Steering with better angles: When turning, the tires could be very close to the floor (27 DEG), improve the turning stable and efficiency. Waterproof Receiver box: With waterproof system design for Receiver box, but not use any rubber parts to proof. Also, the Receiver box doesn’t touch the chassis, to avoid the heat to interfere receiver’s working. The whole weight of kit is settled as: Center Diff move back, so the center of gravity will be much stable; Battery box is at front left, but close to horizontal center; Receiver box, servo, motor is at right side, and close to horizontal center. Due to the settlement, to keep the center of gravity as balanced as could. To combine the mount of battery box & mount of ESC to One mount only. Could fit for every size ESC. Wire arrangement is considerately: The design idea includes the arrangement of wire settled. Could easy to arrange all the wires and the brace will keep the wire out of stuck from center diff. Shock bladder: With brace design, to keep bladder solid, with much better reacting force. Adjustable Wing holder: In the normal setting, the height of wing is just a little higher than kit body (covered). It could adjust the height, higher or lower. With lower wing height, when driving upon jumping, it oculd make the kit stable, arrive to floor smoothly, won’t be reversed. Also, with special design on the wing holder, to make the wing as flat as possible, increase the durability. Front Spindle/Rear Upright with 3 adjustable holes: Could adjust according to request. Big Shock set: It’s 16mm inner diameter, with better efficiencies of shock absorb. Using thin tread tire – Khaos Tire: It’s popular tread in the market, and it’s upgrade version, increase the durability. Using bearing for Whole kit: Working smart. Center gear 43T x Bevel gear 13T setting. Rear Body mount, with buffer property: When striking happened, it could prevent body from crashed.