Documents leaked by Durianrider indicate that Specialized is about to launch an extensive product recall on their S-Works Tarmac SL7 series of bikes owing to a potential failure of the steerer fork.
Introduction A question that crops up frequently is with regards to Specialized’s OSBB bottom bracket and what size it is exactly. The short answer is OSBB comes in 3 variants which are all called OSBB. 46×61, 42×68 and 46×73. A summary table is below, with the detailed drawings below that. Variant (Diameter x Width) (mm) […]