ALPINESTARS SP-1 v2 Vented Shoes - Black - US 12 / EU 47 2511318110047 classic 17-9759 Transmission Duo-Seal Nut Reference

17-9759 Transmission Duo-Seal Nut Reference #'s (if available): Can't find what you need

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6 L Excursion (one way) 25mm Free Air Resonance 29Hz Mechanical Factor 4

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ALPINESTARS SP-1 v2 Vented Shoes - Black - US 12 / EU 47 2511318110047 classic 17-9759 Transmission Duo-Seal Nut ReferenceMicrofiber upper Perforated microfiber panels on lateral and medial quarter areas plus medial side perforation zone for enhanced airflow Tongue is made with breathable mesh to improve airflow Rear accordion panel is lightweight padded material Speed lacing system derived from Alpinestars MotoGP technology for a quick, precise, secure closure Ankle opening closure system using a hook and loop strap with debossed Alpinestars logo Foam backed double