Manley Titanium intake valves for Alan Johnson Performance Engines (TFD, TFFC and Nostalgia AJPE 6) are one‑piece forged titanium with a 2.450in head diameter, 0.3415in stem and 5.600in overall length, sold as a set of eight. They reduce valvetrain mass for higher RPM capability, are CNC machined and precision ground, and are inspected for reliability in demanding racing applications.
Manley Titanium intake Valve Kit Alan Johnson Performance Engines TFD, TFFC, and Nostalgia AJPE 6