The Ferrea Titanium Retainer TB48 Single (Set of 24) provides lightweight, high-strength retainers for single valve spring setups in Nissan TB48 engines.

​The Ferrea Titanium Retainer TB48 Dual (Set of 24) offers lightweight, high-strength retainers designed for dual valve spring setups in Nissan TB48 engines, enhancing valvetrain stability in high-performance applications.

Ferrea E12001 Titanium Retainer Set for LS1/LS7, set of 16, 7° profile

Ferrea E12001 Titanium Retainer Set for LS1, set of 16, 7° profile

The Ferrea E12002 Titanium Retainer Set for Chevrolet L92 engines (16 pieces) is designed for dual spring applications with a 7° CNC profile

Ferrea E12014 Titanium Retainer Set for LS1/LT1, set of 16, 7° Pro CNC profile, approx

Ferrea Titanium Retainer for Toyota 1GR-FE Single, set of 24, aerospace-grade titanium, 7° Pro CNC profile, 40% lighter than steel.

Ferrea Titanium Retainer for Toyota 1GR-FE Dual, set of 24, aerospace-grade titanium, 7° Pro CNC profile, 40% lighter than steel, for high RPM reliability.

Precision CNC-machined from aerospace quality titanium, these Pro Retainers are fully heat-treated and finished to exact tolerances, adding strength while offering a 40% weight reduction over conventional steel retainers

The Comp Cams 7° Lightweight Tool Steel Retainers are designed for 1.320" spring diameter, offering enhanced strength and performance in high-performance engines.

The Comp Cams 7° Lightweight Tool Steel Retainers are designed for 1.290" spring diameter, offering strength and performance for high-performance engine applications.

The Comp Cams 0.559" Max Lift LS6+ Beehive Valve Spring Kit with Tool Steel Retainers is designed for GM LS engines, offering durability and high-performance lift capability.

BC Titanium Retainer 2JZ is a lightweight, high-strength titanium valve retainer designed for the Toyota 2JZ engine to enhance performance at high RPM.