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The COMP Cams XR258HR‑10 is an Xtreme Energy hydraulic roller cam for Chevy small‑block applications that delivers strong torque, improved mileage and a smooth idle in street carbureted setups. Xtreme Energy profiles increase responsiveness and area under the lift curve for better torque and vacuum; these cams work best with COMP roller rockers and matched valve springs and usually require supporting intake and exhaust upgrades.
COMP Cams Camshaft CS XR258HR-10
