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S&S Cycle Power Tune XTO Muffler Insert Caps

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S&S Cycle offers insert caps for Power Tune XTO mufflers. They block off one outlet for more tuneability options. Built from 304 stainless steel and easy to install, the insert caps allow for power and torque tuning, as well as tone and sound adjustment.

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S&S Cycle Power Tune XTO Muffler Insert Caps 550-1667

S&S Cycle 1.75in Power Tune XTO Muffler Insert Cap

Part Number: SSY-550-1667

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Estimated Ship Date: Dec 10, 2026 if ordered today

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Estimated Ship Date: Dec 10, 2026 if ordered today

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