Machined carbon fiber and aluminum alloy Lightweight and durable than stock plastic frame Designed with performance and style for TRX4M With multiple shock mounting positions for maximum flex Designed to be a direct replacement for the stock TRX4M rails and body Item: RC Car Chassis Kit Compatibility: for TRX4M Material: Carbon Fiber(frames/electronics tray), Aluminum Alloy(roof cover/standoffs) Length: 150mm(5.91in) Thickness: 2mm & 1.6mm Weight: 26g (0.92oz) (weight without screws) Notes: Assembly required. Chassis kit only(with hardware), others not included. Suggested to use stock links or straight links set, high clearance links (lower link) will hit the eyelet of the upper link before the suspension fully compressors. Recommended to replace the stock electronics, to achieved better performance (AM32 ESC+mini brushless motor is recommended) , the stock ECM is too large and the space under the roof is limited. Colour:black Package Contents: 1 x RC Car for TRX4M Comp Chassis Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.