Extra large 13" / 330mm diameter floating front brake rotor; with caliper adapters. Stock is 11.8" / 300mm OD. Open center with 6.7" BCD. 5-bolt. Cross cut bolt mount holes (cast wheels) (Mount style ''C''). Optimized for OEM radial brake calipers. Kit includes caliper adapters; optimized for OEM radial brake calipers. Brake rotors are manufactured from a special stainless steel alloy and are heat treated. This offers an excellent braking capability with high wear resistance. The material is laser-cut for perfect precision and cross-grind for a perfectly flat surface. OEM replacement reference 41500017. Note: With approval. Check your local MCS dealer or the MCS sales department for exact type of approval and validity on bike model and years on the test report. - Manufactured in OEM quality - Perforated braking surface for reduced noise and good responsiveness- Extremely heat resistant; offering stable braking performance under all conditions- High responsiveness due to increased brake grip- High-strength stainless steel inner part for increased durability with minimized distortion and fading - Black powder coated inner carrier - Suitable for all common brake pads