The RockShox Linear XL Air Can Upgrade Kit increases the positive air volume of your 2023+ Super Deluxe Air shock, giving it a more supple initial stroke and making it a "Mini Vivid". With a more linear feel, your Super Deluxe gains a more coil-like initial stroke but retains the progressive air shock end stroke that we love! Includes air can, volume spacers, grease/lube, and new negative air spring. Compatible with any 37.5-45mm stroke Super Deluxe C1 or C2.