| Also known as | 10724 |
| Listed in parts books | Not catalogued by year yet |
PRIMARY CHAIN A65 JAPAN 80L TRIPLEX
An 80-link triplex primary chain listed for the BSA A65, made in Japan, PN 19-8639J.
This is a primary chain listed for the A65, an 80-link triplex chain made in Japan. Given the description names the A65, this is a BSA part, not a Triumph one - worth flagging since it's filed here under a Triumph-style part number, 19-8639J, with an old-stock cross number of 10724 in our records.
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A triplex primary chain runs three rows side by side inside the primary chaincase, carrying drive from the engine sprocket back to the clutch. Beyond that, our catalog entry on this one is brief.
If you're sourcing this for an A65, give us a call and we'll confirm the chain matches what your primary case and sprockets need before you order.
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