I bought my second bike 2 years ago - Mirage SLX. It was my first road bike and I was skeptical moving to a road bike. As of 09/2020, i have 500+miles on the Mirage SLX.
Tires
The first modification was changing the tires - Continental Gatorskin - No puncture since then. I chose 700x25c tires to begin with since my wheel allowed 18-25c of tires. The first number denotes wheel size and the second one denotes width of tires. Smaller the width, less friction and hence faster speed. I though of moving to 23c, however a friend shared stats that most professional racing bikers use 25c for reasons in the article .
Groupset
Groupset is combination of gear parts ( derailleur) , chain , chainset, cassette, brakes, gear levers included. There are three big companies making these groupsets - Shimano, SRAM and Campagnolo. The article explains hierarchy for each company
Compatibility of these combination parts is important when you think about replacing one or the other.
A learning here was a X speed groupset is compatible with many of the parts across companies and across hierarchies. Which is why i chose the max speec groupset available as of now - 11 speed , R105 Shimano R7000.
Why R105?
Changing groupsets are very costly and I wanted to take these changes slowly and the reason to upgrade it was to have comfortable gear shift, build speed and cadence. So after researching i found that i couldn't add a Shimano Dura Ace ( pro cyclist) deraileur to my Shimano Claris ( or Sora on my 1st bike) and going to R105 or Ultegra is a must. Ultegra is costlier compared to R105.
Components
Chainset
Shimano 105 R7000 Chainset - 11 Speed / 34/50 / 172.5mm / 11Bottom bracket
Shimano Ultegra BBR60 Bottom BracketCassette
Shimano 105 CS-R7000 Cassette - 11 Speed - Silver / 11-32 / 11 SpeedChain
Shimano CN-HG601 11 Speed Chain - Shimano CN-HG601 11 Speed ChainFront Derailleur
Shimano 105 FD-R7000 Front Derailleur - 11 Speed / 31.8mm / Band On / 11 SpeedRear Derailleur
Shimano 105 RD-R7000 Rear Derailleur - 11 Speed / Short Cage SS / 11 SpeedOthers
- STi Levers - Shimano 105 R7000 Road Bike Gear Levers - 11 Speed / 11 Speed
- Front brake - Shimano 105 BR-R7000 Brake Calipers - Black / Front
- Rear brake - Shimano 105 BR-R7000 Brake Calipers - Black / RearI