Supertech racing valve springs for the K-series(K20/K24) and F-series(F20C/C22C)are used by many race teams throughout the world. We currently have Supertech valvetrain in some of our race engines, so you they work. We sell what we use and would never steer our customers wrong.
The Supertech racing valve spring kit for the K20/F20 platform require the use of steel valve seat bases, which are included in the kit. Seat pressure is measured at 100lbs. @ 40.4mm. Spring coil bind is measured at 26.00mm and maximum net lift is measured at 14.40mm. These springs can handle just about anything on the market today. Great for roadrace, auto-x and drag racing.
Match these with a set of Supertech titanium retainers and you've got one hell of a bulletproof valvetrain!
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