Sapphire piston assembly only. OEM# 228-35281-95 (Sapphire) and 228-35281-91 (Zirconia) include holder, o-ring, spring and moly grease. OEM# 228-35601-93 (Sapphire) and 228-35601-91 (Zirconia) include spring and moly grease. This is an option for LC-10ADvp, OEM original piston for LC-10ADvp is Zirconia.
ASI does not supply the spring, retainer ring or holder ring, so you will need to reuse the original parts when you replace the piston. Please refer to the Installation Instruction below.