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BTR DUAL SPRING KIT - .685" LIFT - SK702BTR DUAL SPRING KIT . 685" LIFT SK702 When you decide to take a walk on the wild side and exceed the . 660 limit of our popular Platinum Spring Kit, the next step is our . 685 Spring Kit. A higher spring rate and titanium retainers will ensure valvetrain stability with radical camshafts. This kit does NOT fit LS9 engines. The kit includes the following: SP010 16 SR001 16 SL565060 16 (bronze guide) or SL505060 16 (stock or powder metal guide) VS LS KIT

Lobes designed by BTR

I am working to have test parts made by mid-March

Billet steel turbine hub

Specs: 229/244

The kit includes dual polished springs

and durability in mind

these cams were designed to help achieve the highest overall power curve while also maintaining strict valvetrain stability and durability standards

coupled with thorough vetting on our Superflow Engine Dynamometer

3 or such applications that use a larger cam than stock

An aftermarket converter is a necessity for automatic applications

Replace your current Caltrac brackets

when using stock rocker arms