Everything new on the drivetrain: Now comes Srams Dub.

Sram's first big news for 2018 is not a wireless drivetrain. The US component giant has worked on the cranks and bottom bracket and is presenting a replacement for 24 and 30 millimeter spindles. The system is intended to be universally applicable, lightweight, durable and, as an exception to the trends of recent years, not disruptive, but also compatible with existing systems.

It's a bit complicated, and yet quite simple - what Sram has newly developed. Under the name "Dub" (actually a cool music style, at Sram an abbreviation for Durable, Unfiying Bottom Bracket), the company is saying goodbye to its own GXP bottom bracket standard, whose spindle measures 24 millimetres and the installation dimension 30 millimetres.

The new Dub spindle measures 28.99 millimetres and should be able to cope with all frames and installation standards. So the happy message is that for once the Sram engineers have come up with something that works with existing standards, the Dub story fits existing bottom bracket systems such as BSA 68, BSA 73, BSA 100, PF89.5, PF92, PF121, BB30 73 and PF30 73.

Since the new Dub standard is a little complicated, as I said, there is a series of pictures and a very informative Q+A from Sram.