You say bike. Not sure what gains you’re looking to achieve; and why ?
But: What about ‘upgrading yourself’ by indulging in the use of diet, training and mental coach or coaches ? I’m betting whilst not technically the best ‘bang for your buck’ - you’d see the most gains (Times, speed, strength, recovery rates, enjoyment….) : quickly…..
And whilst slightly tongue in cheek. It’s likely true. A few tweeks to the hardware - would pale into insignificance compared to a long-term ‘investment’ into the software up-top 😉
Think a National level cyclist couldn’t smash you on a
Halfords bike ? Think Tiger Woods in his prime couldn’t shoot decent scores with clubs from Walmart ? Think Lewis Hamilton wouldn’t run rings round you in two identical cars - even bar yours having upgraded brakes and some engine mods ? The difference in all being the operator skills. Yea- the bit that’s the hardest to change…..
Oh and I’m the worst of the worst. I love a bit of Tech that promises to overcome laziness and give me untold bolt-on gains. Or just looks frikken fabulous 😁
Can’t stop and discuss further though as I’m off to fit my new Tungsten, PTFE-Matrix BB bearings. So I can shave another 0.2 seconds of my 50 mile ride time 🤣