HCR Racing RZR-05420-1 Universal Gusset Kit HCR racing Sale! from $131.99 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. Tweet Made from HCR proprietary material and made to fit a wide range of applications. With 10mm and 12mm bolt holes as options, and including the Band-aid and strap pieces for reinforcement applications.