Torsion Bars / ARB Group Buy **FIRST POST UPDATED**

[cwspellowe]

Standard gti6 is 20mm
Xsara VTS and ph3 HDI estate are 21mm, so a firmer suspension upgrade for the occasional fast roader
22mm is 25% stiffer than a 21mm bar, so aimed at more track oriented cars, or people who like hardcore fast roading
23.5mm is the stiffest you can fit without removing the trailing arms. Peugeot Sport used this size for tarmac and gravel rallies. Much firmer back end that standard and for most people too uncomfortable/skittish for normal road driving. Would need good dampers too, an underdamped highly sprung rear end would lead to plenty of arse-out moments. My personal choice though as the estate is heavy at the back end and rather low.