Mark, nice bike... how did you achieve the lowering? I dont see any blocks back there... Shorter rear shocks, and slipped the front?
Several things:
Front: no spacers in the springs, lowered the fork tubes all the way to the handlebars in the trees. added air fork caps for the rider's two-up days, for some compensation of the trail.
Rear: CB550 shocks and 110/90 tire on 18" rim (considered 17" rim, but for the hard-to-find tires).
Middle: trimmed the seat foam toward the front of the seat, similar to the way Honda did on the K2 seats (the best of all of them, IMHO...), with the stock seat cover going back on afterward.
The rider is only about 5'8" tall, with a 27" inseam, but REALLY wanted to ride a 67 HP version of a CB750, for a genuine 100+ MPH experience. He only weighs in at about 115 lbs, too, so the 550 shock springs are just right for him on their middle notch. It sits low enough that getting it to the centerstand will test your resolve! We had to spread the sidestand's yoke and I got a much-used one that had some wear in there, to boot. Then I added a washer on the bottom side of the inside of the yoke, to kick it far enough out to give the bike a comfy lean angle on side park. It worked out fine.
The engine is largely stock & balanced, but with rocker mods, head work, "selected" cam and a cam sprocket that set the timing forward 2 degrees, polished valves, lots of attention to tranny, etc., like I usually do. It also runs the Powersport chain with genuine Honda sprockets, losing less power than other setups in the final drive.
