Billet Dual Drilled Adapters Machined
Topline Billet Wheel Adapters we made from the finest T6 grade billet aluminum, for superior strength and hardness. Topline offers a variety of choices with 4 lug and 5 lug daul drill applications. Dual drill applications effectively reduce your inventroy carrying costs. Unless otherwise noted, all adapters come standard with 12mm x 1.50 studs, and open-end lug nuts are included. Whether you want to space out your wheels, change bolt patterns, or both Topline has the right adapter fitments for all your wheel installation needs.
| part no. | Thread Size | thickness | center bore | outside diameter | finish | description | Bulk | QTY Avail |
| C100-4425-4100-4450 | 12x1.50 | 1 | 74.10mm | 6.25 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.00 H - 4X4.25/4X100 To 4X4.50 - 74.1mm CB - 12X1.50 | 4 | 8 |
| C100-4100-4450-4100 | 12x1.50 | 1 | 74.10mm | 6.25 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.00 H - 4X100/4X4.50 To 4X100 - 74.1mm CB - 12X1.50 Stud | 4 | 15 |
| C100-4100-4450-4425 | 12x1.50 | 1 | 74.10mm | 6.25 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.00 H - 4X100/4X4.50 To 4X4.25 - 74.1mm CB - 12X1.50 | 4 | 7 |
| C100-4425-4450-4100 | 12x1.50 | 1 | 74.10mm | 6.25 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.00 H - 4X4.25/4X4.50 To 4X100 - 74.1mm CB - 12X1.50 | 4 | 23 |
| C125-4100-4450-4425 | 12x1.50 | 1.25 | 74.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 4X100/4X4.50 To 4X4.25 - 74.1mm CB - 12X1.50 | 4 | 0 |
| C125-5135-5500-5450 | 12x1.50 | 1.25 | 87.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X135/5X5.00 To 5X4.50 - 87.1mm CB - 12X1.50 Studs | 4 | 28 |
| C125-5450-5475-5135 | 12x1.50 | 1.25 | 87.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X4.75 To 5X135 - 74.1mm CB - 12X1.50 | 4 | 20 |
| C125-5100-5425-5450 | 12x1.50 | 1.25 | 74.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X100/5X4.25 To 5X4.50 - 74.1mm CB -12X1.50 Studs | 4 | 68 |
| C125-5450-5475-5450 | 12x1.50 | 1.25 | 74.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X4.75 To 5X4.50 - 74.1mm CB - 12X1.50 | 4 | 394 |
| C125-5135-5500-5135 | 12x1.50 | 1.25 | 87.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X135/5X5.00 To 5X135 - 87.1mm CB - 12X1.50 Stud | 4 | 19 |
| C125-5475-5500-5500 | 12x1.50 | 1.25 | 78.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.75/5X5.00 To 5X5.00 - 78.1mm CB - 12X1.50 | 4 | 136 |
| C125-5500-5550-5450 | 12x1.50 | 1.25 | 78.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X5.00/5X5.50 To 5X4.50 - 78.1mm CB - 12X1.50 | 4 | 103 |
| C125-5500-5550-5475 | 12x1.50 | 1.25 | 87.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X5.00/5X5.50 To 5X4.75 - 78.1mm CB - 12X1.50 | 4 | 76 |
| C125-5450-5475-5550 | 12x1.50 | 1.25 | 87.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X4.75 To 5X5.50 - 74.1mm CB -12X1.50 Studs | 4 | 125 |
| C125-5450-5500-5475 | 12x1.50 | 1.25 | 78.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X5.00 To 5X4.75 - 78.1mm CB - 12X1.50 | 4 | 140 |
| C125-5450-5475-5475 | 12x1.50 | 1.25 | 74.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X4.75 To 5X4.75 - 74.1mm CB - 12X1.50 | 4 | 341 |
| C125-5450-5475-5500 | 12x1.50 | 1.25 | 74.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X4.75 To 5X5.00 - 74.1mm CB - 12X1.50 | 4 | 155 |
| C125-5135-5500-5475 | 12x1.50 | 1.25 | 87.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X135/5X5.00 To 5X4.75 - 87.1mm CB - 12X1.50 Studs | 4 | 50 |
| C125-5450-5475-5115 | 12x1.50 | 1.25 | 74.10mm | 7 | Machined | Dual Drill Billet Adapter - 7 Inch Dia - 1.25 H - 5X4.50/5X4.75 To 5X115 - 74.1mm CB - 12X1.50 | 4 | 40 |