Screamin’ Eagle Stage upgrades offer complete street compliant performance configurations engineered to generate specific torque and horsepower gains for Sportster ® , Twin Cam and Milwaukee-Eight TM engine families. Eliminating all the guesswork and trial-and- error testing normally associated with engine modifications. Stage upgrades include everything needed to enhance the bike’s performance. “I want simple bolt-on performance upgrades that enhance the performance, look and sound of my motorcycle” SCREAMIN’ EAGLE ® STAGE KIT OVERVIEW TORQUE: “I want instant passing power at cruising and highway speeds” POWER: “I want to feel the power build and then pull all the way to the redline” • Most cost-effective step to improve performance • The foundation for future performance upgrades • Match any Screamin’ Eagle high-flow air cleaner and exhaust, along with the proper ECM calibration to increase the air flow into and out of the engine • Choose a TORQUE CAM or POWER CAM based on riding style • A performance cam increases both the lift in the valve train (pushing the valve open further) and the duration of the valve opening (how long the valve stays open) • An increase in engine displacement allows the engine to swallow more air and fuel, a higher compression piston squeezes the air and fuel into a more volatile mixture and when combined, generates more power when ignited • Displacement increases are accomplished with larger cylinders, matching pistons, and the proper cam upgrade • Highest level performance upgrade available to provide a maximum increase in displacement, compression and flow • Higher-flowing CNC ported cylinder heads and larger bore throttle body increase the velocity and feed large volumes of air and fuel into the engine, which maximizes power on a larger displacement engine “I want instant power that lasts throughout the entire RPM Range. Bigger is better.” “I ride hard and want the absolute best performance upgrade available. Try to keep up...I dare you!” HARLEY-DAVIDSON ® PARTS & ACCESSORIES SPOTLIGHT
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Screamin’ Eagle Stage upgrades offer complete street compliant performance configurations engineered to generate specific torque and horsepower gains for Sportster®, Twin Cam and Milwaukee-EightTM engine families. Eliminating all the guesswork and trial-and-error testing normally associated with engine modifications. Stage upgrades include everything needed to enhance the bike’s performance.
“ I want simple bolt-on performance upgrades that
enhance the performance, look and sound of my
motorcycle”
SCREAMIN’ EAGLE® STAGE KIT OVERVIEW
TORQUE: “ I want instant passing power at cruising and
highway speeds”
POWER: “ I want to feel the power build and then pull all
the way to the redline”
• Most cost-effective step to improve performance
• The foundation for future performance upgrades
• Match any Screamin’ Eagle high-flow air cleaner and exhaust, along with the proper ECM calibration to increase the air flow into and out of the engine
• Choose a TORQUE CAM or POWER CAM based on riding style
• A performance cam increases both the lift in the valve train (pushing the valve open further) and the duration of the valve opening (how long the valve stays open)
• An increase in engine displacement allows the engine to swallow more air and fuel, a higher compression piston squeezes the air and fuel into a more volatile mixture and when combined, generates more power when ignited
• Displacement increases are accomplished with larger cylinders, matching pistons, and the proper cam upgrade
• Highest level performance upgrade available to provide a maximum increase in displacement, compression and flow
• Higher-flowing CNC ported cylinder heads and larger bore throttle body increase the velocity and feed large volumes of air and fuel into the engine, which maximizes power on a larger displacement engine
“ I want instant power that lasts throughout the entire
RPM Range. Bigger is better.”
“ I ride hard and want the absolute best performance
PRO STREET TUNERAll Screamin’ Eagle® performance upgrades require Engine Control Module (ECM) recalibration, also known as tuning. The best method for tuning your stage upgrades is with the Screamin’ Eagle Pro Street Tuner.
STAGE IA Stage I upgrade increases the flow of air into the engine and exhaust flow out of the mufflers and provides the tuning for the flow changesproducinga5-10%increaseinperformancetheridercanfeelthroughouttheentireRPMrange.Thisisthefoundationforother upgrade levels.
INTAKE EXHAUST TUNINGScreamin’ Eagle® Heavy Breather Performance Air Cleaner – Milwaukee-Eight™ Engine
Screamin’ Eagle® Street Cannon PerformanceSlip-onMufflers–4.5”
Screamin’ Eagle® Pro Street Tuner
Screamin’ Eagle® Ventilator Air Cleaner Kit – Milwaukee-Eight™ EngineScreamin’ Eagle® High-Flow Air Cleaner – Milwaukee-Eight™ Engine
STAGE IIAStageIIcamupgradeallowsriderstocustomizewheretheywanttofocuspowergainsbasedonridingstyle.Riderscanchoosebetween Torque or Power Kit.
POWER KIT TORQUE KITAdrenalin-pumping burst of speed while heading toward the redline, the additional power startstobuildat3000RPMtoanincreaseofupto24%HORSEPOWERatredline.
Experience crisp throttle response and acceleration they can feel at slower speeds, 5%increaseintorquecanbefeltimmediatelyoffthelineandcontinuestoclimbforuptoa14%increaseinTORQUEat4500RPM,whichisperfectforpassingslow-moving vehicles without downshifting.
STAGE IIIA Stage III upgrade increases the engine displacement and adds a performance cam, providing an overall increase in torque throughout theentireRPMrangewitha24-39%improvementinthemid-rangehorsepower.Twoupgradekitsareavailable:• Takeafactory107toa114CIengine• TakeaCVO™114toa117CIengine