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The FOX IFP/QSR 2.0 hydraulic preload assembly is an authentic, high‑performance suspension component built to the exacting standards of the FOX brand. Engineered for maximum handling stability, the unit integrates a 13.5‑inch standard spring with an M8 mounting interface, delivering the precise geometry and rigidity required for demanding soft‑ail applications.
Designed for the soft‑ail chassis, the hydraulic preload mechanism provides consistent, repeatable preload settings that help maintain suspension balance under varied riding conditions. The combination of the proven IFP/QSR 2.0 design and FOX’s chassis‑focused engineering ensures a reliable, rider‑oriented solution that enhances overall handling without compromising durability.
Ride FOX — World championship high-performance suspension and shocks.
Key engineered features, technical highlights, and manufacturer specifications