Trying to select the compound turbos for your diesel? Check out our 'Compound Turbo Deals'. This is our Stage 2 Compound Turbo Set which includes a VSRacing Billet 6670 1.0AR T4 and a Billet journal bearing S485 (85/88/1.32 T6) with Race Cover, along with a pair (2) of VSR Gen 3 44mm Wastegates and 18psi gate springs.
 
The 44mm wastegate should fit on any 44mm/45mm vband wastegate flange
 
  Great for 1000+whp while maintaining very good response and maintaining good control of compressor wheel speeds
 
****Wastegates required to be used****
 
Next Gen Billet 6670 Specs:
Comp
Inducer: 66mm
Exducer: 94mm
 
Turbine
Inducer: 78mm
Exducer: 70mm
Compressor Inlet: 4.0 Hose
Compressor Outlet: 2.5 Hose
Turbine Housing:  T4 Divided, 1.0A/R
Turbine Outlet: 4.0″ Vband
 
Billet S485 with Race Cover Specs:
Comp
inducer: 85.4mm
exducer: 115mm

Turbine:
Inducer: 96mm 
Exducer: 88mm

1.32AR divided T6

Compressor Outlet : S400 Vband
Turbine Outlet: 5″ Marmon S400 Discharge
Inlet Flange: T6 divided
Oil Feed Port 1/4npt recommenced to 4an
Oil Drain Std T6 drain Flange 12an Recommend
Oil Drain Thread Pitch M8x1.25
 
>>Note, this is for the turbos and wastegates only. No piping included