(4) Suspension Insert Rings

They aim for an optimal strength vs weight and stiffness ratio

All of what you need

Kits contain enough materials for both front and rear derailleurs

Cons: Polarising appearance

KS Southpaw Remote Lever - Alloy - 2020 - 22.2mm Bar Clamp Back in Stock (4) Suspension Insert RingsSpecifically designed for 1x setups. The Southpaw mounts underneath the left handlebar so you can safely actuate your dropper post without sacrificing your grip. Compatibility: Intended for use with KS dropper posts, however, the lever has the ability to be fed either direction making it compatible with all dropper posts. Previous models were available in a 22. 2mm split clamp bar mount only, but options will be available for Shimano I Spec II, I Spec