Original top deck enables modification of longitudinal flex. You will find three longitudinal flex opportunities: top deck with tightened nut, top deck with loosened nut, or no top deck. Thanks to this new flex modification feature, the car can be easily set for various traction conditions or tires. The utmost effective deck with tightened nut removes longitudinal chassis flex and makes the car better to drive in high-traction conditions or when softer tires are used. The most effective deck increases steering reaction, but in addition is more forgiving since it makes the vehicle more accurate. The most notable deck with loosened nut is a compromise between very little and plenty of longitudinal flex. This setting is preferred on moderate traction conditions since it makes the steering reaction a little less but improves mid-corner steering and provides better on/off power feeling. Utilizing no top deck is recommended for low-traction tracks as it provides best mid-corner steering. The very best deck features also hole allowing mounting the shock adaptor once the long-shock configuration is used.