Different rear foot peg arrangement, 900 Hornet.
Discussion
I've had a 2005 900 Hornet for about 2 months, and removed the rear foot peg protection plates for a spruce up.
It was only then that I noticed the rear foot peg securing arrangements are different. I checked with second hand spare parts, and complete bikers too, so I'm satisfied it's not some kind of bodge repair!
Both pins are secured underneath like this:
The right hand side is like this from above:
But the left hand side not only has a shim within but a different top system:
It's a bit strange.
If it's to beef up the left hand side for pillion passengers getting on and off, why not do both sides? Perhaps it was only on the later bikes? The rear plates with loops are different too, and one has a recess machined out of it, which isn't visible when fitted, but saves about 25g. 
The tie down / luggage (?) loops being different on each side has also been confirmed with spares out there for sale. It makes my teeth itch a bit that the bike is no longer quite so symmetrical, now that I know.
It was only then that I noticed the rear foot peg securing arrangements are different. I checked with second hand spare parts, and complete bikers too, so I'm satisfied it's not some kind of bodge repair!
Both pins are secured underneath like this:
The right hand side is like this from above:
But the left hand side not only has a shim within but a different top system:
It's a bit strange.
If it's to beef up the left hand side for pillion passengers getting on and off, why not do both sides? Perhaps it was only on the later bikes? The rear plates with loops are different too, and one has a recess machined out of it, which isn't visible when fitted, but saves about 25g. The tie down / luggage (?) loops being different on each side has also been confirmed with spares out there for sale. It makes my teeth itch a bit that the bike is no longer quite so symmetrical, now that I know.
That hadn't occurred to me! Since the pin is held in by a split pin, that really shouldn't happen. The added shim to make the left foot peg a tighter fit may be because of vibration etc.
You'll see it here too on a spare part for sale:
https://www.ebay.co.uk/itm/205244595220
The bike only has a side stand, USA models (called the 919 due to Chrysler owning the Hornet name) had a centre stand I believe. So almost every pillion would put their full weight on the left one getting on?
Since the pin is held in by a split pin, that really shouldn't happen. The added shim to make the left foot peg a tighter fit may be because of vibration etc. You'll see it here too on a spare part for sale:
https://www.ebay.co.uk/itm/205244595220
The bike only has a side stand, USA models (called the 919 due to Chrysler owning the Hornet name) had a centre stand I believe. So almost every pillion would put their full weight on the left one getting on?
I don't think the main stand was a factory fitment on all US market 919s as a lot on the Facebook group rattle on about getting them (doesn't look like using a paddock stand occurs to Americans, but then reading their posts I'm not convinced maintenance does either......).
The part diagrams on CSMNL are exactly the same for UK and US markets, so as you say it stays on the left. The part names give no clues! That's why I think it has to be something to do with the bike set up, which I guess is the chain. Maybe it is supposed to reduce vibration (until it falls out)?
To add mystery, the 600 doesn't have it even though a very similar set up for the pillion pegs.
The part diagrams on CSMNL are exactly the same for UK and US markets, so as you say it stays on the left. The part names give no clues! That's why I think it has to be something to do with the bike set up, which I guess is the chain. Maybe it is supposed to reduce vibration (until it falls out)?
To add mystery, the 600 doesn't have it even though a very similar set up for the pillion pegs.
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