BRODIX designed the 12x12 series for use in the dirt late model market.

The 12x12 has excellent wet flow characteristics due to a revised spark plug location. The combustion chamber and valve placement work extremely well with gasoline. The 12x12 RP has
the same features as the 12x12 with improvements that include a raised valve cover rail, .500 taller intake ports, and a tall short side radius. The new style spark plug angle and combustion chamber design give the 12x12