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Triumph 500 650 750 Auto Advance Springs bonneville


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This pair of springs are to suit just about all "automatic advance" ignition units fitted to unit British singles, twins and triples of the '60s and '70s.  Original Lucas part number is 54417992.  These springs are tested for tension, and are "heavy duty" , in that they're wound a bit stiffer than the 54412229/54415642 springs that preceded them.  All a/a springs supercede to these.

What this means is that if you're still running a non-electronic ignition, these springs should make your engine start easier, idle better and run smoother below 3000rpm.  Sound good?  Can't go wrong for ten bucks....

  • Model: aaspringstri

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Eurotrash Jambalaya specializes in hard-to-find parts and unobtainium for vintage British and European motorcycles of the ˜60s, ˜70s and ˜80s, particularly Ducati, Moto Guzzi, Norton, Triumph and BSA. Risen from the ashes of Britalia Motors San Jose, our dealership begun in 1981, the Eurotrash Jambalaya brings nearly 30 years of experience in the business of vintage European motorcycles.

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