| Diagram | Fig. 10 — Inner and Outer Chaincase, Hydraulic Tensioner · ref 23 |
| Subsystem | primary |
| Listed in parts books | 1975 |
Norton Steady, Chaincase
A chaincase steady from the Norton Commando primary/chaincase assembly, PN 06-6257.
This is a Norton part, not Triumph — the number is a Norton Commando reference, and the figure titles (Inner and Outer Chaincase, Hydraulic Tensioner) confirm it lives in the primary chaincase area of a Commando-family machine.
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The part is described as a steady for the chaincase, meaning it helps hold the inner and outer chaincase halves in fixed relation to each other, keeping the assembly rigid where the primary chain and hydraulic tensioner live. Beyond that, our catalog record on this one is brief.
We only have this part tied to a single catalog appearance from 1975, so we can't speak to broader fitment across other Commando years or variants. Call the shop and we'll confirm fitment before you order.
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