BorgWarner Aluminum B2 EFR 9280 Turbo 74mm Ball Bearing + T4 Divided .

B2 EFR Turbo

The "B2" housing in the BorgWarner EFR turbocharger lineup is specifically engineered for larger turbine wheels and high-power applications, distinguishing it from smaller housings such as the "A" series. Its increased size allows for greater airflow and higher power potential, making it ideal for demanding, high-horsepower setups.

Designed to accommodate larger engines and higher boost requirements, the EFR B2 series turbos are optimized for applications where maximizing performance and airflow is critical. For those seeking a turbocharger capable of supporting a high-power engine, the EFR B2 housing offers the capacity and efficiency necessary for superior results.

BorgWarner EFR 9280 Turbocharger Overview
The EFR 9280 from BorgWarner Turbo Systems represents the ultimate in high-performance, race-focused turbocharger technology. Designed for applications requiring 800–1,100+ horsepower, it combines exceptional spool characteristics with unmatched power delivery. With a proven track record in elite motorsport events such as Time-Attack and Formula Drift championships, the EFR 9280 is the ideal choice for competitive racing and extreme high-performance builds.

Innovative Design for Peak Performance

The EFR 9280 features a 91mm compressor wheel paired with an 80mm Gamma-Ti (titanium aluminide) turbine wheel, ensuring rapid spool times and industry-leading airflow. The extended-tip compressor design and optimized aerodynamics enable the turbo to achieve a maximum flow rate of 110 lb/min at 117,000 RPM shaft speed, providing remarkable top-end performance without sacrificing response.

To suit a wide variety of applications, the EFR 9280 is available in four turbine housing configurations:

• 0.83 A/R T3 Undivided (Internal WG) (#12741008000)
• 0.92 A/R T4 Twin Scroll (Internal WG) (#12741008001)
• 1.05 A/R T4 Twin Scroll (External WG) (#12741019002)
• 1.45 A/R T4 Twin Scroll (External WG) (#12741008003)

Notable Features

The EFR 9280 integrates cutting-edge technology and materials to deliver unparalleled performance and durability:

• Gamma-Ti Turbine Wheel: Lightweight, low-inertia design for quick spool and exceptional durability.
• Integrated Compressor Recirculation Valve (CRV): Built-in for efficient and reliable operation.
• Dual Ceramic Ball Bearing Assembly: Includes a metal cage for reduced friction and maximum durability.
• Boost Control Solenoid Valve (BCSV): Integrated for precise and responsive boost control.
• Black Anodized Forged Milled Compressor Wheel (FMW): Advanced blade geometry for increased efficiency and distinct appearance.
• Extended Tip Technology: Optimized for high airflow and maximum performance.
• Compressor Cover with Speed Sensor Mounting Provisions: Facilitates easy integration of speed sensors.

Compressor and Turbine Specifications

Compressor Specifications:

• Type: Forged-Milled Wheel (FMW) with Extended Tip Technology
• Wheel OD (Exducer): 91mm
• Wheel Inducer: 73.7mm
• Max Flow Rate: 110 lb/min
• Inlet: 4″ Ported Shroud Hose Coupler
• Outlet: 2.5″ Hose Coupler with optional V-Band

Turbine Specifications:

• Type: Gamma-Ti Low Inertia Wheel
• Wheel OD: 80mm
• Housing Material: Stainless Steel
• Outlet: GT V-Band (~92mm OD)

Kit Components

The EFR 9280 kit includes:

• Super-Core
• Turbine Housing
• Clamp Plate Hardware

For wastegated configurations, the kit also includes:

• Actuator
• Actuator Bracket

Wastegate Actuator Options:

• Low Boost Canister: 4.0 psi opening, 13.7 psi full stroke.
• Medium Boost Canister: 8.8 psi opening, 20.6 psi full stroke.
• High Boost Canister: 16.8 psi opening, 32.3 psi full stroke.

Proven Track Record

The EFR series turbochargers are globally recognized for their class-leading performance, reliability, and versatility. The EFR 9280 builds on this legacy, offering industry-best power and spool characteristics, making it a trusted choice for professional motorsport and extreme performance enthusiasts alike.

Applications and Compatibility

The EFR 9280 is compatible with single-turbo setups for engines ranging from 3L to 6L, as well as twin-turbo configurations for larger displacement engines. Ideal for those seeking maximum horsepower and fast response in both competitive and high-performance environments.