The RockShox MegNeg air can is suited for Deluxe and Super Deluxe rear shocks.

Features
Featuring more tunability than ever before, the Megneg air can provides an even larger negative volume, giving you more mid-stroke support, a plusher initial feeling, and more bottom-out force using fewer tokens.
Go ahead and tune your shock exactly to your ride.
Includes air can, tokens, seals, and decals.
Compatible with Deluxe and Super Deluxe rear shocks.

Mfr Claimed Weight
TBC