7075-T6 aluminum, hard anodized finish with PowerGlide ramps/pins for optimized shifting performance (newer black rings can be used to replace older tungsten grey rings of same BCD and arm/spider profile).

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7075-T6 aluminum, hard anodized finish with PowerGlide ramps/pins for optimized shifting performance (newer black rings can be used to replace older tungsten grey rings of same BCD and arm/spider profile).

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