HKS pulled out all the stops for the Superior Spec R exhaust. They started with large diameter full titanium piping for the ultimate in light weight and durability. The Spec R uses wide radius bends to maintain exhaust velocity throughout the whole exhaust system, resulting in the distinctive heart shaped tailpipe assembly on the Nissan GTR exhaust pictured. The system is finished off with quad 124mm burnt titanium tips with internal slits to control sound while still giving off the aggressive tone of the VR38DETT motor.
