| Listed in parts books | Not catalogued by year yet |
BRAKE RTN SPRING SP/HUB
Brake return spring for the sprocket-side drum hub on Triumph twins, part number 37-0123.
37-0123 is a brake return spring for a drum brake hub, the kind of spring that pulls the brake shoes back off the drum once you let off the pedal or lever. Catalog listings tie it to the sprocket-side hub area on Triumph twins, where it works alongside the brake arm and cam to keep the shoes centered and free of drag when the brake isn't applied.
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It's a small part but not one you want dragging on you unnoticed - a weak or broken return spring can leave a shoe partly engaged, which shows up as heat, wear, and a bike that doesn't want to coast free. Worth keeping a spare on hand since it's an easy swap when you've got the hub apart anyway.
We don't have a lot of extra detail on file for this one beyond the basic listing, so if you're not sure it matches what's on your bike, give us a call and we'll sort out fitment before you order.
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