Hannigan/Goldwing suspension preload?

I'm doing research on different trike kits for the Gen I GL1800 and have read a lot of great comments on the Hannigan. Plus my brother has one and recommends it. On some of the other manufacturers they detail how they adjust the rear suspension preload, but I didn't seen any discussion on the Hannigan site. Does it use the stock hydraulic preload adjuster off the Wing, or is it a manual adjustment? Thanks.

On my RSV/Hannigan it's a manual adjustment. I' can't speak to the GW.

But the folks at Hannigan are always very happy to help. 270-753-4256

Their customer service is second to none.

When I replaced wheel bearings I called with a question and they gave me detailed instructions and called me back to see how I did.