Xpress Barrel Progressive Springs
Hong Kong based onroad chassis manufacturer Xpress has released a new range of Barrel Progressive Springs for 1:10 Touring Car. Barrel shaped springs give a progressive spring action without changing the spacing of the spring. This resulting in a more predictable handling car improving lap consistency. Choose between 19 or 20mm widest width, with 19mm being stiffer than 20mm of the same coil number with both available in 5.0, 5.5, 6.0 and 6.5 coils.
Source: Xpress [rc-xpress.com]