Big Shock Piston Pair Kyosho IF347-126B for Large Shock Assemblies, 2pcs  [KY-IF347-126B]

Large shock piston summary

This Kyosho IF347-126B is an RC-scale shock piston sold as a pair, designed for use in larger shock bodies where a multi-hole piston helps control oil flow. It serves as a direct replacement or tuning part to restore or refine damping behaviour in model car suspension systems.

Each pack contains two pistons with multi-hole flow profiles that alter damping response and stroke feel. Consider these parts as tunable components: changing piston types or hole counts modifies how oil passes the piston, which in turn affects bump and rebound characteristics of the suspension.

Installation follows standard shock service procedures: strip the shock, remove the rod and spring, fit the piston onto the shock shaft keeping orientation correct, then reassemble with suitable oil and seals. Check piston fit and shaft alignment inside your shock body before final assembly to prevent binding or seal wear.

When tuning, match piston selection to oil viscosity and spring rates: heavier oil or smaller piston holes slow damping, lighter oil or larger holes speed it up. Make small incremental changes and test on your usual course to find the handling balance you want.