WP550-M8

$345.00

Meet the horsepower benchmark. The WP550-M8 is Ward Performance's original big-bore weapon camshaft, built for 124 to 132 cubic inch 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.

Key Features & Rider Benefits:

  • 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 is Ward Performance's original big-bore weapon camshaft, built for 124 to 132 cubic inch 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.

Key Features & Rider Benefits:

  • 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.

PERFORMANCE PROFILE:

  • Effective RPM Range: 2500 - 6500 RPM

  • Recommended Engine Displacements: 124" to 132" big bore M8 engines

  • Ideal Rider: The rider who wants to make the number and beat the guy in the lane next to them; perfect for aggressive street performance in big bore builds

  • Recommended Static Compression Ratio: 11.5:1 or more (12:1 optimal for pump gas)

CAM SPECS:

  • Valve Lift (Intake & Exhaust): .550" / .530"

  • Intake Opens (BTDC @ .050"): 14 degrees

  • Intake Closes (ABDC @ .050"): 48 degrees

  • Exhaust Opens (BBDC @ .050"): 63 degrees

  • Exhaust Closes (ATDC @ .050"): 11 degrees

  • Intake Duration (@ .050" lift): 242 degrees

  • Exhaust Duration (@ .050" lift): 254 degrees

  • Intake Centerline: 107 degrees

  • Exhaust Centerline: 116 degrees

  • Intake TDC Lift (@ TDC): .146"

  • Exhaust TDC Lift (@ TDC): .124"

INSTALLATION REQUIREMENTS:

  • This is NOT a bolt-in camshaft. Supporting modifications are required.

  • Valve Springs: Requires upgraded valve springs capable of handling .550" lift

  • Pushrods: Requires adjustable pushrods

  • Lifters: Performance lifters recommended

  • Pistons: Requires high compression piston kit to achieve recommended compression ratios

  • Engine Tuning: Full professional tune recommended

FITMENT:

  • Cam Type: Not a bolt-in camshaft

  • Sold as: Cam only

  • Compatible with: Harley-Davidson 2017 to current M8 engines

  • Excludes: VVT models

  • Supporting Mods: Upgraded throttle body, intake manifold, performance exhaust, and high flow air cleaner recommended for maximum performance

  • Made in the USA