Crower 87001-16 Features:

Crower 87001-16 valve spring retainers, 16-piece set Machined from lightweight tool steel for valvetrain use 1.375 in. outside diameter with 10° lock angle design Provides an additional +0.100 in. installed height

Retainers Tool Steel 1.37 1.375 In. Od 10-Degree 16-Piece Features:

• 1.375 in. OD tool steel retainers for 10° locks, lightweight valvetrain design for reduced upper-end mass in performance engine builds
• 16-piece set for complete valve spring service, matched retainer coverage for multi-cylinder internal engine applications
• +0.100 in. installed height increase, supports valve spring setup tuning for performance-oriented camshaft and valvetrain combinations
• Precision-machined tool steel construction, built for high-rpm valvetrain stability and dependable lock-to-retainer fit
• Premium valve spring retainer upgrade, ideal for racing and street-strip engine assemblies requiring 10° retainer geometry