Shimano XTR RT-MT905 Disc Brake Rotor - 180mm | 6-Bolt
What Is the Shimano XTR RT-MT905 Rotor and What Makes the 6-Bolt Format Different?
The RT-MT905 is Shimano's XTR-tier 180mm disc brake rotor in the traditional 6-bolt mounting format, built with the same ICE Technologies Freeza construction used across the XTR rotor lineup. ICE Technologies layers the rotor material to manage heat dissipation at the source: an aluminum core layer sandwiched between two stainless steel braking surfaces conducts heat away from the pad contact zones and into the rotor body, while the finned aluminum carrier of the Freeza design extends that heat path outward and into the airflow around the spinning rotor. At 180mm, the RT-MT905 provides the largest diameter available in the XTR rotor range, maximizing braking leverage and thermal mass for the most demanding trail and all-mountain riding conditions where long technical descents put sustained heat loads on brake systems. The 6-bolt interface uses standard ISO 6-bolt mounting, which is compatible with virtually all disc brake hubs and does not require any adapter or lockring tool beyond a standard T25 Torx wrench.
The RT-MT905 180mm 6-bolt is compatible with Shimano XTR, XT, and other hydraulic disc brake systems that accept a standard-thickness rotor, and mounts directly to any ISO 6-bolt disc hub. For riders building or upgrading a wheel system with 6-bolt hubs who want the highest-spec Shimano rotor available in the largest standard diameter, with ICE Technologies and Freeza heat dissipation, the RT-MT905 is the XTR flagship 6-bolt choice.
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Shimano XTR RT-MT905 Disc Brake Rotor - 180mm | 6-Bolt
Shimano XTR RT-MT905 Disc Brake Rotor - 180mm | 6-Bolt
What Is the Shimano XTR RT-MT905 Rotor and What Makes the 6-Bolt Format Different?
The RT-MT905 is Shimano's XTR-tier 180mm disc brake rotor in the traditional 6-bolt mounting format, built with the same ICE Technologies Freeza construction used across the XTR rotor lineup. ICE Technologies layers the rotor material to manage heat dissipation at the source: an aluminum core layer sandwiched between two stainless steel braking surfaces conducts heat away from the pad contact zones and into the rotor body, while the finned aluminum carrier of the Freeza design extends that heat path outward and into the airflow around the spinning rotor. At 180mm, the RT-MT905 provides the largest diameter available in the XTR rotor range, maximizing braking leverage and thermal mass for the most demanding trail and all-mountain riding conditions where long technical descents put sustained heat loads on brake systems. The 6-bolt interface uses standard ISO 6-bolt mounting, which is compatible with virtually all disc brake hubs and does not require any adapter or lockring tool beyond a standard T25 Torx wrench.
The RT-MT905 180mm 6-bolt is compatible with Shimano XTR, XT, and other hydraulic disc brake systems that accept a standard-thickness rotor, and mounts directly to any ISO 6-bolt disc hub. For riders building or upgrading a wheel system with 6-bolt hubs who want the highest-spec Shimano rotor available in the largest standard diameter, with ICE Technologies and Freeza heat dissipation, the RT-MT905 is the XTR flagship 6-bolt choice.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
What Is the Shimano XTR RT-MT905 Rotor and What Makes the 6-Bolt Format Different?
The RT-MT905 is Shimano's XTR-tier 180mm disc brake rotor in the traditional 6-bolt mounting format, built with the same ICE Technologies Freeza construction used across the XTR rotor lineup. ICE Technologies layers the rotor material to manage heat dissipation at the source: an aluminum core layer sandwiched between two stainless steel braking surfaces conducts heat away from the pad contact zones and into the rotor body, while the finned aluminum carrier of the Freeza design extends that heat path outward and into the airflow around the spinning rotor. At 180mm, the RT-MT905 provides the largest diameter available in the XTR rotor range, maximizing braking leverage and thermal mass for the most demanding trail and all-mountain riding conditions where long technical descents put sustained heat loads on brake systems. The 6-bolt interface uses standard ISO 6-bolt mounting, which is compatible with virtually all disc brake hubs and does not require any adapter or lockring tool beyond a standard T25 Torx wrench.
The RT-MT905 180mm 6-bolt is compatible with Shimano XTR, XT, and other hydraulic disc brake systems that accept a standard-thickness rotor, and mounts directly to any ISO 6-bolt disc hub. For riders building or upgrading a wheel system with 6-bolt hubs who want the highest-spec Shimano rotor available in the largest standard diameter, with ICE Technologies and Freeza heat dissipation, the RT-MT905 is the XTR flagship 6-bolt choice.











