Meet the horsepower benchmark. The WP550-M8 Harley-Davidson Milwaukee-Eight camshaft is our original big-bore weapon, built for 124–132 cu in engines running 11.5-to-12:1 compression. A savage idle tells the story; crack 3,000 RPM and it pulls hard to 6,500 RPM, posting 170-plus HP with the right intake and exhaust. Street manners below 2,500 RPM stay intact, but this is not a bolt-in swap—plan on upgraded springs, pushrods, and a pro tune to let the cam breathe and dominate.
High Horsepower Focus: Specifically designed to produce very good mid to high RPM horsepower.
Aggressive Sound & Performance: Delivers an awesome aggressive lope at idle and a strong pull from 3000 to 6500 RPM.
Streetable Manners: Impressively maintains good drivability and low RPM manners despite its aggressive nature.
Durability by Design: Features a .550" valve lift for great valve train durability.
Beat Your Buddy: This cam was engineered to give you the edge and make serious numbers.
Meet the horsepower benchmark. The WP550-M8 Harley-Davidson Milwaukee-Eight camshaft is our original big-bore weapon, built for 124–132 cu in engines running 11.5-to-12:1 compression. A savage idle tells the story; crack 3,000 RPM and it pulls hard to 6,500 RPM, posting 170-plus HP with the right intake and exhaust. Street manners below 2,500 RPM stay intact, but this is not a bolt-in swap—plan on upgraded springs, pushrods, and a pro tune to let the cam breathe and dominate.
High Horsepower Focus: Specifically designed to produce very good mid to high RPM horsepower.
Aggressive Sound & Performance: Delivers an awesome aggressive lope at idle and a strong pull from 3000 to 6500 RPM.
Streetable Manners: Impressively maintains good drivability and low RPM manners despite its aggressive nature.
Durability by Design: Features a .550" valve lift for great valve train durability.
Beat Your Buddy: This cam was engineered to give you the edge and make serious numbers.
Requires Adjustable Pushrods.
Performance Lifters Recommended.
Requires high-lift valve springs.
High Flow Air Cleaner Recommended.
A Full Professional Tune is Recommended for optimal performance and to ensure engine safety.
Critical Notes:
Not for VVT equipped models.
Compatible with Harley-Davidson 2017 to current M8 engines.
Excludes VVT models.
