This is such a common question that people with older mountain bikes often ask themselves how they can get a 10 or 15-year-old bike by replacing parts with a newer version.
This is a legitimate request because people believe that installing a newer version of the part will make their machine perform better. But what needs to be noted here are some facts about the latest trends that have changed mountain bike parts from before.
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Given the weight of the current bikes, the older bikes would be in the super heavy class. The newer version is overweight and made of a material that is much stronger than before, but at the same time lighter. This provides an advantage for the rider because he does not have to use a lot of force to compensate for the weight of the bike.
If the engine only has a lighter weight, then spare parts such as cranks, etc. Here's how to lose weight. These parts are designed for lighter bikes. If you want to use it on a 10 or 15-year-old bicycle, think again.
This part works well with a model newer than your old model. This makes you think about the quality of these parts, but the design criteria are such that they would work perfectly with lighter models.
If you consider upgrading your bike by replacing the old part with a newer version, you will lose the integrity of your mountain bike and find that the overall performance has dropped significantly while at the same time you are somewhat unreliable for the sport that requires it.