This is a replacement XRAY High Dynamic Yellow Clutch Shoe, and is intended for use with the XRAY NT1 and NT1 2009 Spec. The High-dynamic yellow clutch shoe for the High Dynamic XCA Clutch Set has a new smaller diameter and is CNC-machined from hard yellow clutch material. This clutch shoe provides less slippage and wear, and is recommended for medium to high-traction tracks.