We've made no secrets about our affinity for BB30. It's a good bottom bracket system -- it offers numerous advantages over the current external bearing bottom bracket and seemingly no disadvantages except that it is available on a limited (but growing) number of Pro level racing frames. For the Shimano Dura-Ace rider, BB30 has presented a compatibility problem. Leave it to Wheels Manufacturing to come up with a nicely executed solution. Their BB30 Adapter for Shimano cranks makes the fitment of Shimano road cranks to BB30 frames a simple affair.
The Wheels Manufacturing BB30 Adapter consists of two reducer sleeves turned down from solid blocks of Delrin. These adapters utilize a press fit into the BB30 bearings and, once in place, allow you to slide the Shimano crank spindle through just as you would in a standard Shimano bottom bracket assembly. The Delrin supports the spindle perfectly and the resulting performance is exactly what you'd expect from your Shimano cranks -- no wiggles and no creaks.
The Wheels Manufacturing BB30 Adapter for Shimano is compatible with all Shimano and Shimano compatible road cranks designed for external bearing cups and having a 24mm spindle.
- BB30 adapter for Shimano road cranks with external bearing cups and 24mm spindle