Vargas Turbo Technologies N55 "GC" DBB Cast Upgrade (NLA)

Our N55 “GC” upgrade consists of 100% new castings for the entire unit. The turbine housing and manifold have been cast in two pieces with all the factory flow restrictions removed. This allows our upgraded to support a whopping 600WHP. The highest for any drop in N55 upgrade. A Dual Ball bearing center section is used, coupled with VTT custom reverse wheels. The compressor is a full billet 10 blade GTX Gen 2 wheel, and the turbine is a Garrett style 10 blade design, these are the same turbine wheels you would find in the Garrett GT line up but made in reverse rotation. DBB “GC” upgrade also has the option to include a Turbosmart N55 TurboSmart KOMPACT EM DV to replace the stock plastic DV parts which are prone to cracking and leaking. This upgrade will support Stock levels-600WHP with quick spool and plenty of flow to redline. Turbo upgrade includes everything needed to install turbocharger including all water, and oil lines, and o-rings.


VTT N55 “GC” Units have no core charge

You have the choice of a genuine Garrett CHRA for $500 extra or an aftermarket CHRA for the listed price.

Add the install kit to make sure you have everything you need to get the job done right!

Install package price is for turbo installation ONLY, added parts such as Inlets, fuel system parts, etc will be additional labor.


Every VTT turbocharger comes with a 1-year limited warranty. Please read our Warranty / Emissions Disclaimer when checking out for more details.

THESE PARTS ARE LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW AND ARE NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. California law defines a “racing vehicle” as “a competition vehicle not used on public highways.” (Calif. Health & Safety Code 39048) These parts may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event. Competition-only motor vehicles may not be driven to a racing event on a public highway and must be transported on a trailer or other carrier. USE OF THESE PARTS IN ANY OTHER VEHICLE MAY SUBJECT YOU TO FINES AND PENALTIES FOR VIOLATION OF FEDERAL AND/OR STATE LAW, WILL VOID YOUR WARRANTY FROM Vargas Turbocharger Technologies, Inc., AND CAN VOID YOUR VEHICLE’S WARRANTY. It is your responsibility to comply with all applicable federal and state laws relating to the use of these parts, and Vargas Turbocharger Technologies, Inc. hereby disclaims any liability resulting from the failure to use these parts in compliance with all applicable federal and state laws.