GT-RR GT Roll Cage, Back Half Type for Nissan GT-R [R35] The ultimate bolt in R35 GT-R Roll Cage. This TIG welded, 4130 chromoly work of art is extremely intricate and strong. Engineered to be a proper factory style design that provides the safety and style of a weekend racer with the refinement of a daily driver. Features: Fits with all of the stock interior and without cutting for a Nissan factory looking finish. Custom colors available at no additional charge! Standard color is satin black. 1.75″x .120″ 4130 Chromoly construction