The Cycle-Rama CR550 FAFO Camshaft is a high-RPM performance cam designed for heavily modified Harley-Davidson Milwaukee-Eight engines.
The CR550 is intended for 139- and 143-cubic-inch big-bore builds, as well as properly built 124-, 128-, and 131-cubic-inch engines running approximately 12.1:1 or higher compression. Its proprietary lobe and transition-ramp design helps control the lifter at maximum lift and reduce valve bounce at high RPM.

Features
• Fits 2017–2025 Harley-Davidson Milwaukee-Eight engines
• Designed for 139- and 143-cubic-inch big-bore builds
• Can be used in properly built 124-, 128-, and 131-cubic-inch engines
• Requires approximately 12.1:1 or higher compression
• Strong mid-range and high-RPM power
• Proprietary transition-ramp lobe design
• Helps control lifter motion and valve bounce at high RPM
• Supporting cylinder heads, valve springs, fuel system, exhaust, and custom tuning required
• Professional engine building and installation recommended
This listing is for the camshaft only. Installation components, adjustable pushrods, lifters, valve springs, bearings, and gaskets may be required and are sold separately.