MRP Ramp Control Cartridgesuspension tuning reimagined MRP just made suspension tuning that much easier and more convenient. Their Ramp Control Cartridge allows riders to fine tune suspension out on the trail, and without tools. No longer is there a need to remove lower legs, or brink your fork to the shop to adjust bottom-out. The cartridge is easy to install, super lightweight, and offers convenient adjustment options. Use it to customize speed-sensitive settings on compatible Rockshox forks without the use of tools. Features Compatible with Rockshox Pike, Lyrik, Yari, and Boxxer World Cup forks (Solo-Air models only)Weight: 55g Allows isolation and tuning of bottom-out with minimal effect on initial and mid-stroke Ramp Control Compatibility Matrix HERE | Mrp | Ramp Control Upgrade For Rockshox 35Mm, Model B, Long Travel, Fine Thread