Reaper 521 Cam / M8 Motors

Features of the Reaper 521 Cam

• 521 chain drive cam for the Milwaukee-Eight
• Aggressive pulling power with a nasty sound; the Reaper 521 grind will shine in 114" and larger cubic inch engines with added compression ratio
• Ported cylinder heads are not required, but will complement the cam and add even more pulling power throughout the range
• Stock throttle body produces an excellent powerband; use of a high-flow throttle body may increase peak power numbers
• A high-flow exhaust system and air cleaner is highly recommended for optimal performance
• Feuling recommends matching the 521 cam with the Race Series oiling system, PART #09320199
• Requires high lift valve springs; see PART #09262973 or PART #09262974
• Heavy-duty one-piece pushrods are also highly recommended; see PART #09280091
• 2250 to 6250 rpm range

Reaper 521 Cam Fitment

• '17-'25 Harley-Davidson Milwaukee-Eight, excluding 121 inch VVT motors

Emissions: Drag Specialties lists this part as EMIS 3. What the emissions codes mean