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Billet Manual Cam Chain Tensioner For Honda CRF250R 300R 450R 450X CBR300R Note: We have red/black/silver color, please leavse a message for what color you order. If you don't remark, we will pack the red one. Description: --This manual cam chain tensioner is designed to replace the automatic and hydraulic tensioners on high performance engines. --The automatic adjusters can back out when the throttle is closed suddenly at high RPM. --This allows the cams to go momentarily out of time, and can r...

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