| Diagram | Fig. 1 — CYLINDER AND CRANKSHAFT · ref 14 |
| Subsystem | engine bottom |
| Listed in parts books | 1968–1971 |
ROCKER ARM EX. TR25
Exhaust rocker arm listed for the TR25, part number 70-7791.
This is the exhaust rocker arm listed for the TR25 in our records, part number 70-7791. A rocker arm sits up in the cylinder head, pivoting on a shaft to transfer motion from the pushrod down to the valve it operates - in this case the exhaust side. We don't have much depth in our own catalog notes for this one beyond the TR25 exhaust listing.
Read more
The TR25 designation on this part is a bit outside the usual unit and pre-unit Triumph twin range we deal with most, and the entry here is brief. If you're sourcing this for a rocker gear rebuild, give us a call so we can confirm it's the right one before it goes in the mail.
We'd rather talk it through with you than have you guess off a part number alone, especially on a valve gear component where a mismatch means metal hitting metal it shouldn't.
Sorry if we got something wrong here. If you think this information isn't correct, .