Sonata suspension parts
 

Here is a list of some Sonata suspension parts that I have been able to locate. Feel free to add to the list if you find anything else.

Nobody condones any particular part or vendor, this is simply a list of what is known to be available.

Y2 (1988-1992)
KFX front strut bar
KFX rear strut bar
SMA struts and coilovers

Y3 (1993-1997)
KFX front strut bar
KFX rear strut bar
SMA struts and coilovers

EF (1998-2001)
B&G springs
Evofusion front strut bar
Shark Racing front and rear strut bars
KFX front strut bar
KFX rear strut bar
SMA springs, struts, and coilovers

New EF (2002-2005)
B&G springs
Evofusion front strut bar
Shark Racing front strut bar
KFX front strut bar
KFX rear strut bar
KSPEC front strut bar
SMA springs, struts, and coilovers
T&P coilovers
Ultra Racing front strut bar
Ultra Racing 16mm rear sway bar
Ultra Racing 19mm rear sway bar
Ultra Racing front lower brace
Ultra Racing mid chassis brace
Front and rear polyurethane sway bar bushings
Polyurethane bushing set

NF (2006-2010)
Evofusion front strut bar
KSPEC front strut bar
Shark racing front strut bar
Shark Racing deluxe front strut bar
KFX front strut bar
KFX rear strut bar
H&R lowering springs
SMA springs, struts, and coilovers
T&P 2700 coilovers
T&P 2700A coilovers
Neotech LE coilovers
Neotech VE coilovers
Neotech front upper arm camber adjustment kit
Polyurethane bushing kit
SFR big brake kit
Shark Racing heat treated OEM sway bars

YF (2011-)