| Diagram | Fig. 9 — CLUTCH AND PRIMARY CHAINCASE · ref 17 |
| Subsystem | primary |
| Listed in parts books | 1969–1972 |
BSA Cup — clutch spring
A clutch spring cup (68-3287) that seats the clutch springs inside the primary chaincase.
This is a clutch spring cup, part number 68-3287, the small cupped seat that sits under each clutch spring inside the primary chaincase. Its job is simple — it gives the spring a proper seat to push against so clutch pressure stays even across the plates. You'll find it referenced in the clutch and primary chaincase sections of the parts books, appearing in catalog entries spanning 1969 through 1972.
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Our record doesn't pin this to a specific model or engine family, so if you're matching it up to a particular clutch assembly, check the diameter and depth against what's already in your primary case before you order. Call the shop and we can help confirm fitment.
These cups are small and easy to lose track of when a clutch is apart on the bench, so it's worth having the full set on hand before reassembly rather than discovering one's missing halfway through.
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