S&S Cycle 90-1004 S&S® Super Stock® Cylinder Head Kit For 3-1/2" and 3-5/8" Bore HD® 1984-'99 Big Twins - Natural Aluminum Finish organizer Finished in black wrinkle powdercoat

Finished in black wrinkle powdercoat

99207-WILLIEG

Drag Specialties 1222-0661

aggressive look while maximizing light output

S&S Cycle 90-1004 S&S® Super Stock® Cylinder Head Kit For 3-1/2" and 3-5/8" Bore HD® 1984-'99 Big Twins - Natural Aluminum Finish organizer Finished in black wrinkle powdercoatS&S Cycle 90 1004 These S&S Super Stock cylinder heads for 1984 '99 HD Evolution Big Twin engines feature a specially shaped combustion chamber and require special pistons that must be purchased separately. (Not compatible with stock style flat topped pistons) Large 2. 000" intake and 1. 605" exhaust valves and high flowing ports supply plenty of air for big inch engines. Compatible with cams with lifts up to . 650". Compatible with stock 3 1 2" or 3