Reviews
Cb400f Aluminum Box Swingarm
First the good: swingarm is well constructed, attractive and fits well. It looks quite racey installed, and if tweaked (see "the bad"), it has zero play in the pivot. Comes with needle bearings rather than bushings, and is nicely polished. Tig welding is excellent. Now the bad: The large outer tube forming the main pivot tunnel was distorted out of line from welding. To compensate, the fabricators use some tapered bushings and an oversized ID internal steel collar tube that simply will not work properly as received. The slop in the pivot with these parts is really excessive. So all the pivot parts but the bearings can be discarded, and you'll need to machine your own pivot. I used the factory honda center collar for the 400 and turned down the ends on a lathe to press into the bearing races, but there are other ways to solve this issue. So this swingarm is not for the average skill modder. Other issues: lead time is months, and you'll need to get a slightly longer chain. Also note that you'll have to bend the brake rod about 10 degrees, see photo. But solve these issues and you'll have a race ready rear end. View detail