Our balancing shaft is 0.500" TGP (turned, ground and polished) steel shafting. The stepped cones are stepped at 17, 20, and 25 mm. The cones are made from aircraft quality aluminum and are turned on a CNC lathe to high tolerances. They are then clear anodized to provide a lasting durable finish. A pair of stepped cones and one balancing axle comes with each balancer.

This adaptor mounts to the early K-bike wheels. It is only for the four holed BMW rear wheels. It will not adapt to the newer 5-hole rear wheel. It mounts to your rear wheel using two of your rear wheel bolts and two conical washers from your bike. They are CNC machined of aircraft quality aluminum and clear anodized. If you are interested only in balancing the older four holed rear wheels a balancer with this adaptor is a terrific value.

The 4-5-hole adaptor will mate with most all modern BMW rear wheels since 1985 having the 50mm tenon on the inside of the wheel (the side contacting the drive). It will not, however, fit on the newer wheels designed for the shallow rear drive. They are CNC machined of aircraft quality aluminum and clear anodized. It is secured to the rear wheel using two of your rear wheel bolts and conical washers.

Here you see both ways a 4-5 hole adaptor will fit on the four holed wheels.

This baby does 'em all. That is all of the above and the newest rear wheels. Same high quality and finish.

Here's a picture of the new 4-5-5 hole wheel adaptor mounted on an R1200GS hub.

This adaptor only fits BMW's new open center wheels. It has more contact area than that of our 4-5-5 adaptor when used on this new wheel design.