Features:Rapido Swing Arm made by upgraded CNC alloy material to ensure stronger and durable, important to hold the rear axle firmly, keeping rear axle steady to allow the suspension to absorbs bumps and staying safety on road, mounting at the rear along with suspension on the back which taking that entire load.K01 Alloy :?C Light Weight: 2.85kg?C Long Lasting Use?C High Quality Material?C Just Plug and Play (PNP)