Yokomo YOKBMS162 - BMAX4 III X Shock Piston (Black 1.6, 2 holes) 2pcs  [YOKBMS162]

Shock piston for BMAX4 III X

This is an OEM-design replacement shock piston intended for use in the BMAX4 III X shock assemblies for 1/10 scale RC cars. The kit includes 2 pcs of black pistons marked as 1.6 with a two‑hole layout as stated in the product name. The component is an RC-scale damper part intended solely for model suspension tuning and maintenance.

Functionally, this piston provides the internal orifice geometry that governs oil flow inside the shock cartridge, so swapping piston sizes or hole counts is a direct method to alter compression and rebound characteristics. Install these pistons into the BMAX4 III X shock bodies following your normal shock disassembly process, verify piston seating and seal condition, and refill with the correct shock oil grade for the tuning target.

Routine checks after installation should include confirmation of smooth shaft movement, absence of leaks, and that piston orientation matches the desired flow pattern for your tuning goals. Keep the removed pistons as service spares; the 2 pcs pack provides basic replacement capacity.