April Nitro Shock Upgrade: Xtreme 4×4 Promotion Zone Offroad Products is excited to announce a new promotion for the month of April 2012. Buy any qualifying complete Zone Offroad suspension lift kit between April 1 and April 30, 2012, and receive a free Nitro Shock upgrade! Watch the commercial Saturday and Sunday mornings at 11am during Spike TV’s Xtreme 4×4. If you missed the commercial your can check it out to get your code on YouTube. If you have any questions check the Zone website zoneoffroad.com/promo or contact your local Zone Offroad distributor.