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Challenge Presta Valve Extenders thread into your existing valve stems to reach through deep profile rims for easy inflation
The Strada is Challenge’s go-to champion for efficiency and sublime road feel
BEST GRAVEL TIRES REVIEW: Recommended by Road
This Challenge TLR model is hookless rim compatible
PISTA Ultra - Handmade Tubular V-CL Challenge Presta Valve Extenders threadWhether the velodrome surface is wood or concrete, nothing holds the sprinters line like the Pista. This handmade SETA EXTRA (Ultra) tubular uses an ultra compliant sealed Silk 1000TPI casing for unmatched performance with our SmartSoft Compound tread and a Latex Inner Tube with 48mm valve stem. Remember you may need to use Challenge Presta Valve Extenders when mounting tubulars on deep profile rims.
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