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Speed Pro has a hyper piston with a flat top 2 valve relief, with teflon coated skirts all over Ebay for around $170, I think dirt track thunder carries them also. Thing is, be careful of what kind of pistons you get, if you buy the common cast "rebuilder" pistons, it`ll have .020 off the compression height, then when at top dead center, the piston will be .045 in the hole, this pistons kill compression, quench, and power.
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