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The COMP Cams XFI Xtreme Energy-R XEr281HR cam uses XE-R lobe designs tailored for standard-displacement LS1 and LS6 engines. It delivers the Xtreme Energy-R performance profile for builds that keep displacement near stock. The overview suggests this cam suits enthusiasts running naturally aspirated LS1/LS6 setups who will address tuning and supporting modifications to realize the XE-R characteristics.
COMP Cams Camshaft LS1 XEr281HR-12
