Manley Pro Series Valve Spring Titanium Retainer Kit

The Manley Pro Series Valve Spring and Titanium Retainer Kit is a matched valvetrain set for high-revving engines. It is built to control the valvetrain with high-lift aftermarket camshafts. Each kit pairs performance valve springs with lightweight titanium valve spring retainers. The parts are engineered to work together, so you don't have to piece a valvetrain upgrade together from separate components.

Key Features:

• Super clean alloy valve springs: The springs are wound from clean, high tensile strength chrome silicon steel alloy. They get heat treatment and shot peen processing to help fatigue life and limit load loss.
• Titanium retainers: The retainers are CNC machined from certified, heat treated aerospace grade titanium bar stock. Their lighter mass helps the valvetrain stay stable at higher engine speeds and helps reduce valve float.
• Precision tolerances: The retainers are machined on Manley's own dual spindle CNC machines. Retainer angles and installed heights are held to tight tolerances for consistent fit and spring geometry.
• Matched components: The springs and retainers are designed to work together as a system. Kits are intended for use with matching Manley valve locks, which are made in-house with tight control over lock angle to mate precisely with the retainer.
• Built for high-lift cams: The designs minimize stress to support long service life with aggressive camshafts and increased rev limits.

This kit suits performance street, track, drag and time-attack builds. It is a good choice for engines with larger turbochargers, aggressive cams or ported heads, where the factory valve springs are no longer enough. Manley is a long-established name in performance engine internals, including pistons, connecting rods, valves and valvetrain components.