When you upgrade from steel to Titanium Valve Spring Retainers you gain speed and power, because it is lighter and stronger than steel.
1)Name: Gr5 Ti6Al4V Titanium Valve Spring Retainer Seat with High Hardness
2)Material: Titanium Alloy Grade 5(Ti-6Al-4V)
3)Sizes: Many standard sizes and other customed sizes
4)Surface Quality: CNC machined + Polishing, Surface hardening, Coloring by anodic Oxidation
5)Features: Low weight,High strength
6)Applications: For car valves