Replacement brake disc rotors for GMS SLR BBK (330mm /320mm Big brake kit).
 
Discs braking surface features J-hook grooves, providing significantly improved de-dusting capabilities and cracking resistance compared to OEM and aftermarket drilled discs. Discs inner venting vanes are directional, providing supreme heat dissipation.
 
These are the only disc on the market that feature true, fully floating design, which means that aluminum bells are not directly connected to the brake disc rotors as they commonly are, instead they slide within the bobbin grooves, making them much more capable of withstanding extreme thermal expansion without getting warped.
 
The brake disc ring casting is a high content carbon, heat treated alloy, with low expansion properties under heat stress to provide least possible thermal expansion during its operation. Each GMS SLR disc is also dynamically weight balanced to prevent potential vibrations at high speed.
 
Discs sizes are 330 x 28mm front and 320 x 22mm rear.
 
Available as a pair of front only, rear only or as a set.