
VERTEX Forged Replica Piston (manufacturer part number 23861A) designed for off-road engines. This machined replacement part is made to fit oversized bores, and this aluminum alloy piston is aimed at motocross riders looking for a robust and precise part for their RM-Z 250 and other compatible machines.
Designed for installation with an A size, this piston requires adherence to bore tolerances and manufacturer recommendations during installation (pins, rings, clips, and radial play). The forging ensures controlled geometry of the skirt and head for a reliable fit in the cylinder. Ideal for engine restoration or circuit preparation, it is suitable for the listed compatible models.
Compatible Motorcycles (examples): SUZUKI RM-Z 250 (2013, 2014, 2015).
Before installation, check the condition of the cylinder, perform bore checks, and follow break-in recommendations to ensure optimal lifespan of the assembly.