length, the valve extender remains extremely lightweight at just 6.4 grams, adding negligible rotational mass while delivering dependable performance.Compact, durable, and easy to install, the Topeak Presta Valve Extender XL is a must-have accessory for cyclists running deep-dish wheels who demand precision, reliability, and clean airflow compatibility on high-performance rims.Designed for Deep Rims: Extra-long valve extender optimized for 60-90 mm deep section and carbon road rimsAircraft-Grade Aluminum: Precision-machined aluminum alloy provides strength, corrosion resistance, and low weightLeak-Free O-Ring Seal: Integrated O-ring ensures a secure, airtight fit with consistent pressure retentionUltralight Performance: Weighs only 6.4 g (0.23 oz), minimizing added rotational mass on race wheelsCompact & Durable: Slim 3-inch profile fits cleanly inside aerodynamic rim cutouts for a professional setupTodson Sku: TFV02