For 997 GT3, GT3 RS, and Turbo models with the new center lock option, HRE offers the Comp 90 and Comp 93. Specifications for the Comp Pin Drive Series is as follows:
18" and 19" available for steel or PCCB brake options.
Lightweight forged aluminum construction.
Ultra-lightweight Titanium assembly bolts. (Saves 1.5 lbs. over stainless steel)