CNC-machined from Swiss 7075 T6 aluminum, this X1 chassis contains special cutout openings for increased flex. This chassis is preferred for and works well on medium and high-traction songs; not recommended for very-high traction conditions, where the #371016 Aluminum Chassis increases results. This aluminum flex framework generates more traction and provides enhanced steering. Utilized effectively by Team XRAY at many races, this chassis is a must have for every single serious racer. 24mm narrower than previous framework variations, eliminating connection with the track in corners while rolling, and providing enhanced cornering rate. Includes a slot for a composite battery backstop makes it possible for 5mm battery pack position modification with all the most regularly used cross-chassis alignment configuration. To be used with #371148 aluminum rear pod plate.