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Pre-1984 Honda CR250 CylinderThe CR250 went water cooled in 1981 and pre 1984 models have a steel bore surface and no exhaust valve system. The post 1984 models have the ATAC exhaust system, and 1986 models onwards have different versions of an HHP exhaust powervalve system and a Nikasil plated bore. A very basic 250cc cylinder that needs no extra systems to operate exhaust valves or any other nwere technology |
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Bottom View
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Right Side View
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