GSC P-D Stage 3 Beehive Valve Springs w/ Titanium Retainer Valvetrain Kit Mitsubishi EVO 7 / 8 / 9 Vehicle Model_Lancer Evolution 10 a lot more stress is

a lot more stress is placed on various components

RaceComp Engineering Yellow spring rates are an aggressive 365 lbs/in front and 360 lbs/in rear that match the new OEM valving on the 2015 STI

Must use ACT Flywheel (included in kit)

as well as drag

GSC P-D Stage 3 Beehive Valve Springs w/ Titanium Retainer Valvetrain Kit Mitsubishi EVO 7 / 8 / 9 Vehicle Model_Lancer Evolution 10 a lot more stress isPart #: 5041 The Stage 3 Single Beehive valve spring set, includes new 4340 Chro molly spring seats and Titanium Retainer set. This kit is capable of 11000+ RPMS, with as much as 12. 5mm of lift. This is a must have for anyone pushing the limits of their Evolution. If you have had problems with valve float or throwing rocker arms this is the spring set that will cure your problems. Spring Retainer Kit; Beehive Single High Pressure Spring; Titanium