they will only fall out the cups if you put ZR Avo's springs on 25 struts
ZR Avos NEED! ZR struts
as far as colours i think Red is progressive so when you arent pushing it its a more comfortable ride then when you are givin it the beans its stiffer. but for blacks idk
HTH
ZR Avos NEED! ZR struts
as far as colours i think Red is progressive so when you arent pushing it its a more comfortable ride then when you are givin it the beans its stiffer. but for blacks idk
HTH