VTT N55 GC/GC+ Turbocharger Upgrade

VTT BMW N55 GC / GC+ Turbocharger Upgrade

The N55 GC platform uses purpose-built VTT castings instead of placing oversized wheels inside restrictive factory housings. The result is a stock-location turbocharger engineered for strong response, airflow, and direct connection to the original service points.

Power Capability

• GC: stock through approximately 600 WHP
• GC+: stock through approximately 700 WHP

Output requires the appropriate fuel, airflow, engine, drivetrain, and calibration package.

Key Design Features

• All-new VTT compressor, bearing, and turbine housings
• 9-blade Mar-M 246 turbine wheel
• Point-milled 9-blade billet compressor wheel
• Revised bearing-housing oiling
• Performance-upgraded thrust system
• Direct connections for factory oil lines, coolant lines, downpipe, and charge pipe

Package Contents

One VTT N55 GC or GC+ turbocharger in the selected configuration. No core charge is required.

Fitment and Installation

Confirm the exact vehicle, production date, pneumatic or electronic wastegate configuration, inlet, and charge plumbing. VTT recommends the correct N55 installation kit and a high-flow inlet. Professional installation and a compatible calibration are required.

Supporting Systems

Fuel-system, intercooler, intake, downpipe, charge-pipe, PCV, engine, and drivetrain upgrades may be required to reach the advertised power range. Inspect every oil and coolant connection before startup.

Warranty

VTT turbocharger systems include a one-year limited warranty. Review the current warranty, installation, oil, and emissions terms during checkout.

Competition Use Only

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 (California Health & Safety Code 39048). Competition-only vehicles must be operated exclusively on a closed course in conjunction with a sanctioned racing event and transported to the event by trailer or other carrier. Use in any other vehicle may violate federal and/or state law, void the VTT warranty, and void the vehicle manufacturer’s warranty. The purchaser is responsible for compliance with all applicable laws.

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.