FA20 High performance valve spring set for the Scion FR-S and Subaru BRZ. Manufactured for us by PAC Racing springs using the finest Kobe wire and PAC's world renowned manufacturing processes. These springs drop in on the stock retainer to raise the seated pressure from 50lb to 68lb in order to give added protection and proper valve-train control in forced induction applications or higher rpm naturally aspirated applications. 68lb seat pressure at 32.6mm installed height using OEM retainer and base. 166lb open pressure at 11.5mm lift, maximum lift is 13.00mm FA20 High performance valve spring set for the Scion FR-S and Subaru BRZ. Manufactured for us by PAC Racing springs using the finest Kobe wire and PAC's world renowned manufacturing processes. These springs drop in on the stock retainer to raise the seated pressure from 50lb to 68lb in order to give added protection and proper valve-train control in forced induction applications or higher rpm naturally aspirated applications.

68lb seat pressure at 32.6mm installed height using OEM retainer and base. 166lb open pressure at 11.5mm lift, maximum lift is 13.00mm

Fits: Scion FR-S Kelford FA20 Turbo / SC Valve Spring Set
Scion FRS Kelford FA20 Turbo / SC Valve Spring Set
Subaru BRZ Kelford FA20 Turbo / SC Valve Spring Set
Toyota GT-86 Kelford FA20 Turbo / SC Valve Spring Set