This is a rear suspension stroke-up part for the FCX24. It's equivalent to the CC01's stroke extension link. It adds a stay to the upper part of the rear damper. It can be installed without modification. Please refer to the video below for installation instructions: youtu.be/QJUUpbE6skU Here's how it performed during prototype testing: youtu.be/4eSbVlesy_Y Improvements have been made since the prototype, and ball bearings have been added, so it moves smoothly even when the screws are tightened to a certain extent. The bearings are already pressed in. It will be shipped in a pre-assembled state (photo 1, lower left). The product is made by a layered 3D printer. The material is PLA+, and the layer thickness is 0.15mm. The screw holes are tapped. Please be careful not to overtighten the screws. The parts are made to fit my own chassis, so you may need to make adjustments depending on individual variations. The product will be packaged in bubble wrap and an envelope. Thank you.