Let’s Talk Valve Guides – A Hidden but Critical Failure Point in Polaris PRO-STAR Engines
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Let’s Talk Valve Guides – A Hidden but Critical Failure Point in Polaris PRO-STAR Engines

At REV6, we’ve rebuilt thousands of Polaris PRO-STAR engines—from the 570cc all the way to the 1000cc—and one of the most common issues we encounter isn’t just worn pistons, bad rings, or scored [...]

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