Whether on the street or at the track, these bolt-on RDP's Chrysler 300c / SRT8 cylinder heads are equipped with the highest quality parts and
technology available to deliver optimum performance.

5.7 -
Complete and ready to bolt-on out of the box! These Aluminum cylinder heads feature: Stock Locks, Retainers, Valve Guides, custom hardened spring locators, severe duty beehive Valve springs, and new 2.00/1.55 valves. Hand Finish/Blending of valve job.

6.1 -
Complete and ready to bolt-on out of the box! These Aluminum Cylinder heads feature bronze valve guides, machined locks, titanium retainers, hardened spring locators, severe duty beehive Valve springs, and larger 2.10/1.60 valves. Valve jobs are hand-blended from the seat to the port. Available ceramic coatings and dry film lubricants for combustion chambers and valves as well as PSI valve springs and Inconel exhaust valves.