The Hoyt Formula XD Riser uses the Formula Limb design.  The Hoyt Formula XD riser has dampeners built into the riser to absorb shock and vibration.  The Formula XD design with grip-to-limb pivot geometry that optimizes the tuning to eliminate vertical nock travel.

The Hoyt Formula XD is finished with a Cerakote finish to be tough and hard-wearing.  The finish on Hoyt Fomula XD  Cerokote finish is like an anodized finish but it is a flat colour and is smooth on the touch.

The Formula XD can be adjusted in poundage.  The Hoyt Formula can adjust the limb pivot to change the feel of the draw and speed.