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Automatic Compression Release
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H-D&reg Jewelry

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Automatic Compression Release

Automatic Compression Release

Genuine Harley® Part
Automatic Compression Release
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Automatic Compression Release (ACR) valves reduce the strain of starting your high performance motor by reducing cylinder compression - automatically! The engine is easier to turn over resulting in less wear on your starter and battery. After start, the ACR valves close to restore full compression. ACR give you peace of mind and protects your investment. ACR can be installed on stock or Screamin' Eagle® Performance cylinder heads for all '07-later Twin Cam equipped models. Install requires machining to be performed by a competent machinisht using the Screamin' Eagle® Automatic Compression Release Fixture Kit P/N 94648-08 (sold separately). Installation requires separate purchase of model specific ACR Wiring Harness.
Fits '07-later Twin Cam equipped models. Can be used with Original Equipment or Screamin' Eagle® Cylinder Heads. (each)
Superceded from: 28861-07
Country of origin: U.S.A.
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