You have to have a reasonably good reason to elevate the frame from the rear wheel.
Yes, the geometry will shift the rake of the front wheel assy usually to make the steering more sharp but can be a little unpredictable under brakes in a corner.
I did this virtually unwittingly by getting a pair of KONIS and rebuilding them like new BUT the series was wrong for my CB 750K5.
I should have placed Konis 7610-1296s on the beast but placed -1314 on the bike.
Rides wel with two up, but It will not sit well with the center-stand in position. Mostly the rear wheel will sit on the ground. Also the bike will lay over at a terrible angle No good for carby bikes. Also the chain when slightly loose will grind through the centerstand webpads, giving the bike a terrible vibration, usuallu i think of the worst thing available but its the chain on the legs of the part which touches the ground first.
Too high.Stick to the normal shocks and use a high profile tire if it's too low.
Dave
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