Rebuilding the Triumph Bonneville: Rings Gaps Part 2

A close-up photo of a metal mechanical part with a large central bore and several bolt holes around its circumference. The inner wall of the bore has the word 'top' engraved near the bottom edge, suggesting it's a directional indicator. The part appears to be made of machined steel or cast iron, with visible machining marks and a slightly worn surface. The background is out of focus, showing a workbench environment with a hint of yellow.

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