| Diagram | Fig. 4 — CRANKSHAFT · ref 2 |
| Subsystem | engine bottom |
| Listed in parts books | 1970–1972 |
BSA Connecting rod complete, less big-end shell (left-hand)
Left-hand connecting rod, complete less big-end shell, for the crankshaft/piston assembly on the BSA A65 engine.
This is a connecting rod, complete but supplied less the big-end shell, for the left-hand cylinder position. The catalog places it in the crankshaft and pistons area of the engine, where the rod links the piston to the crankpin and transmits combustion force into rotating motion at the crank.
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The listing specifically calls out left-hand, so if you're rebuilding a bottom end make sure you're matching this to the correct cylinder and not mixing it up with the right-hand rod. Since it comes less the big-end shell, you'll need to source that separately to complete the assembly.
The catalog record for this one shows it under the BSA line rather than Triumph, so if you're working on a Triumph twin, confirm this is the right part before you order. Our records show it appearing across catalog listings from 1970 into 1972, but call the shop if you want us to confirm exact fitment for your engine.
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