Our 40 splined Ultimate Unit Bearings just got better, with the welcoming of 2 new wheel bolt patterns. In addition to 6 on 5-1/2″ pattern, 40 splined Ultimate Unit Bearings are now available in 8 on 6-1/2″ and 5 on 5-1/2″ bolt patterns. As of this post, these new options are currently out of stock (thanks KOH), but they are rolling fast and in time for anyone after that perfect 2015 King of the Hammers upgrade. Online ordering available as always, head over to The Spidertrax Store for full details, http://www.spidertrax.com/products/Ultimate-Unit-Bearings .