This flexible chassis has been significantly modified from the jig-built flexible chassis. The specifications are as follows: Raigeki Pink Special "Pink Special ABS resin normal center used" Underside Raised Liner Included "To prevent the chassis bottom from hitting the ground when using 23mm tires, raising the chassis bottom is essential. A liner is inserted to raise the bottom by about 1mm and polished." Battery Cover Removed "The battery is held in place with a rubber liner for weight reduction." Damping Rubber "Provides strong damping to keep jumps low and landings smooth. Black spring, pre-cut by one coil, essential for 3D courses." Third-Party Carbon Stays "The chassis shaft is cut, and black aluminum screws are used. Carbon is used for anti-sagging because it securely fixes the shaft, allowing for longer use and eliminating irregularities." Axle Hole Reamer Applied "Axle holes have individual differences, and some holes may not fit 620 bearings, so they have been expanded with a 6mm reamer." Spur Gear Relief Processing "The gear covers have been shaved to prevent the spur gear from contacting them." Front and Rear Bumpers Reinforced with 1.5mm Bottom Raising "Bottom raising is essential for bank through when attaching brake stays. Also, because the base becomes weaker by raising it, carbon reinforcement is applied from the inside and reinforced with black instant glue on both the front and rear." Bumper Cut "The post-processing after bumper cutting has not been touched. It is recommended that you adjust it when installing AT or anchor systems." Normal Terminal Voltage Adjusted "If the normal terminals are well-polished, they will have good electrical conductivity and can be used longer than gold terminals, which get scratched. Each voltage has also been increased with brakes." Counter Gear POM Support "The counter gear is supported by POM from a low-friction plastic bearing set, which is expected to increase torque due to low friction. 520 bearing installation is recommended." The chassis is designed to be durable and stable. It is a chassis that bottoms out quite a bit, so gear relief is also necessary to prevent it from going through. The voltage increase can change the speed by 1000 RPM, so the voltage increase is considered, the motor is securely fixed, and the chassis has a solid suspension and good damping. The switch sticks out, so please cut it to your liking. Thank you very much.