Triumph 500 650 Pre-Unit Rear Brake Light Switch Lucas 6SA Type Sparx PN# 31688


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SKU: 633726151734 Categories: , , , Tag: Brands:


New production Lucas 31688 6SA type rear brake switch from Sparx! As close to original as possible for 1957-63 Triumph 350 500 3TA 5TA twins, can also be used on Triumph 650 twins of that era and, with enough ingenuity, just about any rear drum brake setup! Direct replacement for Lucas part number 31688, also can be used in place of 34381 & 34279 (though we stock more direct replacements for them, see recommended links). Includes rubber boot / cover.

Yes, there are cheaper India produced versions available, but you get what you pay for!

We’ve been told these were also stock for many Royal Enfield motorcycles, check your parts book for fitment!


Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us.

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