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The bottom bracket is one of the hardest working parts on a bicycle. It has to endure countless miles of repetitive use whilst being exposed to a variety of weather conditions. This is why we created the ÆRA No. 1 bottom bracket, offering the very best UK designed and manufactured component to ensure that all of your effort is transmitted as efficiently as possible through to the drivetrain whilst also creating a beautifully styled and machined part that complements your bicycle perfectly.
Optimised to sit perfectly flush with J.Laverack’s Streamline bottom bracket shell design, but also suitable for any other frame, this bottom bracket also features a central sleeve which ensures that there is a barrier between any brake or gear cables and the spindle / axle of the chainset.
Available with steel bearings as standard or ceramic bearings as an upgrade.
English BSA standard
Weight: 88 grams
UK designed and manufactured
Designed for either Road or Gravel bikes
Machined from aerospace grade 7075-T6 aluminium
Machined 7075-T6 aluminium central sleeve
Machined 7075-T6 aluminium bearing covers
Suitable for 24mm spindle cranks
Stainless angular contact bearings
The perfect finish touch to any bespoke build
Easy to install
Super smooth
Beautifully finished
Each ÆRA No. 1 bottom bracket central sleeve features a short tribute to the company that originally invented the BSA standard back in 1880’s.
Designed, engineered and manufactured in the UK, our top tier bottom bracket performs faultlessly in all conditions and is made in small batches.