MRP Ramp Control Cartridge Model D Short Travel for RockShox Pike 15 x 110 (Boost) 2015-2016, Pike (all models) 2017-2019, Lyrik, Yari 2015Ramp control adds speed sensitive ending stroke bottom out adjustability to forks. At high shaft speeds, the cartridge it mimics the addition of volume reducing spacers in the fork. At low shaft speeds it allows the fork to be more active. Adds speed sensitive ending stroke control and bottom out force adjustability Isolate and tune bottom out with minimal changes to initial and mid stroke Easily change tune for different trails without tools Product