Bottom Brackets

Keep things running smooth on your bike with a replacement or upgraded bottom bracket and discover our range of bike bottom brackets from leading cycle component brands.

Premium BMX bottom brackets, road bike bottom brackets and MTB bottom brackets sourced from the likes of Nukeproof, FSA, Token, CeramicSpeed and other top-quality brands ensure that every cyclist can find their ideal bottom bracket.

Being one of the two most crucial bearings on a bike, the bottom bracket is often a part that riders wish to upgrade or replace when the time is right. Allowing the pedals and crankset to rotate freely – there are decisions to be made about bottom bracket type, with the three main designs being cartridge type, external bottom brackets and press fit brackets.

Whatever cycling discipline you enjoy, find a boss-level bottom bracket along with many other components at Chain Reaction.