2009 H-D Screamin' Eagle® Pro Racing Parts ... - Harley-Davidson

A. SCREAMIN’ EAGLE PRO MAXIMUM VELOCITY AREA (MVA) CYLINDER HEADS – CNC PORTED
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A. SCREAMIN’ EAGLE ® PRO MAXIMUM VELOCITY
AREA (MVA) CYLINDER HEADS – CNC PORTED
The most advanced Twin Cam performance cylinder head
design available. Screamin’ Eagle ® CNC Ported Maximum
Velocity Area (MVA) cylinder heads create power across
the entire RPM range by maximizing velocity through the
intake ports. Increased air speed velocity through the ports
is achieved by “right sizing” port volume at 98cc, lowering
the port roof, and by precision machining the shape
of the port to complement the giant 2.125" intake valves.
Screamin’ Eagle CNC-Ported MVA Cylinder Heads conquer
a unique engineering challenge, and provide the highest
possible torque and acceleration at any RPM. MVA Heads
will boost the punch of a 103" engine. When paired with
high lift cams, MVA Heads can give a 110" or 113" motor
everything it needs to achieve new levels of performance.
Countless hours of dyno testing resulted in a 95cc combustion
chamber that performs in perfect balance with the port
size and shape, and reduced detonation. MVA Heads feature
Screamin’ Eagle Race Springs that permit the use of high lift
cams (up to .650"), and are machined to accept automatic
compression releases (sold separately) for easier starting.
MVA heads are manufactured and assembled at Harley-
Davidson’s world class engine factory in Milwaukee, insuring
every set is made to exact tolerances. All EFI Models
require ECM calibration (priced separately). For race applications
only.
Fits ’99-later Twin Cam equipped models. ‘99-’05 models
require separate purchase of (2) Intake Seal Flanges P/N
26993-06.
16925-08 Black Highlighted. $1,399.95
16934-08 Silver Highlighted. $1,399.95
NOTE: See matrix on page 36 for recommended cylinder/
cylinder head/piston combination.
CAUTION: Screamin’ Eagle Adjustable or Perfect Fit Pushrods
are required for installation.
B. SCREAMIN’ EAGLE PRO TWIN CAM 110+
CYLINDER HEADS
Displacements of 110" and greater present a unique engineering
challenge for cylinder head design. Screamin’ Eagle
Pro 110+ Cylinder Heads answer the challenge. The fusion of
the most current race-proven technology has been combined
with the tribal knowledge of race track mechanics to build a
winning design. These 10.5:1 high compression ratio cylinder
heads are machined to accept Automatic Compression
Releases P/N 28861-07A (sold separately) for starting ease.
The Combustion chamber shape and volume (95cc’s) were
designed in concert with port size and contour to optimize
the system. Add in huge 2.120" intake valves and 1.623"
exhaust valves to promote easy breathing, efficient burn,
and commanding power for displacements of 110 cu. in. and
greater. These heads are assembled with Screamin’ Eagle
Race springs that allow use of cams with up to .650" of lift.
World class manufacturing at Harley-Davidson’s Milwaukee
engine factory insures every set of cylinder heads is made
to exacting tolerances. All EFI models require ECM calibration
(priced separately). For race application only.
Fits ’99-later Twin Cam engines.
17071-08A Black Highlighted. $1,149.95
17072-08A Silver Highlighted. $1,149.95
NOTE: See matrix on page 36 for recommended cylinder/
cylinder head/piston combination.
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CAUTION: Screamin’ Eagle Adjustable or Perfect Fit Pushrods
are required for installation.
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B. SCREAMIN’ EAGLE PRO TWIN CAM 110+ CYLINDER HEADS
CYLINDER HEADS 37
TWIN CAM MODELS