Gen II Compressor Wheel Dimensions and Aerodynamics
GTX4709R GTX5009R Available in 76mm and 80mm inducer diameters
- Comp exducer is now 109mm (+1mm vs Gen I)
- Gen II wheel produces 15% more air flow
- 39% lower inertia
GTX4720R GTX5020R Available in 76mm, 80mm, and 88mm inducer diameters
- Comp exducer is now 120mm (+2mm vs Gen 1)
- Gen II wheel produces 9% more air flow
- 30% lower inertia
- Reduced inertia due to reduction of material in the hub and blades
- Roughly 20% lower mass
- Lower inertia helps make boost faster and increases overall turbo efficiency
- Increased flow has potential to make more power at same boost or same power at lower boost levels
Larger Comp Exducer on Gen II
Features
• GEN II compressor wheel aerodynamics
• 15% increased flow
• 76mm, 80mm, inducer configurations
• Larger .88 A/R compressor housing volute
• GTX5009R features a 109 mm comp exducer ( + 1mm) and has 39% lower inertia*.
• Super core and turbine housing sold separately
• Compatible with GT and GTX turbine housings
Horsepower: 875 - 1700
Displacement: 2.5L - 10.0L
| GTX5009R GEN II | Reference Data |
Compressor |
Turbine |
| Super Core PN |
Replaces |
Inducer |
Exducer |
Trim |
A/R |
Inducer |
Exducer |
Trim |
| 851285-5016S |
NEW |
76mm |
109mm |
49 |
0.88 |
99mm |
91mm |
84 |
| 851285-50017S |
804878-5020S |
80mm |
109mm |
54 |
0.88 |
99mm |
91mm |
84 |
| Notes: |
Turbine Kit PN |
A/R |
Inlet |
Outlet |
Wastegate |
Divided |
Trim |
| Super Core and Turbine Kit Sold Separately |
761208-0030 |
0.96 |
T6 |
V-Band |
Free Float |
N |
84 |
| 761208-0033 |
1.39 |
T6 |
V-Band |
Free Float |
N |
84 |
