If you have a 30mm spindle road or mountain bike crankset (or power meter) and a frame with a threaded bottom bracket, BBInfinite has the BB for you. Their new BSA30 Ultra-lite claims to be the world’s lightest bottom bracket solution for the BSA+30mm spindle pairing, and doesn’t even require a specialized tool for install.
BSA30 Ultra-lite 30mm spindle, threaded bottom bracket
Weighing just 64g for the pair of cups and bearings, BBInfinite’s BSA30 Ultra-lite bottom bracket comes standard with ABEC-7 stainless ball bearings for $105. Or for even smoother spinning cranks, you can upgrade to Ceramitech ceramic balls for $155 for the pair of cups.
The BSA30 cups are the same outer diameter as a typical Shimano external BB and share the same 16 outer notch design, so you can use the same wrench you already have in the toolbox. Their low-profile form also means the BB offers maximum clearance between cups and the backside of your cranks, making them especially useful to clear power meter back plates and electronics.
The 6061 T6 alloy BB cups are said to work with most “long-pattern” 30mm spindle cranksets from SRAM, Rotor & RaceFace, to name a few. They are recommended for both 68mm BBs for road cranks and 73mm BBs for mountain cranks.
BBInfinite’s aluminum threaded bottom bracket cups are manufactured in the US. The BSA30 bottom bracket is available now for English BSA threaded bottom brackets, with an Italian threaded version coming soon.