fsc600 vs fjs600 rear shocks

Are the FSC600 and FJS600 shocks interchangeable? I have a FSC600 2002 and want to replace the rear shocks. This is on a silverwing attached to a reverse trike. My understanding is there are minor mostly cosmetic differences between the North American and Eu versions. I am looking at the YSS ecoline shocks. I also read on this forum that there was an older YSS version that had firmer springs. I would prefer that due to the extra weight of the trike but don't know what part number that was.

Hi terryweasely.

It's my understanding that regardless of the Pre-fix all 600 Silverwings are the same under the skin.
Meaning that all parts are interchangeable.
With that said, it's been my experience with rear shocks, OEM, YSS, and Hagons, having tried all, that the Hagons spring rate is by far the stiffest, even set on normal as supplied.
My only other thought is whether they are available state side.

Hope this is of help to you.

They are available, but very pricey. There is a hagon distributor on the west coast that I had made contact with previously.
Thanks

You mention a reverse trike…do you mean 2 wheels up front? I’d love to see a picture of that.

Photo of the Reverse trike w/SW600 in the back attached

Got it. Thank you! That’s almost like a T-Rex or Slingshot configuration.

Kandi Corp out of China made it in 2012-2013. Kandi Viper 250 MD. Engines were junk and front end was never setup for proper handling at high speed. Slowly ironing out the kinks. I did not do any of the initial conversion, Silverwing was already in place. Wiring has been a nightmare! Finally got the parking brake indicator to go off (had to start cutting wires at the cluster, wiring diagram didn't seem to be correct for the parking brake indicator) and now I have a functioning odometer. Front brakes were seized, all 4 pistons had to find something to replace the calipers and rebuilt the SW caliper while I was at it. It scoots right along, cruising at 55. Still working on the front end, very twitchy. Had it in good shape until I put new front shocks (made several mods at the same time, but I think the shock setup is my issue now) have to get the SAG setup.