PAC Racing Springs 400 Series 10 Degree Titanium Valve Spring Retainer - 1.040 in / 0.715 in OD Steps - 1.050 in Dual Spring 9057-313 Subsequent development led to numerous

Subsequent development led to numerous versions and designs

including iridium

0-T6 Aluminum Construction

drag ''R'' series adjustable and non-adjustable valving options

Serrated Block

PAC Racing Springs 400 Series 10 Degree Titanium Valve Spring Retainer - 1.040 in / 0.715 in OD Steps - 1.050 in Dual Spring 9057-313 Subsequent development led to numerousProduct Description: Valve Spring Retainer 400 Series 10 Degree 1. 040 in 0. 715 in OD Steps 1. 050 in Dual Spring Titanium Sold Individually Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and