Forsa HP Racing Shock with Reservoir - 325mm After-Market Adjustable Performance Shock with Reservoir for Full-Size Scooters, commonly found on the Vento Zip. This shock is adjustable and nitrogen charged. Please see our Warranty & Returns Policy. Overall Length: 345mm (13.75") Mounting Distance (eye to eye): 325mm (12.75") Mounting Hole Diameter: 10mm Thread Size: M8x1.25 Adjustable Nitrogen Charged Made in Taiwan