5DEV

5DEV starts with aerospace manufacturing and ends up at the trail. A division of 5th Axis — a San Diego CNC house that machines components for the aerospace and medical industries — 5DEV applies the same precision tooling and in-house manufacturing discipline to bicycle cranks, chainrings, and drivetrain components. The result is titanium cranks machined to tolerances that most bike brands don't approach, and a range of e-bike crank conversions that bring the same material quality to Shimano EP8, Bosch, Brose, and Specialized Turbo Levo motor platforms.

The RA Cycles 5DEV collection covers the full titanium lineup — MTB and RGXC cranks, eCranks for major motor systems, titanium chainrings in T-Type and multiple bolt patterns, ceramic bottom brackets, titanium pulley wheels, and the smaller titanium hardware that finishes a build the right way.