FXR

The Evolution of performance

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The brains behind the fxr

rigid by design, rebellious by nature

the frame that broke the mould

Designed by Erik Buell, the lead performance engineer focusing on balance and cornering stability, It's key features were:

A welded tubular steel frame designed with computer-aided geometry

Frame triangulated around the swingarm pivot and steering neck for torsional rigidity.

The transmission and engine mounted together as a single unit, reducing flex under load.

The clang of a shovel

Before the signature Evolution engine came the Shovelhead, a raw mechanical heartbeat that defined Harley's grit through the '70s and early '80s.

It wasn't refined, but it was real, heavy, loud, and full of character. In the early FXR, the Shovelhead's familiar 1340cc rumble met a new kind of frame engineering, marking a turning point between tradition and transformation.

Shovelhead Engine
Shovel head
1966 - 1984
Displacement - 80 Ci
45° air-cooled v-twin
60-65bhp

The sound of evolution

Then came the Evolution, Harley's clean break from the oil stained legacy of the Shovelhead. Lighter, cooler, and far more reliable, the 1340cc Evo traded cast iron for aluminium, leaks for longevity, and vibration for balance.

It didn't just power the FXR; it proved Harley could evolve without losing its soul. Becoming smoother, stronger, and built to last.

Evolution Engine
Evolution
1984 - 1999
Displacement - 80 Ci
45° air-cooled v-twin
70-76bhp
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