| Diagram | Fig. 15 — SWINGING ARM — CENTRE STAND — REAR BRAKE CONTROL · ref 39 |
| Subsystem | suspension rear |
| Listed in parts books | 1971–1972 |
BSA Spring — suspension unit (Girling 64545350)
Rear shock (suspension unit) spring, Girling 64545350, listed in the swinging arm and rear brake control section of the parts book.
This is the spring that fits over the rear suspension unit (shock body) on the Girling-equipped rear end, part number 19-7469, cross-referenced to Girling's own number 64545350. It shows up in the parts book under the SWINGING ARM — CENTRE STAND — REAR BRAKE CONTROL figure, so it's grouped with the rear suspension and brake linkage hardware rather than listed as its own separate item.
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A rear shock spring like this one wraps around the damper unit and provides the actual springing action while the damper controls the rate of compression and rebound. If yours has sagged, sacked out, or lost its tension compared to the other side, that's usually what sends people looking for a replacement.
Our catalog record ties this one to appearances in 1971 and 1972, but it doesn't spell out which specific model those catalog entries cover. Check it against what's currently on your bike, or give the shop a call and we'll help confirm fitment before you order.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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