PAC Racing Springs 300 Series 7 Degree Valve Spring Retainer - 0.880 in / 0.640 in OD Steps - 1.235 in OD Dual Spring - Chromoly - GM LS-Series (Set of 16) AFR1506 Brinn flywheels only work with

Brinn flywheels only work with Brinn bellhousings

2007 - 2011 Lexus GS350

RPM Series

Matched To OEM Ride

Pressure Gauge

PAC Racing Springs 300 Series 7 Degree Valve Spring Retainer - 0.880 in / 0.640 in OD Steps - 1.235 in OD Dual Spring - Chromoly - GM LS-Series (Set of 16) AFR1506 Brinn flywheels only work withProduct Description: Valve Spring Retainer 300 Series 7 Degree 0. 880 in 0. 640 in OD Steps 1. 235 in OD Dual Spring Chromoly GM LS Series Set of 16 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