The Kyosho W5312-04 shock piston is a compact upgrade for Ultima RB7.5 drivers focused on tighter suspension control. Engineered to maintain consistent damping, it supports steadier lap times and predictable chassis balance.
Featuring a DC13 diameter and 2.45-280 thickness, this piston helps regulate oil movement inside the shock body for smoother responses. Small adjustments to piston or oil result in noticeable handling differences.
Specifically produced for the Kyosho Ultima RB7.5, the W5312-04 installs into the original shock hardware without modification, so you can test setups quickly between sessions.
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