PPE Mercury 2.5 Liter Drag/260/Promax/FF Billet Heads
Exclusive, PPE Mercury 2.5 Liter O-ring Heads are engineered and custom CNC built from aerospace-quality 6061 billet aluminum. Our modular cylinder heads are engineered with quick-change combustion chambers with improved geometry and cooling to increase HP.
Our head kits include; 1 Port and 1 Starboard cylinder head w/ anodize finish (durable, corrosion-resistant finish) and 6 combustion chambers (1 set of 6).
*Additional sets of combustion chambers (17 to 36cc) for customized compression ratios are available for $195 per set to meet all your performance needs. Please specify your preferred CCs for Set 2 in the notes section of the shopping cart.
Head uses 3/4'' spark plugs to allow for greater chamber geometry.
These heads fit all Mercury 2.5 Liter 2-Stroke Outboards manufactured between 1991 to 2005 with either gasket-heads or O-ring-heads. Please specify your preferred color and chamber CCs.
Optional Water outlet kit, 3/4'' reach Spark plugs and Head O-rings can be found in the online store.
Uses (not included) OEM Drag combustion O-rings on the Drag and 280. Water jacket outer O-ring is factory Drag or 280 bolt pattern.
Unlike the "expertly engineered” imitations of our product we actually understand the engineering, testing and validation in building these heads for more than 15 years and developing them into what they are today.
We have dynamometer tested and built more of these 2.5s for professional race teams than we can remember over the last 25 years in business allowing us to give you real advice on the right combination and set up.