Harley Davidson Evolution Upgrades

In the Big Twin models the Evolution engine was offered only in the 82ci size.

Harley davidson evolution upgrades. We achieved 954 horsepower at the rear wheels using un-ported Harley-Davidson 1340 heads and increasing the compression with domed pistons. 70 to 120 HP 2000 Stage Three Evolution Harley-Davidson engines involve any change to any component in the engine. Contrary to what many performance shops try to tell you we were able to break the 90 horsepower mark without larger valves porting and polishing the Evolution heads.

A Stage 1 upgrade is the most common. Owning a Harley is really about making your bike into an extension of yourself. After all a large part of the companys downfall in the 70s had been due to outdated engine designs.

Well we took some time and did in fact put our heads together and under much scrutiny of our editors we have listed a countdown to performance nirvana and in what order in which to do so. We chose upgrading the chassis suspension and braking first over just simply adding gobs of horsepower. RayWheeler has many years of experience with our 124 engine upgrades on the street and at Bonneville.

Wheel of a late model 80 CID Harley-Davidson big twin Evolution engine. A Harley Davidson Stage 1 horsepower increase involves getting more air and fuel through the motor without modifying the engine itself. Proven Performance For The Powersports Industry My Account.

This displacement provided more than enough power and torque for HDs bigger bikes. Update your navigation system to the freshest map of another. 1340 FORGED PISTONS - 1051 010.

A Harley Stage 1 upgrade involves upgrading your bikes air cleaner slip-on exhaust and fuel tuning to allow your motor to breathe more freely. Full skirt CP pistons w 3mm oil ring. First you chose the one you fell in love with then you started finding ways to make it even better.