Stage 4 Camshaft for Cummins 5.9L/6.7L (1989-2018)

Colt Cams proudly presents its advanced camshaft profiles optimized for the Cummins 5.9L & 6.7L B-series engines. Through extensive research and development, including dyno testing of over 50 combinations of durations, lobe separations, and installation centerlines, we have engineered superior performance grinds tailored for these applications.

Our Stage 4 camshaft is similar to the Stage 3 "Big Stick" with a larger exhaust profile. Great for max flow on large single turbos and compound turbos. No modifications are required for installation, though we recommend upgraded valve springs for operation above 3,000 RPM.

Quick Facts:

• 181/218 profile
• Drop-In installation on most engines
• Great for large single turbos & compound turbos
• Improved fuel efficiency
• Reduced smoke output
• Drop in exhaust gas temperatures (EGT)
• Reliable performance up to 4,400 RPM

*Always check valve clearances before installing any camshaft