| Business | Phone |
| Barnes Systems Inc 3162 Kashiwa St, Torrance 90505 | (310) 534-3844 |
| Coast High Performance 2555 W 237th St, Torrance 90505 | (310) 784-2977 |
| Cosworth Engineering Inc 3031 Fujita St, Torrance 90505 | (310) 534-1390 |
| Donovan Engineering & Manufacturer 2305 Border Ave, Torrance 90501 | (310) 320-3772 |
| G Serrano Co 20938 Normandie Ave, Torrance 90502 | (310) 533-8273 |
| Jti Inc 1603 Border Ave, Torrance 90501 | (310) 320-2660 |
| Reactor Products 1920 Oak St, Torrance 90501 | (310) 323-0065 |
| Simpson World 22632 Normandie Ave, Torrance 90502 | (310) 783-0756 |
| Donovan Engineering Corp 2305 Border Ave, Torrance 90501 | (310) 320-3772 |
| Erick's Racing 1842 Del Amo Blvd, Torrance 90501 | (310) 320-5788 |
| Sander Engineering 3155 Kashiwa St, Torrance 90505 | (310) 534-1210 |
| Team Simpson Racing 2415 Amsler St, Torrance 90505 | (310) 325-6035 |
| H & M Performance 22633 Normandie Ave, Torrance 90501 | (310) 618-8210 |
| Hot Rod Performance 1932 Del Amo Blvd, Torrance 90501 | (310) 782-9200 |
| Jud Phillips Racing 1502 1/2 W 228th St, Torrance 90501 | (310) 539-1917 |
| Zero Factory 1846 Del Amo Blvd, Torrance 90501 | (310) 533-8788 |
| Tanabe Racing Dev Usa Inc 1849 Western Way, Torrance 90501 | (310) 618-0600 |
| Bondio Fabrication 22130 S Vermont Ave, Torrance 90502 | (310) 783-0515 |
| Roark Automotive 22628 Normandie Ave, Torrance 90502 | (310) 320-2870 |
| Run-It-Again Motor Sports Inc 22134 S Vermont Ave # E, Torrance 90502 | (310) 782-8229 |
| Swanson Performance Inc 22414 Normandie Ave, Torrance 90502 | (310) 787-7800 |