| Diagram | Fig. 25 — Handlebars, Front Brake Master Cylinder and Hose Group · ref 7 |
| Subsystem | engine top |
| Listed in parts books | 1975 |
Norton Master Cylinder Assembly
Front brake master cylinder assembly for the hydraulic disc brake setup, listed in 1975 catalog records.
06-5742 is a front brake master cylinder assembly, listed under the Handlebars and Front Brake Master Cylinder and Hose Group in the parts book. This is the unit that lives up on the bars where the front brake lever pulls on it, pushing hydraulic fluid down the line to work the front disc.
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The catalog record ties this one to 1975 appearances only, so treat that as the extent of what we know for certain about which machine it was fitted to. Given the figure grouping and the hydraulic front brake setup, this is a disc-brake-era part rather than something for an earlier drum front end.
If you're matching this up against a bike, check the physical casting and any numbers stamped on the body against your parts book before ordering, since master cylinder assemblies vary by year and application even within the same basic family.
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