BTR 685 Platinum LS valve spring kit

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  • Regular price $359.95

685" Lift Dual Spring Kit for LS engines using Limited stock rocker arm setups and Roller Rockers.  Includes dual springs, matching titanium retainers,  locators for stock guides, locks and seals. 


Spring specs are 170 lbs @ 1.800", 380 lbs @ 1.180", 450 lbs @ 1.115, coil bind @ 1.000"  This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA, etc.


This kit will not fit LS9 engines