Hopefully an easy question for someone here!
I need replacement rings for my Simson S50. Standard bore is 40mm, but mine measures as 40.5mm, which I believe is the second oversize. The rings which came off both measure as 41.5mm (outer diameter).
When looking for new ones online, do I search for 40.5mm (the compressed size) or 41.5mm (the expanded size)?
Also, any thoughts on the best (cheapest!) company to buy from, other than ebay?