Indianapolis Bicycle Parts

Circle City Bicycles in Indianapolis carries a wide variety of parts for all types of bikes. What we don't have we will gladly order for you (we may require a deposit). Occasionally we may have some used parts if you are on a tight budget.

Road Bike Parts

Some bicycle parts belong to what are called "Groupsets". Groupsets typically include the following:

  • Brakes
  • Brake levers
  • Gear shifters
  • Derailleurs
  • Crankset
  • Bottom bracket
  • Chain
  • Cogset

Bicycle terminology can be confusing, especially for beginner cyclists. Let's go over exactly what these parts are. Brake levers are what you touch to apply your bakes. The brake levers are attached to the brakes by cables. When you squeeze them, the brakes clamp around the rims of your wheels to slow your speed. To shift gears, you move the gear shifters. Through cables, these cause the derailleurs to move, which makes the chain move from one cog to another. The crankset includes the crank arms and the chainrings (either two or three). Pedals attach to the crank arms. The bottom bracket connects the crankset to the bike frame. and has bearings to allow the crankset to revolve smoothly. The chain goes from one of the sprockets on the crankset to one of the cogs on the cogset, which attaches to the hub of the rear wheel.

This table shows the different component levels for Shimano, SRAM & Campagnolo (Generally referred to as "Campy). They are listed in descending order on price and quality.

 Shimano SRAM Campagnolo
Dura-Ace Red 22 Super Record
Ultegra Red 2012 Record
105 Black Red Athena
Tiagra Force 22 Centaur
Sora Rival Veloce
Claris Apex

As you move up to better component levels. the components become stronger, lighter and have greater functionality (Shimano Dura-Ace has 11 speeds compared to 8 speeds for Claris). For example, a Shimano groupset weighs 5.78 pounds. If you move up to Ultegra, the groupset weight drops to 5.05 pounds. For Dura-Ace, the groupset weight is only 4.40 pounds. This reduction in weight is generally achieved by using lighter (and more expensive) materials, such as carbon fiber or titanium (titanium is about as strong as steel, but half the weight) . Note: These are all 2014 weights.

If you need parts for old bikes, please give us a call at (317) 786-9244 and we will see if we can find it.

Mountain Bike Parts

Here is a similar chart showing the mountain bike hierachy. Campagnolo doesn't make mountain bike components, so they aren't listed here.



 Upgrading Your Bike

Since bicycle manufacturers buy thousands of groupsets, they get them at a very good price. You get the best price on a groupset when you buy them on a new bike. If you are thinking of upgrading the groupset on your bicycle, you also need to look at the cost of purchasing a new bike to see if it is your best option.

Perhaps a better way to cut weight off your bike is to look at upgrading the wheels. By upgrading the wheels, you will not only reduce the weight of your bike, but also the rotating weight, which is more beneficial. Also, some wheels are more aerodynamic. This can be achieved by reducing the number of spokes, or going to flat spokes.

You can also shave off some weight with other parts of your bike. has a  database with weights for many different bicycle parts. Keep in mind that if you become too obsessed with making your bike lighter, your friends may label you a 'Weight Weenie." For a definition of this and other cycling terms, please visit Wikipedia's Glossary of cycling.


Speedplay Frog Pedal (top) and Matching Cleat (bottom)

If you are still using toe clips on your pedals, I highly recommend looking at clipless pedals. They are far more comfortable than toeclips. There are a number of different types of pedals out there. At Circle City Bicycles we recommend Speedplay Frog pedals. They allow a little flexibility than most clipless pedals, so they are good for anyone who has knee problems (Or anyone who doesn't want knee problems!). The cleats are recessed, so you easily walk in them when you get off the bike. The only down side is they are pricey. A pair costs $105, compared to $40-$60 for most other clipless pedals. With clipless pedals you will also need to get shoes that will work with them. Shoes come in two or three bolt types.


Bicycle saddles or seats are probably the biggest source of complaints among cyclists. There are now women-specific and men-specific saddles. Finding the right one for you seems to be a matter of trial and error. Something simple that you might try before changing saddles is a skin lubricant. We sell Chamois Butter, but there are several other products, all of which claim to be the best.