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They do offer better performance than the stock calipers but if you are going to buy new calipers get a 6 piston for the front. The cost difference is minimal.
The number of pistons really doesn't matter very much. What matters more is the total area of the pistons in the caliper, versus the area (diameter) of the master cylinder. Hydraulic "leverage".
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Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
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Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
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Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
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