4P Pro 163 - All Motor Package R40 Honda (K Series) This is a lighter weight

This is a lighter weight symmetrical skirt design with unique DI dish design

aluminum rods have been used in many different types of racing from Top Fuel

Heads available in PRB and RSP/RBC Style water jacket arrangements

Steel Braided lines

3L at the same price point depending on your stroke and bore size choice

4P Pro 163 - All Motor Package R40 Honda (K Series) This is a lighter weightIntroducing 4 Piston Assembled Cylinder Head Packages. We pick the options for you to simplify your choices. If we were building the engine for ourselves, these are the parts we would use. Included in the Package 4 Piston Pro 163v2 CNC Cylinder Head with Bronze Valve Guides 4P Valves (37mm Intake, 30mm Exhaust) 4 Piston Advanced Performance RACE Valve Spring Kit Ferrea Valve Locks Viton Valve Seals Assembled Recommended Use K24 All Motor street or