What Is Harley Davidson Stage 4

The Harley Stage 4 upgrade consists of ported heads and a high performance carburetor or throttle body.

What is harley davidson stage 4. When installed by an authorized Harley-Davidson Dealer within 60 days of the vehicle purchase compliant kits do not impact the vehicles limited warranty. Along with larger throttle body and injectors you will be needing more headwork than what you have done in stage 3. A Stage 4 on the stock 103 platform will gain you 103 hp with 110ft-lbs of torque and the Bolt on 110Ci cylinders with stage 1 gets you 105 hp pretty respectable for a stock freedom machine with new jugs and stock heads.

That is the Stage 4 upgrade. Youll be maxing out displacement compression and flow allow you to experience the highest level of Harley-Davidson freedom with the best H-D performance upgrade available. It isnt until 4500 RPM that the Stage 4 really comes to life pouring the power on until it redlines at 6500rpm.

Other awesome aftermarket comparable stage kit. So before you opt for one of our legendary Stage 1 2 or 3 Full House Harley upgrades be sure you know what it is you want when it comes to the performance of your Harley-Davidson. Power levels can be 50-60 or much more over stock.

HOW MUCH DOES IT COST. If you want to go to stage 4 might as well go straight to it more cost effective. Stage 4 bikes are pretty rare on the roads because such upgrades give you huge power but your bike will lose the rideability.

A Stage 4 Upgrade is ideal for riders who want the absolute best performance upgrade available. Youll feel the difference as soon as you twist the throttle. Stop by and see the service dept for all your performance needs.

Its designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. Tuners carburetor and fuel injection NOS Superchargers Turbos Big Bore and more. To start with The stage 4 kit does not come with the compressor heads.