| Diagram | Fig. 19 — Handlebars, Disc Brake Master Cylinder and Hose Group · ref 26 |
| Subsystem | engine top |
| Listed in parts books | 1971–1973 |
Norton FRNT BRAKE HOSE 31IN
A 31-inch front brake hose for the hydraulic disc brake setup, running from the master cylinder down to the front caliper.
This is a front brake hose, listed in the catalog at 31 inches, and it shows up in the parts book under the Disc Brake Master Cylinder and Hose Group as well as in the Handlebars figure. That figure pairing tells you this line runs from up at the bars down to the front brake, feeding the hydraulic disc setup rather than an old cable-drum arrangement.
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The catalog record ties this part to entries spanning 1971 to 1973, though it doesn't spell out a specific model. If you're chasing this part number, confirm it matches your master cylinder and caliper fitment before you order, since hose routing and end fittings can vary between setups even when the length is close.
Given how central this line is to stopping power up front, it's worth a careful look for cracking, swelling, or soft spots before you put it back into service, and it's not something to guess on if you're not sure it's the right length or fitting for your setup.
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