The Kyosho IFW405-138 pistons are built to adjust the dynamic feel of your RC suspension. Intended for larger shock bodies, their hole geometry helps modulate oil flow for steadier control at speed and firmer support on hard impacts.
The diagonal 1.3x8 hole design provides a balance between smooth low-speed movement and stiffer high-compression damping. That means predictable handling in corners and extra support through landings to reduce chassis strike.
These pistons suit hobbyists tuning cars and trucks with big dampers who want a clear change in midstroke and endstroke behaviour. Test different oil viscosities and spring rates to match your driving surface and load.
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