What CinQo fits my bike?
There are currently three main 'bottom bracket' (crankset bearing) systems in use today. The bottom bracket shell, where the bottom bracket attaches, on your frame will follow of these standards.
Threaded
The threaded bottom bracket has been around for many years and is the most common type of BB. The width of the shell is 68mm (73mm on mountain bikes) and is threaded either English (1.37" x 24 TPI) or Italian (M36 x 24 TPI). Most bikes are English threaded unless it is an Italian bike (Colnago, Pinarello, etc.) in which case it is likely Italian threaded (go figure!).
A number of bottom bracket bearing assemblies fit the threaded shell type including square taper, ISIS, Octalink and external cup. External cup is currently the most popular (see the photo below). External cup designs include Shimano, FSA and others which have a 24mm crank spindle. SRAM's Giga-X-Pipe 'GXP' bottom bracket spindle uses 24mm on the drive side and 22mm on the non-drive. The Lightning Carbon crank has a 30mm spindle but uses regular English or Italian threaded external cups.
Regardless of what bottom bracket bearings you have now, it is easy and inexpensive to change bearings to a different threaded bottom bracket type.
Threaded BB Compatible CinQos: SRAM S900, SRAM S975, FSA Team Issue, Rotor 3D / Agilis, Lightning Carbon
BB30
The BB30 bottom bracket was developed by Cannondale nearly 10 years ago and is now gaining much wider popularity. This bottom bracket has 68mm wide shell and a 30mm diameter spindle (hence the name BB'30'). The shell itself is not threaded, instead the bearings press directly into the frame.
The most common BB30 bikes are Cannondale and Specialized (who call it 'Oversized BB' or OSBB) and others including many other custom builders. Cannondale's Hollowgram SI and SL cranksets are BB as are the Specialized FACT Carbon cranks. A BB30 crankset will not fit on a bike with threaded shell.
BB30 Compatible CinQos: Specilaized, Cannondale, SRAM S975 BB30
Integrated Bottom Bracket (BB86/BB90)
The so called "integrated bottom bracket" is basically an integrated bearing system similar to BB30, but is designed to fit external cup 2-piece cranksets. Basically the bottom bracket bearings from an external cup system are pressed directly into the frame - eliminating the cups and the threads.
Variations on this system were developed independently at Scott, Trek and others and as such there is not a common name beyond the generic "integrated bottom bracket". The overall shell width typically is around 86 to 90mm wide, so the BB86/BB90 terms have been popularized à la BB30.
Bikes with Integrated bottom bracket/BB86/BB90 include high end carbon models from Trek, Scott, Giant and others.
BB86/BB90 Compatible CinQos: SRAM S975, Rotor 3D / Agilis
