I recently purchased a used 2010 Trek 7.3fx. I have logged in only about 70 miles but so far I love it. I have replaced the grips and have added barends and added clipless pedals but I am wondering if I should upgrade any of the components.

What's wrong with the components? Unless there is something unsatisfactory, leave them be.

No need to upgrade if you aren't having any problems. Pedals and barends are about personal preference and comfort. Are you asking about bike upgrades or accessories?

I was wondering about changing the single pivot brakes to dual pivot for better and smoother braking.

Don't those bikes have V brakes?

According to the Trek archives, the brakes are Avid SD-3's. Here's a thread about someone who was having an issue with those brakes. https://www.bikeforums.net/showthread...D-3-Brake-Woes

If you are wondering, then you probably don't really *need* to per se

However, there is nothing wrong with upgrading for fun. Part of the fun of biking for some of is that we can change up the parts now and then. You could look at lighter-weight rims, grippier brake pads, a nicer (say an LX model) crankset. You could add a bit-o-the-bling by getting some annodized stem spacers, or a colored headset. Or you could just ride the thing like it is.

I looked up your bike, btw. It's a nice one.

https://www.trekbikes.com/us/en/bikes/2010/archive/73fx

One way to see if a bike needs to be upgraded is to ride it, and ride it hard.

Put a lot of miles on it and see if there is anything that it won't do to your liking.

If you are just a casual rider or even ride for fitness, then the bike you have is more than enough.