The small set of H&R bars do stiffen up the chassis a fair degree. The one wheel bump ride comfort is reduced; but ...
On my trip up to Queensland, I headed from Newcastle up the New England Highway through towns such as Singleton, Mussellbrook, Tamworth, and Tenterfrield.
On these interior country roadways, the KW V3 on almost full soft settings (@ 12% from full soft) were too firm. The ride was bearable, but not comfortable. Add more passengers, and the ride only becomes firmer, esp in the rear spring progressive spring rate.
In this regard, its the compression & rebound rate & much higher spring rate that detract from the ride, more so than the small set of H&R sways bars. The 18 inch huff wheels have to take about 25% of the blame in addition to firmer suspension.
On the other hand;
The drive from Byron Bay to Gold Coast on Pacific Highway (Route - 1), which resembles the European style smooth 100-110kph freeway, the KW V3 were fantastic. Still a tad firm, but very well suited to this type of environment (autobahn/autostrada). 180 degree freeway slipways has the GTI sitting nice and flat, and the limit of adhesion is so high and chassis so neutral. Same for the smooth tight twisties ... just so composed, secure and solid.
Traversing average to poor B-grade roadways from Sydney to Queensland consisted of about 70% driven on the interior trip (New England Hwy) and 30% on smooth roadways ... I guess its 70% in favour of the sports comfort HPA KW SHS coilover kit for NSW roadways ... and 30% in favour of the KW V3 for smooth freeways (or maybe 75%/25% on second thought).
That's why I'm advocating the HPA KW SHS coilover kit for local conditions ... esp B-Grade roadways. If you do any competition or club days, then KW V3 are liveable, but not as comfortable.
I may add this & more to my long distance drive review of KW V3 when time permits.
Queensland roadways are so much better than what NSW has to offer, which is a real shame for us southerners.
Cheers
WJ