Car Upgrades
It depends on what you are trying to accomplish and your realistic budget. Just like when you ask a similar question about another upgrade on a thread you started. 
You need to be specific. But not general like “ I want to improve handling “ . Or “I want to improve power”. Both while seem simple neither are as simple as the want. So unless you give your intention of what you would like to achieve then and what ,where and how you will be driving your vehicles there is no standard universal answer.
BTW
Improve handling and reliability are two totally different aspects.
And aesthetics does not really even apply with upgrading mechanical aspects of a vehicle
But based on this response the best thing is to first have your suspension and chassis inspected. At 100k miles I would be surprised if something was needing replacement yet unless the Mazda was driven hard?
Also upgrading the suspension even with minor part upgrades is going to affect negatively calm driving and increase road noise and powertrain vibrations .

You need to be specific. But not general like “ I want to improve handling “ . Or “I want to improve power”. Both while seem simple neither are as simple as the want. So unless you give your intention of what you would like to achieve then and what ,where and how you will be driving your vehicles there is no standard universal answer.
BTW
Improve handling and reliability are two totally different aspects.
And aesthetics does not really even apply with upgrading mechanical aspects of a vehicle
Also upgrading the suspension even with minor part upgrades is going to affect negatively calm driving and increase road noise and powertrain vibrations .
Last edited by Callisto; Apr 24, 2026 at 12:18 AM.
It depends on what you are trying to accomplish and your realistic budget. Just like when you ask a similar question about another upgrade on a thread you started. 
You need to be specific. But not general like “ I want to improve handling “ . Or “I want to improve power”. Both while seem simple neither are as simple as the want. So unless you give your intention of what you would like to achieve then and what ,where and how you will be driving your vehicles there is no standard universal answer.
BTW
Improve handling and reliability are two totally different aspects.
And aesthetics does not really even apply with upgrading mechanical aspects of a vehicle
But based on this response the best thing is to first have your suspension and chassis inspected. At 100k miles I would be surprised if something was needing replacement yet unless the Mazda was driven hard?
Also upgrading the suspension even with minor part upgrades is going to affect negatively calm driving and increase road noise and powertrain vibrations .

You need to be specific. But not general like “ I want to improve handling “ . Or “I want to improve power”. Both while seem simple neither are as simple as the want. So unless you give your intention of what you would like to achieve then and what ,where and how you will be driving your vehicles there is no standard universal answer.
BTW
Improve handling and reliability are two totally different aspects.
And aesthetics does not really even apply with upgrading mechanical aspects of a vehicle
But based on this response the best thing is to first have your suspension and chassis inspected. At 100k miles I would be surprised if something was needing replacement yet unless the Mazda was driven hard?
Also upgrading the suspension even with minor part upgrades is going to affect negatively calm driving and increase road noise and powertrain vibrations .
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