Bohica88 wrote on 08/26/24 at 19:48:31:Is it needed to shorten the forks or use different forks for the cafe/ scrambler builds? Or does the stock fork geometry work for these builds. I've read over almost all the builds and haven't really understood what was done to the front end. I'm thinking about doing a build like this and right now going with different handle bars and tank. And modifying the seat area
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It's your bike and you can build it however you like.
The only rule here is that the fork lowers must NOT hit the lower triple clamp with the fork springs removed. 
RYCA used longer shocks (13" vs 10.5") and shortened the forks by 2 inches. Many of the cafe builds did the same or similar. I kept the stock shocks and shortened the forks. Others have the stock forks with longer shocks. It just depends on what you are trying to accomplish with looks and performance.
There are three ways to lower the forks. RYCA used a 2" spacer to reduce the travel of the fork. This will lower the front while keeping the stock handlebar clearance, but you lose 2" of fork travel. This is probably the most common method. I did this but I wasn't happy with the reduced travel and later moved on to a different method.
The second method is to purchase an
aftermarket clamp or modified top clamp ( like Dave's) that will allow you slide the tubes up to lower the front end. This method retains full travel and is adjustable. It perfect if you plan to use
clip-on bars but can interfere with some standard bars. (DC Motive is operated by a forum member
SpamyToo.)
Or you can have the tubes cut down and new threads cut threaded to shorten the overall length of the forks. This is what I ended up doing. Dave had set done this way as well. It retains the stock travel and looks. The drawback is you have to send them to a competent machinist. Dave and I used
Gordy Goodworks. He does great work but it can take a while. At one point I wondered if I was going to get my forks back, but I did and it worked out great.
You can see how he does it here:
https://www.youtube.com/watch?v=HNiblp32Qq0