WILIER EBIKE X35 SILICON BAND FOR EXTERNAL BATTERY SP1

The Wilier E-Bike Mahle Ebikemotion X35 Silicone Band for External Battery SP1 (Part Number: X35RESILB) is a vital factory retention strap engineered to lock the cylindrical range extender battery firmly inside its bottle-cage holder. 

Because gravel riding and rough road terrain generate intense vibrations, this specialized synthetic strap provides the ultimate physical safety barrier to prevent your expensive add-on battery pack from ejecting from the frame.