Magnuson products for GM vehicles
| Turbos: |
| ITS |
| Garret |
| Master Power |
| Tubonetics Inc. |
| Transmission Products: |
| GM |
| Precision Industries |
| Superior |
| Intercoolers: |
| Spearco |
| Wastegates and Blow Offs: |
| HKS |
| Tial |
| Turbonetics Inc. |
| Turbosmart |
| Suspension: |
| Air Lift Company |