Super responsive. Purpose-tuned. Built specifically for the Zero XE. The Sirris F43 XE Trail Tune fork brings true closed-cartridge suspension performance to the front of the bike, with two independent sealed dampers engineered for consistent support, reduced friction, and confident trail control.

Developed as a direct-fit upgrade by Sirris and tuned by Zero Motorcycles for the XE platform, this fork is built around wide-range trail valving, adjustable low-speed compression, adjustable rebound, and spring-preload tuning to match rider weight, terrain, and riding style. Balanced with the XE chassis—not adapted from a generic race setup—it delivers the comfort, traction, and front-end confidence needed to elevate the bike’s trail capability.