OK so other than working on my BMX collection I too did a lot of work on my single speed last year. I then didn't ride it. I was still very para about Covid, and it had an issue.
First let me go through all of the upgrades. The brake system was totally replaced. On the front it has a Campagnolo TT brake and on the rear a Campagnolo potenza? something like that.
One of those. This is the front.
I originally had a disc brake on there with an adapter, but it was dangerous and heavy. The wheels I had on there (alloy mags) were also very VERY heavy. Problem was when I built the bike so was I. I was 19 stones. I did not trust little skinny wheels so I went strong. I then got to nearly 21 stones before I finally called being fat a day. I now weigh 15.2, and have dropped weight steadily since totally changing my lifestyle.
Any way, the first upgrade last year was a very light weight carbon wheel. I got this for £60, redone the clear in matt and rebuilt it (had no axle no bearings etc) and put a single speed converter on it.
I made the new decals too as they were missing.
I then bought light weight CNC levers.
In white, and a Campagnolo front wheel (extremely light. Not carbon.... Yet)
I then got new grips (mine were rotten)
And all Jagwire cables. I then got some forks. These are Bontrager carbon. They were £40 in silver. I repainted them in satin black.
Leaving the front exposed carbon on show.
Chain tensioners were next.
And then some bling.
I then started building.
But ran into a snag. Well, two. The first one was that the pedals I put on there are too big. As such if you are not careful you can easily steer the front wheel into your foot. Which is scary. The second was the brake at the back did not reach far enough. So I got these to fix that.
I then got some Nukeproof "urchin" kids pedals as they were the same size as the horrid fixie pedals that came on the bike.
Oh and a new BMX stem for my carbon BMX race bars.
And a very light weight seat clamp.
And titanium studs and bolts.
Better.
OK so fast forward to now. At the end of that I removed the heavy AF white BMX chain. The company who made the bike are, and have always been, a BMX company. Since the 70s. So when they designed a fixed 700c bike they were a bit clueless. Steel cranks, BMX parts etc. I put carbon cranks on the day I got it. Again bought cheap and restored. Well the white chain looked crap now, and it was heavy AF. I bought a Shimano light weight chain (just a cheap one, funds were low by this point) but you have to bend it laterally to get it to join and my extractor was broken. I could not get it to join and hurt my hands real bad so I put a link in it. Problem is it is narrow, and the link had a lot of slop. Long story short the last time I had a chain snap I needed 3 surgeries, so it is my one big phobia about riding.
So, I left it. Not even a test ride

Obviously now the weather is improving so it was time to tackle that. I found the chain I wanted in orange and black but £120. OUCH. I then found it on clearance in red and black for £45.
I loved the evil look.
And, as it would happen I also put a pad set on the bike at the end again because I am para about chain snap. The bike has floval tubing so at best case it's smashed plums. Worst case you yeet face first over the bars like I did the last time I had a chain snap.
I reckon it will go real well. Well, way better than a BMX white heavy ass chain any way.
The seat clamp has been replaced since that pic btw.