No adapters to come loose and cause vibration. These shafts are built with the very same components as our other shafts featuring Heavy Duty American Made parts and Heavy wall tubing. Each shaft is handmade and balanced by our techs not a robot. We are very pleased to offer a shaft in which our customers can swap out their heavy steel shafts and save about 25 lbs! While increasing the performance of their cars.
** Side note we can also build these in 3.5" with special order at no additional cost (see options menu)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov