The 2.5mm chassis produced from harder graphite product originated for very-high traction conditions, or when using tires that provide many steering helping to make the automobile more difficult to drive. This harder framework makes the car more stable and easier to drive, and removes oversteering. The framework had been redesigned to support the Tweak-Free Pod System and side braces. The X1'21 framework continues to supply a wheelbase adjustment using among three mounting jobs the front suspension. With respect to the installation choice, wheelbase are chosen through the standard size or +/- 4mm options. Fits X1'21 #371027 X1'21 Graphite Chassis 2.5mm - Hard
