As you noticed by the number of posts I already published, open belt drive systems find their place in more and more bike models, in many widths and designs.
This latest release comes from Ultima Products, a company already offering an old school 2″ primary belt drive system for Harley Dyna (left picture).
Ultima just added to its line-up a new 3.5″ system for both Evo & Twin Cam Dyna models from 1991 to 2005. You can install it with no modification. Available in 2 versions, Street or Drag Style (right picture) both with outboard supports in 3 different designs. Backing plate is billet 6061-T6. Front grill guards and side covers are also available. All Ultima Products are distributed exclusively by Midwest Motorcycle Supply. Retail clients must order through a Dealer. All designs & options can be seen at Ultima Products.