What Is Harley Davidson Stage 4

Expect to feel exceptional acceleration delivering significant gains and up to a 50 increase in the higher RPM range.

What is harley davidson stage 4. That is the Stage 4 upgrade. When installed by an authorized Harley-Davidson Dealer within 60 days of the vehicle purchase compliant kits do not impact the vehicles limited warranty. Youll feel the difference as soon as you twist the throttle.

The new Screamin Eagle Street Performance Stage 4 Kit 103 Cubic Inches PN 92500011 184995 from Harley-Davidson Genuine Motor Accessories produces the maximum horsepower output for a. Expect to feel exceptional acceleration delivering significant gains and up to a 50 increase in the higher RPM range. It isnt until 4500 RPM that the Stage 4 really comes to life pouring the power on until it redlines at 6500rpm.

So to recap a stock 2016 Harley-Davidson bagger is putting out roughly 76 hp and 956 ft-lbs of torque. All of the gaines are in the upper end of the powerband. A stage one kit is basic air intake and exhaust all the way up to stage 4 which will be a large project such as air intake exhaust larger pistons cam and more.

We start with the increased diameter cylinder and high compression pistons as the Stage 3 upgrade kit. Highest level performance upgrade available to provide a maximum increase in displacement compression and flow. Tuners carburetor and fuel injection NOS Superchargers Turbos Big Bore and more.

For the highest power upgrade available well address the top end of your Harleys engine. Along with larger throttle body and injectors you will be needing more headwork than what you have done in stage 3. Make more power than the Stage 4 up to 4000 rpm.

And for the sake of comparison and to better explain our menu of upgrade options and power gains expected it is worth noting that the most popular engine in the. It comes with the cnc ported factory heads with larger valves and bee hive springs and they flow much better than stock. If you are a power addict this stage is for you.