Aluminum framework created from custom-produced 2.5mm Swiss 7075 T6 aluminum. The special long design with bent sides helps to ensure that different areas of the chassis have the appropriate flex - either stiff or soft - to diminish the CG. The accuracy milling allows the chassis to be rigid enough to perform correctly without danger of bending. Brand new positions for servo to achieve most useful ackerman place CNC-machined from top-notch 2.5mm Swiss 7075 T6 aluminum, the chassis is lightweight without impacting strength or rigidity, and it is additionally black colored coated at XRAYââ¬â¢s very own in-house fully-robotic coating line. Weight distribution, chassis width & length, and appropriate flex have all been included in to the design of chassis. This framework is 3mm longer then medium chassis. Long framework is suitable for lower hold area where you can go rear hub more front to achieve more drive shaft angle. Fits: XB2'20-21, XT2'21