Shock Absorber Series for Automotive Suspension: Twin (Mono) Tube (Gas-filled) Shock Absorber Series 110000/120000/130000/140000/180000 series (Gas-filled)Shock Absorber with Spring Seat Series 160000series Macpherson (Gas-inflated) Strut Serie 150000series Macpherson (Gas-inflated) Strut Cartridge Series 170000series