Pay in 4 interest-free payments of $80.00 Learn more
Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
Forester STI 6MT (3
WRX MY08-21
: 14472AA040
Some additional NVH should be expected
Max Boost = 50psi
GSC Dual Valve Spring and Ti Retainer Set FA 802008270 Forester STI 6MT (3KEEP YOUR VALVES UNDER CONTROL GSC's dual valve spring kit is their most extreme valve spring option for the FA20. Dual springs feature a heavier outer spring that handles the primary load requirements together with a lighter inner spring for added stability and control. A slight interference between the two springs helps dampen spring oscillations for more accurate valve control at very high rpm. The combined springs offer a high closing pressure
