The XR-03 & 05 drivers are non-conforming. The XR-05 CTi is TaylorMade's answer to the Callaway ERC Fusion, Mizuno MP-001, and Yonex CyberStar PowerBrid.
The XR-05 CTi, which stands for "composite titanium," features a large, 460cc head consisting of three parts:
>Super thin 6-4 titanium body
>SP700 titanium clubface (finer than 6-4 titanium)
>Carbon-fiber crown
The XR-05 CTi's carbon-fiber crown is 15 grams lighter than a comparable titanium crown, allowing TaylorMade engineers to allocate the saved weight to carefully calculated points within the clubhead to create a lower, deeper CG.This precision-placed CG location enables the XR-05 CTi to deliver launch conditions that result in the precise degree of high launch-angle and the precise degree of low spin-rate needed to produce maximum distance.