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Dish Top
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A Dish Top style piston will effectively lower your engine's compression ratio by removing material from the top of the piston in a circular, "dish" shape. They are primarily used in boosted (supercharged, turbocharged) applications where low to medium compression ratios are desired.
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Reverse Dome
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Similar to a dish piston, the goal of a Reverse Dome piston is to lower the compression ratio of your engine, making them great for boosted (supercharged, turbocharged) applications. They are designed in such a way as to match the profile and shape of most standard and aftermarket cylinder heads.
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Flat Top
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Flat top pistons are very similar in nature to stock pistons, running at medium compression ratios. Consequently, they work great in many applications and performance levels. Valve reliefs are designed with appropriate clearance to fit most types of standard and aftermarket heads.
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Solid Dome
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A Solid Dome top piston will effectively raise an engine's compression ratio, making them the ideal type of piston for medium to higher performance engines that may be using power adders (such as nitrous). Dome Top pistons range from medium to high compression ratios.
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Hollow Dome
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Hollow Dome pistons are designed specifically for applications where race fuel and nitrous are the norm. They are typically used to make motors with high compression ratios and high performance combinations only.
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Dome Top (Dart Sportsman 49cc Head)
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A Dome Top piston will effectively raise an engine's compression ratio, making them the ideal type of piston for medium to higher performance engines that may be using power adders (such as nitrous). Dome Top pistons range from medium to high compression ratios.
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