The quality of the fuel has a great influence on the engine characteristics and for the ignition timing setting. HKS developed original fuel products utilizing the accumulated and expertise of technology for drag race activities.
DHOB have the satisfiable performance. They are a must for vehicles tuned for the drag race, drift, and time attack.

Gasoline additives developed by making full use of know-how gained by DRAG GAS development.
When a can of this product is mixed with 50 litters gasoline, about 2 octane increases for premium gasoline and about 4.5 octane increases for regular gasoline. For a track, it will add safety margin against knocking. In addition, it has cleaning effect of fuel injector.