Weld Racing AlumaStar 2.0 is the wheel that professional drag racers use most. These black wheels are a 2-piece design with a 5-spoke forged center. Weld bolts these to cold-forged aluminum rim halves with 5/16 Grade 8 bolts. AlumaStar 2.0 wheels are NHRA-accepted in all classes and are over twice as strong as SFI 15.1 race wheel specs require them to be.