Castrol Edge have again committed support of the Top Alcohol division of the NZDRA Championship Drag Racing Series and with the reduction of events this season and wishing to maintain their exposure and valued support of the NZDRA Championship Series have added the popular Top Doorslammer division to their marketing portfolio. These 3000 horse powered cars are the quickest and fastest sedans in the world and accelerating them up to 380 kph in quarter of a mile make them very unpredictable and exciting to watch.

The 6^th of February is the date for the Northern Nationals which will be the first round for Castrol Edge Top Alcohol & Castrol Edge Top Doorslammer racers and with competitors needing a good result at this event for a chance to claim the New Zealand Championship title for 2011 good racing will be assured.