Press-fit bottom brackets catch a lot of complaints, but most of the creaking and longevity issues trace back to installation rather than the design itself. SRAM's PressFit 30 Bottom Bracket uses composite cups that press directly into PF30 frame shells, eliminating the metal-on-metal interface that can accelerate wear in alloy cups. The composite material also provides some vibration damping and conforms slightly to frame shell tolerances, which helps with the fit issues that plague some press-fit installations.

This bottom bracket accepts any 30mm spindle crankset, which covers SRAM's road cranks like the Red, Force, and Rival lines, plus Truvativ mountain cranks and third-party options from manufacturers like Rotor and Praxis. The included spacers let you run the same unit in either 68mm road shells or 73mm mountain shells without buying separate versions. Steel cartridge bearings handle the spindle interface, providing the durability that makes sense for a component sitting in the pedaling force path.

Installation requires a press-fit tool that applies even pressure across the cup face. The composite cups are more forgiving than aluminum during installation, but going in crooked still causes problems down the line. If your frame shell is out of spec or has surface contamination, address that first. A properly installed PressFit 30 runs quiet and lasts through multiple seasons of riding before the bearings need attention.... Read More