HARLEY-DAVIDSON® PERFORMANCE UPGRADES & SCREAMIN’ EAGLE® STAGE KITS
At SY'S HARLEY-DAVIDSON®, we believe every ride should be exhilarating. Serving the Campbelltown riding community and the surrounding region for years, our exclusive performance offers and upgrades are designed to boost your bike's power, torque, and sound to a whole new level. It's time to unlock the full capabilities of your HOG and experience the road like never before.
ELEVATE YOUR HARLEY AT EVERY STAGE
Looking for an upgrade to take your Harley-Davidson motorcycle to the next level? Look no further than H-D® and our Screamin' Eagle Performance Upgrades.
Ready to experience your Harley-Davidson like never before? A Screamin' Eagle performance upgrade isn't just an enhancement—it's a transformation. Feel the surge in acceleration, torque, and raw power, accompanied by an exhilarating new sound that announces your arrival.
With a Stage IV upgrade, you could unlock up to 40% gains in performance*, unleashing the full, untamed potential of your HOG.
Don't just ride. Dominate the road. Our expert team is ready to help you choose the perfect stage for your ride and riding style.
Backed by Harley-Davidson's legendary quality and craftsmanship, every Screamin' Eagle kit promises uncompromising performance and peace of mind.
Our factory-trained performance specialists at Sy's Harley-Davidson are standing by to help you map out the perfect performance path for your motorcycle. Whether you’re ready for a Stage I refresh or a full Stage IV powerhouse build, we make the process seamless.
Why wait to feel the difference?
Contact us today to book your upgrade and transform your ride! Complete the form to book your personalised performance consultation. Let’s discuss your power goals, provide a detailed quote, and get you back on the road with the performance and sound you’ve always dreamed of.
Sy's Harley-Davidson
Sy's Harley-Davidson - Service
16 Blaxland Road, Campbelltown NSW 2560
Phone: (02) 4625 6666
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Trading Hours
SY'S HARLEY-DAVIDSON® Performance Upgrade FAQs
What Harley-Davidson® performance upgrades are available at SY'S HARLEY-DAVIDSON®?
We offer a comprehensive suite of Harley-Davidson® performance upgrades, ranging from Screamin’ Eagle® Stage Kits (Stage I through IV) to performance exhausts, high-flow air intakes, and upgraded suspension systems. Every build is tailored to your specific model—whether it's a Milwaukee-Eight® or a Twin Cam—to enhance power and torque.
Will performance upgrades affect my Harley-Davidson® warranty?
When you choose Genuine Screamin’ Eagle® Performance Parts installed by the authorised technicians at SY'S HARLEY-DAVIDSON®, your upgrades are designed to be warranty-compliant. Using street-legal performance components allows you to increase engine output while maintaining your factory protection and peace of mind.
What are the different Harley-Davidson® Stage Kits?
The Screamin’ Eagle® Stage Kits offer a clear performance path: Stage I focuses on air intake and exhaust; Stage II adds performance cams for torque or power; Stage III increases engine displacement with Big Bore cylinders; and Stage IV delivers maximum output with high-performance cylinder heads and throttle bodies.
Why should I have performance parts installed by an authorised dealer?
Installation by factory-trained technicians at SY'S HARLEY-DAVIDSON® ensures that your performance components are fitted to exacting factory specifications. We use specialized Harley-Davidson® diagnostic tools and data-backed tuning to ensure your motorcycle remains 100% reliable even with increased power output.
How do I get a quote for a custom Harley-Davidson® performance build?
To start your performance journey, contact our service team at (02) 4625 6666 or visit our showroom in Sydney. We offer personalised performance consultations to assess your goals—whether you want more overtaking torque for touring or aggressive street performance—and provide a detailed quote.