MiniTrencher GeoRipper GRTA-S500-NOEZ S-Series 20" TA Kit without EZ Kart for Stihl® Engine - The GeoRipper® S-Series 20" TA Kit is a bolt-on and bolt-off trenching attachment kit that fits on a Stihl® TS420 or TS500i engine (engine not included). It allows users to convert their power cutter (Stihl® TS420 or TS500i) into a GeoRipper® minitrencher, and back, in minutes. It features a new safety bar and dirt deflection system to keep the soil on the ground and fingers away from moving parts. Please note that this kit does not include the MiniTrencher EZ Kart.