GKTECH R32/R33/R34 GTR ROLL CENTER ADJUSTERS (Order in)NOTE: This item is specially ordered from GKTECH Australia and usually takes around 3 4 weeks to arrive. Listing is for: 1x Pair of RCC adapters The GKTECH billet aluminium GTR roll center adjusters are an easy DIY bolt in and provide a notable difference in the handling of your vehicle, particularly for lowered cars. When your car is lowered, like most GTRs are, the lower arm will now be pointing slightly upwards which will lower the roll center