Engineered for performance and precision, the Thunder Bolts Club Sports Titanium Forged Stud Conversion Kit is the ultimate upgrade for your BMW E-Chassis. Designed to improve both safety and convenience, this stud conversion system replaces traditional wheel bolts with aerospace-grade titanium M12 studs and nuts—offering improved shear and tensile strength while reducing rotational mass. With a secure conical seat and special security head design, this kit delivers reliability under the most demanding driving conditions. Whether you’re hitting apexes on the track or switching between setups at home, the 75mm stud lengths and 25mm HEX nuts make wheel changes fast and frustration-free, even with large or heavy wheels.
Titanium forged from Ti-6Al-4V (Grade 5) alloy, each stud and nut boasts exceptional mechanical properties—970MPa tensile strength, 560MPa shear strength, and a corrosion-resistant natural finish. This kit includes 16 or 20 studs and 16 or 20 nuts, plus dedicated installation tools and a thread locker to ensure a secure fitment. Compatible with most BMW E-Chassis models, the Thunder Bolts kit also supports wheel spacers up to 15mm, making it ideal for track setups or aggressive fitments. Upgrade your BMW’s wheel system with the confidence and quality worthy of the badge—because performance starts at the core.
Product Details:
- Nut Thread: M12 x P1.5
- Stud Bolt Thread: M12×P1.5-P1.5
- Total Length: Nut: 25mm / Stud Bolt: 75mm
- Seat: Conical
- Head: 17mm HEX,PENRAGON and TORX
- Weight Per: Nut 16g(0.56oz) / Stud Bolt 34g(1.19oz)
- Finish: Natural
Mechanical Property:
- Mechanical Property Material: Aerospace grade titanium ASTM B348 Ti-6Al-4V Gr.5
- Density: 4.47g/cm3
- Yield Strength: 890MPa(129 KSI)
- Tensile Strength: 970MPa (141 KSI)
- Shear Strength: 560 MPa (81 KSI)
Note:
- Set of 16/20 (16/20×Nuts + 16/20×Studs bolt)
- Use for Track
- Dedicated tools and a thread locker are included.
- The Pentagon and Torx require a special security tool, which is included if selected.