Improving Harley-Davidsons for Over 35 Years


There are two basic ways to tune an engine: by the seat of your pants or Dyno. If you want to be absolutely sure that your engine is performing correctly and safely, you’ll want to Dyno tune it. We use the latest technology coupled with years of racing know how to get the most from your engine... safely.

Rosa’s Cycles has used for many years, our unparalleled state-of-the-art Dyno Room. The new Dyno Room has a controlled environment for consistent and accurate tuning of your motorcycle. With the ability to control the testing environment, our fully certified Dyno technicians can perform unlimited tuning combinations limited only by your imagination and performance goals. What are the benefits of Dyno Tuning service? Every stock motorcycle or radically modified race bike benefits from our Dyno Tuning service. Maximum peak horsepower is nice. But to fully achieve true maximum driveability throughout the entire RPM range, torque, horsepower, and air/fuel ratio must be in perfect harmony to deliver the optimal performance you demand.

Our Dyno technicians are fully certified and factory trained specialists. No other motorcycle dealership in the tri-state area has the combined knowledge and expertise of our Dyno tuning staff. Harley-Davidson Screamin’ Eagle® Race Tuner, Power Commander, S/S VFI Systems, and Thundermax, just to name a few...

Dyno tuning allows us to give your vehicle a tune-up of unparalleled quality, providing you with the smoothest, most economical performance possible from your motorcycle.