| Also known as | T4121 |
| Diagram | Fig. 5 — CLUTCH AND PRIMARY CHAINCASE · ref 31 |
| Subsystem | primary |
| Listed in parts books | 1971 |
CUP-CLUTCH SPRING 1.062DP
A clutch spring cup, catalog number 57-4121, now superseded by 57-3951.
This is a clutch spring cup, part number 57-4121, listed in the catalog as 1.062DP. The cup seats one of the clutch springs and keeps it aligned and located against the pressure plate as the clutch is loaded up.
Read more
Our records don't give us more detail beyond that catalog line, and it's not tied to a specific model in the paperwork we have on hand. Triumph later renumbered this part to 57-3951, so if you're cross-referencing an older parts book and come up with 57-4121, that's the same physical piece under the current number.
Given how small and inexpensive a part this is, it's worth having on hand when you're doing clutch work rather than trying to track one down mid-job. Call the shop and we'll confirm fitment before you order if you're not sure it matches what's on your bench.
Sorry if we got something wrong here. If you think this information isn't correct, .