GKTECH Z34 370Z/V36 SOLID DIFF BUSHES (not raised) (Order in)NOTE: This item is specially ordered from GKTECH Australia and usually takes around 3 4 weeks to arrive. Listing is for: 1x Set of solid diff bushes OEM Height (not raised) The GKTECH diff bushes are a direct replacement of the standard items and ensure that movement of the diff is kept to a minimum within the subframe, which is quite common under hard driving conditions. In addition to limiting the movement of your rear diff, our risers raise the