Buying a spare Final Drive

[Hottech]

I have the opportunity to purchase a low mileage final drive. Should I invest in the extra part and if so how would one store it so that the seals would not dry out?

[boxermania]

There are several ways available, hoeever, the easiest would be to partially fill the FD with lubricant, seal it in a clear bag, laying on it's side with the wheel hub pointing up and preferably indoors. There will be a vapor space (oli) above the liquid that will keep everything exposed to an oily atmosphere.

There are other industrial products, used on large rotating equipment such as gearboxes, compressors and turbines to provide a lubricating vapor and are miscible with the oil, but the above is much simpler.

[The Velvet Monkey]

I had an opportunity to pick one up a while back on the cheap and didn't take it.

Regretting it now--not a that I currently have any FD issues, but since I plan to keep the bike until my dying day, it may come in handy evenutally.

With my luck, though, it would have been a drive with an issue.