| Diagram | Fig. 16 — SWINGING FORK, SUSPENSION UNITS AND CHAINGUARD · ref 10 |
| Subsystem | suspension rear |
| Listed in parts books | 1970–1974 |
| Also fits (as replacement) | 1969–1970, 1976–1978 · for 99-0122 |
Bonded bush (99-0122)
Bonded rubber bush for the rear suspension unit mounting on the swinging arm, PN 64533645 (formerly 99-0122).
This is the bonded rubber bush used at the suspension unit mountings on the swinging arm, part number 64533645, which carries forward from the earlier factory number 99-0122. It shows up across the swinging fork and suspension unit figures in the parts books, which tells us it's part of the hardware that lets the rear suspension units pivot at their eyes.
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A bonded bush is a rubber sleeve molded to an inner (and sometimes outer) metal shell, so it takes up the pivoting motion at the shock mount without metal-to-metal wear. These bushes see a lot of flex over the years and are worth checking any time you're in there for shock replacement or swinging arm work.
The catalog record ties this to swinging arm and suspension unit assemblies across appearances from 1970 to 1974, but doesn't spell out an exact model or year fitment beyond that, so confirm against your own parts book or give us a call before ordering.
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