Yokomo YOKYX40S Pitching Damper Shaft & Piston for YRX-12  [YOKYX40S]

Pitching Damper Shaft & Piston Overview

This YOKYX40S shaft and piston set is an aftermarket pitching damper component from Yokomo intended for use with YRX-12 pitching dampers. It replaces worn shaft or piston elements to restore predictable stroke behavior and maintain consistent damper response during acceleration and braking on track.

Installation is straightforward for those familiar with shock service: remove the pitching damper from the chassis, disassemble the damper following your chassis service procedure, swap in the new shaft and piston, then reassemble using your existing seals and chosen oil. Keep parts clean and confirm the piston moves freely through its travel before refitting the damper.

In tuning terms this part affects flow characteristics rather than spring rate. Changing the shaft or piston alters mid-stroke damping feel, so fit a replacement that matches your piston hole count and oil viscosity to preserve baseline handling and repeatable pitch control.