Suspension Help!!! Shock absorbers die out on me every 4 to 6 mths

[CMF_sensei369]

Hi my Shock absorbers die out on me every 4 to 6 mths. Am using new monroe springs and new kyb excel-G shocks the gas ones model no. 332062 L 332061 R

Anyone has any idea why? Am running 15" rims
with R15 55 195 rubbers.

Any recomeded replacement or bigger shocks from other nissan car can fit?