Mugen Seiki has announced their newest option tuning part for the MBX6 6T vehicles. This is not silver carbon fiber, aluminum bling, or even something that can be seen on the track. Instead, they have released their all new 1.05 Gold Clutch Springs. The new springs are slightly harder than the standard kit springs, but not as aggresive as the 1.10 Silver Springs. These new springs provide an excellent fine tuning fix to suit your style on various track conditions!