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20" S-Cam Length

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This category gathers Extreme HD Parts built around the 20-7/16″ s-cam. It includes complete s-cam bushing kits in standard and oversized bores plus s-cam-only replacement camshafts, all offered in left-hand and right-hand rotation. These heavy-duty trailer brake components suit shops servicing or rebuilding 20″ s-cam brake assemblies.