| Diagram | Fig. 2 — CYLINDER BARREL, EXHAUST PIPES, VALVES · ref 18 |
| Subsystem | engine top |
| Listed in parts books | 1969–1970 |
BSA Exhaust pipe (left-hand)
Left-hand exhaust head pipe, BSA part 68-2789, from the cylinder barrel/exhaust/valves section of the parts book.
This is the left-hand exhaust pipe listed under BSA part number 68-2789. The catalog places it in the CYLINDER BARREL, EXHAUST PIPES, VALVES section, so it mounts to the head and runs forward from the left exhaust port on down to wherever the balance pipe or silencer connects.
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The manufacturer tag on this one says BSA, and the catalog title matches that: this is a BSA part, not a Triumph part, despite living in a shared numbering system some folks confuse across marques. Our records show it appearing across catalog rows dated 1969-1970, but we don't have a specific model spelled out beyond that in our own listing.
If you're chasing a left-side head pipe for an A50 or A65-family twin, this number is worth checking against your parts book, but confirm the exact application with us before you order since our own catalog entry is brief.
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