Cover for Back of RA Axis for 900GTO Mounts shipped since October 2005 (M9403)

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This sight hole cover threads onto the back of all 900GTO mounts shipped since October 2005.

The rear of the 900GTO R.A. axis was redesigned in October 2005 to be slightly larger than the 1200s, 400s and earlier versions of 900s. This change resulted in the need for a larger diameter cover.

If you are uncertain when your 900GTO shipped, please use the photos (right) as a reference for where to measure on your mount to determine the correct cover size. We used a 1200GTO since it was readily available; however, the measurement points are identical on older 900 mounts.