Road Bike Groupsets: Everything you need to know!

Everyone these days is looking to buy a geared bicycle. 18 speed, 24 speed, which one should I buy? Shimano Acera or Shimano altus? Ohh, there’s SRAM also. What’s the difference and how much should I spend?
While you’re surrounded by this cloud of confusion, worry not. We are hear to answer all your queries.
So let’s start with the basic.
What is a groupset?
A groups is basically a collective name for all individual mechanic parts (gearing and braking)that are attached to the bike frame. Parts included are gears, brake levers. Disc or brake calipers, front and rear derailleur, cables, chainset, bottom bracket, cassette and chain.
A Groupset are categorised by manufactures.They name into different levels of pre and performance with each part clearly marked with the groups name for easier identification. This not only makes buying and replacing a worn out part easier but also helps in identifying the level of performance a bike is aimed at.
What companies make road bike groupsets/ bicycle gears?
Basically, there are three main companies that manufacture road bike groupsets.
1. Shimano — a Japanese multinational manufacturer of cycling components
2. SRAM (Scott, Ray and Sam) — is a privately owned bicycle component manufacturer based in Chicago, Illinois, United States, founded in 1987.
3. Campagnolo- is an Italian manufacturer of bicycle components with headquarters in Vicenza, Italy.
Can I mix and match the components?
These companies manufacture parts that look very similar. However, they are incompatible with each other’s systems. Indeed it’s often the case that different groupset from the same manufacturer don’t work very well with each other. Usually, this happens because each gear system has a pre-determined amount of cable pull and corresponding mech movement that differs slightly with each manufacturer.
The same applies when it comes to brake levers and calipers.
So if you’re tempted to mix and match gears, it’s surely not a good idea.
Besides, each group manufacturer recommends only using similar named Groupset component as some components may not work with a differing number of gears.
For instance, Shimano Dura Ace 11 speed must use an 11 speed rear or front mech as it is different in size to some of its lower tier groupsets.

So what does Shimano make?
Shimano are the world’s biggest bicycle groupset manufacturer. Their components are widely used and are very common in India.
Have a look at the hierarchy of Shimano Road groupset from Professional to entry level
1.Dura Ace Di2 (electronic shifting)
2.Dura Ace
3.Ultegra Di2 (electronic shifting)
4.Ultegra
5.105
6.Tiagra
7.Sora
8.Claris
So what does Campagnolo Make?

One of the oldest bicycle manufactures of cycle gears in the market is Campagnolo. They are the brand that invented the rear derailleur. They not only make grouspets for some of the best cycling teams in the world but also make stuff for regular riders as well.
Have a look at the hierarchy of Campagnolo groupsets from professional to entry level below:
1.Super Record EPS (electronic shifting)
2. Super Record
3. Record EPS (electronic shifting)
4. Record
5. Chorus EPS (electronic shifting)
6. Chorus
7. Athena
8. Centaur
9.Veloce
So what does SRAM make?
