2001 Accent suspension
 

I have a 2001 Accent with 120000km on the odometer. It has a lot of
steering wheel shake when travel at speeds over 100km. The tires are
new and balanced. The shocks are not leaking but a shop suggested that
it is recommended to replace them at 80000km intervals.

1. What is the life expectancy of the shocks on a 2001 Accent?

2. Can I go with after market parts?