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
• 9% increased flow
• 76mm, 80mm, 88mm inducer configurations
• Larger .88 A/R compressor housing volute
• GTX5020R features a 120mm comp exducer ( + 2 mm) and has 30% lower inertia*.
• Super core and turbine housing sold separately
• Compatible with GT and GTX turbine housings
Horsepower: 1075 - 2050
Displacement: 2.8L - 11.0L
| GTX5020R GEN II | Reference Data | Compressor | Turbine | ||||||
|---|---|---|---|---|---|---|---|---|
| Super Core PN | Replaces | Inducer | Exducer | Trim | A/R | Inducer | Exducer | Trim |
| 851285-5018S | NEW | 76mm | 120mm | 41 | 0.88 | 99mm | 91mm | 84 |
| 851285-5019S | NEW | 80mm | 120mm | 45 | 0.88 | 99mm | 91mm | 84 |
| 851285-5020S | 804878-5024S | 88mm | 120mm | 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 | ||
