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Bicycle Chainsets & Bottom Brackets

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640 Item(s)

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

CeramicSpeed BSA Bottom Bracket for Shimano Road Black
High quality
I would recommend it
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Rotor Press Fit 4124 Ceramic Bottom Bracket Bearings Black
Top of the range!!!
Perfect as always
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Shimano BB92 Press Fit Bottom Bracket Cups
Good value for money.
It is a quality product that I would buy again.
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SRAM DUB English Thread BSA 73/68 mm Bottom Bracket Cups
Good product.
It was what I needed.
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SRAM NX Eagle 1x12V DUB Plate 32D Complete Set
Perfect, it is just what I wanted.
Very good value for money. Easy to assemble and adjust.
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SRAM Eagle Crank Boot Black (Pair)
Perfect
Perfect on sram connecting rods
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Shimano XT BB71 83mm Press Fit Bottom Bracket
Shimano quality
Shimano XT quality and reliability, perfect
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Rotor BSA30 68/73 mm Bottom Bracket Bearings Steel Black
Rotor crank
All good and includes a tool for assembly.
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SRAM DUB PRESSFIT MTB 92 mm Bottom Bracket Cups
Good quality
Good quality, how long it lasts depends on how much mud it accumulates, 3 days in a row and you will need a pressure washer for the bearings. On dry ground it can last 6-8 months.
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SRAM connecting rod extractor screw for GXP M15 / M22 NX black
RACE FACE CRANK SCREWS
Everything OK, good price and fast delivery
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Shimano BB71 MTB Press Fit Bottom Bracket
What I needed
What I needed
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SRAM BB GxP Team 73-68 mm English Thread MTB/Road Bottom Bracket Cups
Unbeatable product.
Like all Sram products, superb quality, good packaging and easy assembly
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Miche Team 50/34D 9/10V Crankset Black
what I expected, very beautiful
easy installation and attractive too
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Race Face Alloy Crank protectors for black aluminum cranks
Perfect
They fit perfectly on Shimano cranks
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Shimano Tiagra BSA RS500 Bottom Bracket Cups
Good quality. Easy installation. Very lightweight.
Shimano, always great, from their most basic to their most expensive piece.
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