| Business | Phone |
| Kinsler Fuel Injection 1834 Thunderbird, Troy 48084 | (248) 362-1145 |
| Total Flow Products 1197 Rochester Rd N, Troy 48083 | (248) 588-4490 |
| Ram Power 2859 Industrial Row Dr, Troy 48084 | (248) 435-0269 |
| Payn Technologies 1668 Thorncroft Dr, Troy 48084 | (248) 649-3966 |