| Diagram | Fig. 21 — FRONT WHEEL · ref 16 |
| Subsystem | wheels |
| Listed in parts books | 1974, 1976–1980, 1983 |
FRONT AXLE DISC BRAKE TRIUMPH
Front wheel axle spindle for Triumph disc-brake front ends, also known by its older part number W4132.
37-4132 is the front wheel axle used on Triumph models fitted with a front disc brake. It's the spindle that passes through the front hub and fork legs, carrying the wheel and letting it spin freely while the fork sliders and disc caliper stay fixed. Catalog listings place it on disc-brake front ends across the late '70s.
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Alias W4132 turns up in older parts book references for the same physical axle, so if you're working from an early book and see that number, you're looking at this part. Because this axle is for disc-brake front wheels only, it's not the right part for a drum-brake front end - check your parts book or the wheel itself before ordering to make sure you've got a disc-brake front hub.
We carry this as a stock replacement item. It's a straightforward swap for anyone comfortable pulling a front wheel, but confirm your specific front end setup first since axle length and thread details vary across the disc-brake and drum-brake front ends Triumph ran during this era.
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