Z Rack Height Extender, 10" (PURCHASE ONLY) Sale! from $ 20.00 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. GIVE YOUR Z-RACKS AN EXTRA BOOST! For Z-racks only 10" Height Extenders Chrome Finish set of 2 extenders Swedge Fit Tweet