| Also known as | D444 |
| Diagram | Fig. 11 — CHAINCASE AND CHAINS · ref 3 |
| Subsystem | primary |
| Listed in parts books | 1964–1970, 1974 |
Rear chain, 102L
Rear drive chain, 102 links, also listed under the older D444 part number.
This is the rear drive chain, listed in the catalog as 102 links long. It carries power from the gearbox sprocket back to the rear wheel sprocket, so it lives outside the primary chaincase, running along the right side of the bike under its own chainguard. The older parts books list this same chain under the D444 number, which you'll still see stamped in some earlier reference material.
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This part shows up across a run of catalog years from the mid-60s into the mid-70s under the CHAINCASE AND CHAINS figure, so it's a long-running listing rather than a one-year item. Because rear chains come in different pitches and link counts depending on the model and final drive setup, it's worth double-checking the link count and chain size against what's currently on the bike before you order.
If you're replacing a worn or stretched chain, it's a good idea to check your sprockets at the same time - a new chain running on worn sprocket teeth will wear out fast.
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