BorgWarner EFR 6258 Turbo

BorgWarner EFR 6258 Turbo

BorgWarner EFR 6258 is the fastest Spooling EFR Turbo.. Ideal for small engines (2.5L) in single OR twin turbo configuration, this is an excellent turbocharger for autocross, rally, drift, road racing and street driven applications. A direct plug-n-play for SR20DET, its also popular for Subaru WRX and Nissan Sentra SpecVs.

The 62mm OD compressor has a 49.6mm inducer rated at 44lb/min max flow – supporting up to 440hp. This compressor wheel is versatile with very large map width for outstanding power potential, even at high boost. The low inertia 58mm Gamma-Ti turbine wheel is optimally matched for maximum response and fast spool with the FMW compressor wheel. EFR 6258 uses the smallest-sized EFR compressor housing, making fitment in the tightest engine bays possible. Ideal for use in single turbo applications for the 260-440hp range, or as twin turbo applications 500-800+hp. Ceramic Ball Bearing only, watercooling recommended but not mandatory.

COMPRESSOR SPECIFICATIONS

Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
Compressor Wheel OD (exducer): 62mm
Compressor Wheel Inducer: 49.6mm
Max Flow Rate: 44 lb/min
Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
Compressor Housing: 2.5″ inlet, 2.0″ hose coupler outlet.

TURBINE SPECIFICATIONS

Turbine Wheel Material: Low Inertia Gamma-Ti Turbine Wheel
Turbine Wheel OD: 58mm (recommended) OR 55mm
Turbine Housing Material: Stainless Steel Sand Cast Housing
Turbine outlet: GT-Vband (aka small 3″ vband) ~92mm OD for all EFR turbos

FEATURES

Dual Row Ceramic Ball Bearings – lowest friction and fastest spool/response, most extreme durability, built-in 2mm oil restrictor
Watercooled Center Section – watercooling is recommended, 14mm banjo bolts