This is a stock Garrett 835998-5007S GT2860RS CHRA that has been upgraded with a custom billet compressor wheel by Turbos Direct an authorized Garrett distributor and repair shop. The new billet compressor wheels are specifically made for the 2860 and feature more blade surface area do to the thinner root when compared to the stock cast wheel while also being lighter overall. Garrett produces over over 30,000 turbos EVERY DAY, and also make a number of turbo accessories. Garrett continues to redefine the art and science of boosting technology with advanced air management systems for the full spectrum of modern engines. You know the Garrett name is one you can trust.