What Is Harley Davidson Stage 4

A Stage 4 Upgrade is ideal for riders who want the absolute best performance upgrade available.

What is harley davidson stage 4. If you are a power addict this stage is for you. This would be a moderate compression big bore combination. Highest level performance upgrade available to provide a maximum increase in displacement compression and flow.

Other awesome aftermarket comparable stage kit. Stage 4 bikes are pretty rare on the roads because such upgrades give you huge power but your bike will lose the rideability. All of the gaines are in the upper end of the powerband.

The Harley Stage 4 upgrade consists of ported heads and a high performance carburetor or throttle body. However what might make a good stage 2 cam might be a little weak for a stage 4 engine and what might be a good cam for a stage 4 engine might be overkill for a stage 2 you know what I mean. This stage IV comes with 110heads 260 cams 58mm throttle body injectors it realy moves but low end below 3000 rpms is alittle sluggish but once you get going all I can say is hang on.

A Stage 4 Upgrade costs 3650 on a Milwaukee Eight Engine. Ideal for riders who want the absolute best performance upgrade available. It comes with forged high compression pistons.

To start with The stage 4 kit does not come with the compressor heads. Expect to feel exceptional acceleration delivering significant gains and up to a 50 increase in the higher RPM range. 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.

Stage 4 Harley-Davidson Upgrade. Harley Stage 4. Along with larger throttle body and injectors you will be needing more headwork than what you have done in stage 3.