Shimano RT-MT800 Center Lock Ultegra/GRX/XT Brake Rotor with Internal Lock Ring

The Shimano RT-MT800 brake rotor is a Center Lock rotor for riders using Ultegra, GRX or XT components on their disc brake bike. It includes an internally splined lockring for fitting to the hub.

• Fits Center Lock hubs with a 9/10 mm quick release or 12 mm thru-axle
• Internally splined lockring included, so you do not need to buy it separately
• Two-component rotor: aluminium core between two layers of stainless steel
• Works with organic or sintered pads
• Choose 140 or 160 mm. A 15 or 20 mm axle requires the SM-HB20 lockring

Technical specifications

• Diameter: 140 mm, 160 mm
• Lockring type: Internal splines
• Material: Stainless steel and aluminium (two-component rotor, aluminium core between two layers of stainless steel)
• Mount: Center Lock
• Compatible pads: Organic or sintered
• Hub compatibility: Quick release (9/10 mm) and 12 mm thru-axle; 15 mm and 20 mm thru-axles require the SM-HB20 lockring
• Box contents: 1 SHIMANO RT-MT800 brake rotor; 1 internally splined lockring

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.