4 Piston Advanced Performance RACE Valve Spring Kit (K-Series) Tools then shipped to Callies to

then shipped to Callies to be finished

This tensioner combines OEM reliability with a critical motorsports upgrade

Newen CNC Race Spec Valve Job

4P Exclusive Billet Camshaft

This is critical for many D16 owners that are running smaller lift camshafts

4 Piston Advanced Performance RACE Valve Spring Kit (K-Series) Tools then shipped to Callies to4 Piston Racing is proud to introduce a superior valve spring at a competitive price point. Many of the K Series valve springs currently on the market were developed so long ago that they did not consider the RPM range and camshaft size of today's Honda K Series performance engines. We have developed this valve spring kit with high purity large diameter wire so that you can run any of the popular camshafts on the market and operate the engine at