Thunder Bolts

Thunder Bolts is a Japanese manufacturer of Club Sports titanium forged wheel stud conversion kits, with fitment covering an unusually wide range: BMW (E, F, and G chassis), Porsche, Audi, Mercedes-AMG, Ferrari, Lamborghini, McLaren, Lotus, Subaru, Toyota GR86/Supra, and Lexus.

Kits are available in hex or standard drive, with ball, conical, or 75mm seat options depending on OEM vs. aftermarket wheel fitment. Titanium construction cuts unsprung mass compared to steel studs.