Φ1.4mm is added as a variation of the sway bar wire for BD11. This wire is one rank stiffer than the previous lineup and is mainly used to limit roll on high-grip surfaces.
Compared to BD10, BD11 has a lower lever ratio and is more compatible with softer springs. However, on high-grip surfaces, the load transfer in the pitching (front-back) direction is moderate with softer springs, but roll tends to increase.
The Φ1.4mm stabilizer bar released this time will greatly expand the range of setting for high-grip surfaces.