Brembo 915515 D-Bobbin Semi-Floating Disc Hardware Pack 8mm Flange 12-Hole

The Brembo 915515 is a D-Bobbin Semi-Floating Disc Hardware Pack designed for Brembo GT Series brake systems. This hardware pack provides the precision fastening components required to properly secure a semi-floating brake disc assembly, featuring an 8mm flange and a 12-hole mounting configuration.

Brembo's semi-floating disc design allows the outer friction ring to float slightly relative to the inner hat (bell), which helps reduce heat transfer, minimize thermal distortion, and extend disc life under high-load braking conditions. The D-Bobbin hardware is the critical interface component that enables this floating action while maintaining proper rotor alignment and retention.

Key Features:

• Designed for Brembo GT Series semi-floating brake disc assemblies
• 8mm flange bobbin specification for correct torque and fitment
• 12-hole disc mounting pattern
• Enables proper semi-floating disc movement to reduce thermal distortion
• Single-use hardware — one pack covers one disc assembly
• Genuine Brembo replacement hardware for maintaining factory performance standards

Important: This hardware pack covers one disc assembly only. If servicing both front or both rear discs, two packs are required. This is single-use hardware and must not be reused after the disc has been removed. Reusing worn bobbins can introduce unwanted play, accelerate wear on the disc bell, and compromise braking performance and safety.

Replace with genuine Brembo hardware at every disc service interval to ensure your Brembo big brake kit continues to perform as designed.