Drag Cartel Stage 4 camshafts for the K Series Engines are manufactured from 8620 billet material. The Stage 4 camshafts are perfect for your track monster K-series engine setups. The Stage 4 camshafts work well with a 12:5.1 compression ratio and  Supertech Valve Springs and retainers are required to run these cams. They can be found here: https://kpower.industries/collections/engine-internals/products/supertech-valvertrain-kit-dual-valve-spring-retainer-combo-sprk-h1021d

• 8620 Billet Material
• Intake:14.5 mm Lift / .280 Duration @ .050
• Exhaust :13.2 mm Lift/.272Duration @ .050