Triple valve springs need a retainer with three matching step diameters to properly seat each spring, and the PAC-R401-16 is sized to fit most 1.480 in. triple drag race spring packages on the market. Machined from American aerospace-grade 6AL4V titanium, it's built for max-effort street/strip and sportsman drag applications where the strength-to-weight ratio of titanium matters more than the lower material cost of a chromoly retainer.

PAC Racing Springs PAC-R401-16 400 Series Titanium Triple Valve Spring Retainer Set Features:

• Fits most triple drag race valve spring packages sized to a 1.480 in. outside diameter
• Standard 10 degree lock angle in a tall, standard-height profile
• Three step diameters (1.185 in. / 0.865 in. / 0.635 in.) to seat all three springs correctly
• Machined from high-quality American aerospace-grade 6AL4V titanium for strength with reduced valvetrain mass
• PAC buys mil-run titanium lots to hold consistent tensile strength and seam quality across every retainer