| Also known as | 04.0418 |
| Diagram | Fig. 5 — Gearbox: Shell, Gear Cluster, Mounting Bolts, Adjuster and Countershaft Sprockets · ref 13 |
| Subsystem | gearbox |
| Listed in parts books | 1971–1973 |
Norton GEAR M/S 2ND PRE 74
Pre-1974 mainshaft second gear for the gearbox cluster, 18 tooth.
This is a mainshaft second gear for the gearbox, listed in the catalog as GEAR M/S 2ND PRE 74. It sits inside the gearbox shell along with the rest of the cluster, mounted on the mainshaft where it's part of the gear-change assembly covered under the Gearbox: Shell, Gear Cluster, Mounting Bolts, Adjuster and Countershaft Sprockets figure. The tooth count shows up as 18T in some catalog listings, and the part is tied to pre-1974 gearbox specification, which matches the "PRE 74" note in the description.
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The manufacturer tag on this one says Norton, and nothing in the description or figure title points to Triumph at all, so treat this as a Norton gearbox part. Catalog appearances run from 1971 to 1973, which lines up with the pre-'74 designation on the part itself.
If you're rebuilding a gearbox and need to match this against what's already in the case, check the tooth count and the pre-'74 spec against your own parts book before ordering, since gearbox internals changed over the years and mixing generations of gears inside one cluster is asking for trouble.
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