Harley Davidson Oil Cooled Dealer take offs! Stage 3 Service Performed on these low mileage heads! Oversized Valves are installed with a competition valve job! +2mm oversized Intake valves installed for superior flow! 5mm oversized exhaust valves installed. These Ported and Polished heads will be a compliment to the other performance parts that are installed on your bike. Stage 2 -3 Heads are great for building stock 114ci to132ci motors. Turn your Stock Heads into Performance Heads! Stage 3 Heads will support 160 Horse Power and Torque! Gains can be expected in the range of 20 – 60 Horse Power and Torque over stock heads with a good cam and tune! Over a 60% power increase over stock can be expected with Stage 2 heads, big bore kit, and cam. Stage 3 modification includes. De-carbonize, Disassemble, and Inspect. Removal of powder coating of Combustion Chamber. Porting of both intake and exhaust runner. Polishing of both intake and exhaust runners to ideal surface. Fully polished exhaust keeps velocity high and carbon build up down. Retaining of factory guides, seats, and springs (unless upgraded). Competition Valve Job on both Intake and Exhaust valves. All gasket surfaces are cleaned up to assure proper sealing of gaskets. We have a 1 week turn around time on most of our services! Ported heads will create greater Volumetric Efficiency (cylinder fill) and Velocity (faster air speed), in effect producing more torque, and at the end of the equation this means more horse power! Resulting in faster acceleration, better throttle response, and a more efficient running engine. Thank you for your interest!