Appropriate usage on carpeting and tracks with a greater traction, the automobile rotates better and drives better through corners. Fits both XB4 & XB4 2WD. Aluminum backside paid suspension system system system holders with fundamental suspension system Settings (I.S.S.) allows fast & easy suspension system system system system geometry environment. This XRAY concept completed up being introduced to the very first XB8 now could be carried round the 1/10 scale XB4. Making use of eccentric suspension system bushings devote aluminum suspension system system obstructs, alongside additional suspension system system system shims, the XB4 suspension geometry is totally modified.