EFR 6258
The EFR 6258 is the smallest turbocharger in the ultra-efficient EFR lineup. The 62mm OD compressor has a 49.6mm inducer at 44lb/min max flow - supporting up to 440hp with very large map width for outstanding power potential even at high boost. The 6258 is the fastest spooling EFR turbo - and fits in a small package. Ideal for small engines in single turbo configuration and stock internal or modified engines. This is an excellent turbocharger for autocross, rally, drift, road racing and street driven applications. The low inertia 58mm Gamma-Ti turbine wheel is optimally matched for maximum response and fastest spool with the FMW compressor wheel. EFR 6258 uses the smallest-sized EFR compressor housing, fitting in the tightest engine bays particularly twin turbo V6 applications. Ideal for use in single turbo applications for the 260-440hp range, or as twin turbo applications 400-700+hp. Ceramic Ball Bearing only, watercooling recommended (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 type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 58mm (recommended) OR 55mm
• Stainless Steel Investment Cast Housing
• 0.83 A/R T3 Housing(Internal WG)
Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos
Turbine Options: T25, .64 a/r, single scroll
EFR 6758
EFR 6758 is a versatile turbocharger with very large map width for outstanding power potential even at high boost - and does it in a small package. This is an excellent turbocharger for autocross, rally, drift, road racing and street driven applications. This turbo uses a 67mm OD compressor with a 53.9mm inducer to support a remarkable 49lb/min max flow rate. The low inertia 58mm Gamma-Ti turbine wheel is the optimal match for the FMW compressor wheel. EFR 6758 uses the smallest-sized EFR compressor housing, fitting in the tightest engine bays particularly twin turbo V6 or V8 applications. In twinscroll T4 configuration, the 6758 delivers mindblowing fast spool and response while working well on stock and modified engines. Ideal for use in single turbo applications for the 300-490hp range, or as twin turbo applications 550-900+hp. Ceramic Ball Bearing only, watercooling recommended (not mandatory).
Compressor Specifications
• Compressor Wheel OD (exducer): 67mm
• Compressor Wheel Inducer: 53.9mm
• Max Flow Rate: 49 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 type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 58mm
• Stainless Steel Investment cast Housing
• 0.64 A/R T25 undivided (Internal WG)
Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos
Turbine Options: T25, .64 a/r, single scroll
EFR 7064
EFR 7064 is an excellent turbocharger for drift, road racing and street driven applications. The 7064 delivers incredibly fast spool and response while working well on stock and heavily modified engines. The 70mm OD compressor has a 52.2mm inducer and at 56lb/min max flow - there is potential for 560hp - unheard of for this size compressor wheel. The low inertia 64mm Gamma-Ti turbine wheel is the optimal match for the 70mm FMW compressor wheel and is capable of 45+psi boost. This turbo uses the mid-size EFR ported-shroud compressor housing, great for fitment in cramped engine bays. Ideal for use in single turbo applications for the 350-560hp range, or as twin turbo applications 650-1000+hp. Ceramic Ball Bearing only, watercooling recommended (not mandatory)
Compressor Specifications
• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip ** picture of EFR 7064 compwheel
• Compressor Wheel OD (exducer): 70mm
• Compressor Wheel Inducer: 52.2mm
• Max Flow Rate: 56 lb/min
• Compressor Housing: 3.5" Ported shroud inlet, 2.0" hose coupler outlet
• Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
• Connections:
Inlet: 3.5" Hose Coupler
Outlet: 2.0" Hose Coupler w/ integrated Vband option
Turbine Specifications
• Turbine type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 64mm
• Stainless Steel Investment cast Housing
The EFR 7064 is available in (3) different turbine housing configurations:
0.83 A/R T3 undivided (Internal WG) +$50.00
0.92 A/R T4 twinscroll (Internal WG) +$150.00
1.05 A/R T4 twinscroll (External WG)
Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos
EFR 7670
EFR 7670 is ideal for road racing and time attack applications, as well as responsive high power street driven vehicles. Engineered for great spool, quick response and the potential to surpass 640hp - the 7670 is capable of 64lb/min compressor flow - unheard of for this size compressor wheel. The 7670 is an excellent turbocharger for road racing and time attack applications, as well as responsive high power street driven vehicles. The 70mm Gamma-Ti turbine wheel is the optimal match for the 57.2mm inducer / 76mm exducer FMW compressor wheel and is capable of 45+psi boost. This turbo uses the mid-size EFR ported-shroud compressor housing, great for fitment in cramped engine bays. Ideal for use in single turbo applications for the 400-650hp range, or as twin turbo applications 800-1200+hp. Ceramic Ball Bearing only, watercooling recommended (not mandatory)
Compressor Specifications
• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
• Compressor Wheel OD (exducer): 76mm
• Compressor Wheel Inducer: 57.2mm
• Max Flow Rate: 64 lb/min
• Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
• Compressor Housing Connections:
Inlet: 3.5" Hose Coupler
Outlet: 2.0" Hose Coupler
Turbine Specifications
• Turbine Type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 70mm
• Stainless Steel Investment cast Housing
The EFR 7670 is available in (3) different turbine housing configurations:
0.83 A/R T3 undivided (Internal WG) +$50.00
0.92 A/R T4 twinscroll (Internal WG) +$150.00
1.05 A/R T4 twinscroll (external WG)
Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos
EFR 8374
EFR 8374 is engineered to support big power levels yet spool fast enough for professional time attack teams. The 74mm Gamma-Ti turbine wheel is the optimal match for the 62.6mm inducer / 83mm exducer FMW compressor wheel and is capable of 79lb/min airflow and 45+psi boost. This is one of the most exciting turbos in the EFR lineup for the high-power addicts. This turbo has the largest EFR compressor housing and is ideal for use in single turbo applications for the 500-800hp range, or as twin turbo applications >1400+hp. Ceramic Ball Bearing only, watercooling optional (recommended)
Compressor Specifications
• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
• Compressor Wheel OD (exducer): 83mm
• Compressor Wheel Inducer: 62.6mm
• Max Flow Rate: 79 lb/min
• Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
• Compressor Housing Connections:
Inlet: 4" Ported Shroud Hose Coupler
Outlet: 2.5" Hose Coupler w/ integrated Vband option
Turbine Specifications
• Turbine Type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 74mm
• Stainless Steel Investment cast Housing - The EFR 8374 is available in (3) different turbine housing configurations:
0.83 A/R T3 undivided (Internal WG) +$50.00
0.92 A/R T4 twinscroll (Internal WG) +$150.00
1.05 A/R T4 twinscroll (external WG)
Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos
EFR 9180
EFR 9180 is the biggest, baddest, highest flowing turbo in the EFR family. Capable of a remarkable 94lb/min airflow and stable at very high boost levels, the 91mm OD compressor measures 67.7mm inducer and is a 7 blade FMW compressor. This turbo will redefine what 67mm turbos are capable of. After receiving requests from many high power enthusiasts and drag racers restrained to a 67mm inducer, there was a clear need for 1000hp capable turbos that still provide good spool and response. Using the high flowing 1.05 a/r Twinscroll T4 turbine housing is the most efficient way to run this as a single turbocharger. If twin turbos will be run, the .83 a/r or 1.05 a/r can be used, depending on manifolds and space constraints. Ideal for use as single turbo applications in the 700-1000hp per turbo range, or as very high power twin turbo applications >1000-1700+hp. Available with .83 a/r undivided T3 internal WG or 1.05 a/r divided twinscroll T4 housings (external WG). Ceramic Ball Bearing only, watercooling optional (recommended)
Compressor Specifications
• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
• Compressor Wheel OD (exducer): 91mm
• Compressor Wheel Inducer: 67.7mm
• Max Flow Rate: 94 lb/min
• Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
• Compressor Housing Connections:
Inlet: 4" Ported Shroud Hose Coupler
Outlet: 2.5" Hose Coupler w/ integrated Vband option
Turbine Specifications
• Turbine Type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 80mm
• Stainless Steel Investment cast Housing
The EFR 9180 is available in (2) different turbine housing configurations:
0.83 A/R T3 undivided (Internal WG) +$50.00
1.05 A/R T4 twinscroll (external WG)
Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos