4831 b= 375 HP
This Entry Level unit features the following:
• 48mm inducer compressor wheel
• "B" compressor cover 2.8" inlet/2.0" outlet
• T31, 76 trim turbine wheel
• Turbine housing options:
  - T3 .48 or .63 A/R with 4 bolt discharge
  - T3 .48 or .63 A/R with 5 bolt discharge (with or without wastegate hole)
• 360° journal bearing system

3254 E= 470 HP
This Entry Level unit features the following:
• 55mm inducer compressor wheel
• "E" compressor cover 3.0" inlet/2.0" outlet
• 54mm exducer turbine wheel
• Turbine housing options:
  - T3 .63 A/R with 4 bolt discharge
• 360° journal bearing system

5431 E= 500 HP
• CEA (Competition Engineered Aerodynamics) aka Billet 54mm inducer compressor wheel
• "E" compressor cover 3.0" inlet/2.0" outlet
• T31, 76 trim turbine wheel
• Turbine housing options:
  - T3 .48 or .63 A/R with 4 bolt discharge
  - T3 .48 or .63 A/R with 5 bolt discharge (with or without wastegate hole)
• 360° journal bearing system

5557 E= 570 HP

the best both on the track and off. Whether you're a diehard racer or just looking to boost your daily driver's performance,
• CEA (Competition Engineered Aerodynamics) aka Billet 55mm inducer compressor wheel
• Compressor cover options:
  - "B" compressor cover 2.8" inlet/2.0" outlet
  - "E" compressor cover 3.0" inlet/2.0" outlet
• Turbine housing options:
  - T3 .48, .63 or .82 A/R with 4 bolt (2.5") discharge
  - T3 .48 or .63 A/R with 5 bolt discharge (with or without wastegate hole)
  - T3 .48, .63 or .82 A/R with 3" V-Band discharge
  - V-Band inlet .64 or .82 A/R with V-Band discharge
• Available with either a Hydrodynamic 360° thrust bearing system or an air-cooled, dual ceramic ball-bearing center housing rotating assembly (CHRA)