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Bicycle Chainsets & Bottom Brackets

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Do you want to know more about chainsets and bottom brackets?

Chainsets and bottom brackets are responsible for transferring the strength of the cyclist to the chain, which in turn transfers it to the rear wheel of the bike. They consist of one or more chainrings attached to the cranks at the end of which are located the pedals. There is one crank for the right leg and one for the left and they are mounted at 180 degrees from each other, joined by the bottom bracket.

Chainrings are a set of cogs that are responsible for making the bike chain move, transmitting the movement to the rear wheel through the cassettes. There are different sizes of chainrings to increase the drivetrain force and therefore adapt the gear to the different conditions of the terrain being cycled.

The bottom bracket can be described as the heart of the bike, since it is one of the most important parts of the bike, although it is not spoken so much about since it normally cannot be seen. Almost all bottom brackets are airtight and with the joints sealed, they are assembled under pressure and cannot be disassembled, but they can be greased to improve their performance.

These brackets do not allow for much maintenance or repair, which is why if they break,you usually have to replace the entire chainset.


Opinions featured in Bicycle Chainsets & Bottom Brackets

Shimano XT 1x11 Drivetrain 11/47 32T Chainring Groupset
Good quality groupset
Easy to set up, well packaged & quality shifting
, the
Shimano Altus M311 175mm 7/8 Speed Chain set 48/38/28 Black
Unbelievable value for money
A fairly low-end chain set from Shimano, but still high quality and unbelievable cheap
, the
Shimano Tourney TY501 170mm 6/7/8 Speed Chain set 42x34x24 Black
Crankset shimano
Fantastic shimano crankset at bargain price delivery straight to uk
, the
Shimano UN-100 BSA 73X122.5 Square Cartridge Bottom Bracket
Bottom bracket
Excellent replacement bottom bracket and great price
, the
SRAM BB30 PressFit Bottom Bracket Cups
Bb cups bearing
Perfect replacement
, the
Shimano UN-100 BSA 73X122.5 Square Cartridge Bottom Bracket
great BB replacement
excellent quality replacement bottom bracket
, the
Shimano Tourney TY501 170mm 6/7/8 Speed Chain set 42x34x24 Black
great value replacement crankset
excellent quality and price shimano crankset.
, the
Shimano UN-100 BSA 68X122.5 Square Cartridge Bottom Bracket
What it says on the tin
Easy to fit, smooth, job done
, the
Shimano UN-55 BSA 68x122 Cartridge Bottom Bracket
Seemed good, first I have had
Fitted well and has worked well so far
, the
FSA PLATINUM ISIS 68 x 108mm Cartridge Bottom Bracket
Seams ok but time will tell.
Not used it yet but it came with instructions on fitting which was good.
, the
Shimano Ultegra R8000 50/34 11-Speed Chainset
Good quality!
Quality item
, the
FSA MEGA-EXO BB-8681 Di2 Bottom Bracket Cups
Exact replacement for what I had
Fit perfectly and is of expected good quality
, the
Shimano Tiagra FC4700 cranks 170 mm 50/34 10V
Good quality
Good bottom bracket for this money
, the
Shimano Tiagra ITA RS500 Bottom Bracket Cups
Good quality
Good quality fits perfect
, the
Shimano Tiagra RS500 bottom bracket cups by pressure C: 86.5
perfect piece
it's met my requestes
, the

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