Brake Disc front For Yamaha TDM 850 91-01 TRW Lucas 300mm 64mm 80mm 8.5mm 5mm 10mm Floating \n\n (Please Check The Compatibility As The Product Fits Several Bikes)\n\nTechnical Data: \n\nOuter Diameter :300 mm \nInner Diameter :64 mm \nPCD :80 mm \nNumber of mounting bolts :6 \nBolt hole diameter :8.5 mm \nThickness :5 mm \nOffset :10 mm \nConstruction :Floating \nManufacturer :TRW \n\nUnderstanding the Motorcycle Brake Disc and the Benefits of Brake Discs\n\n A Yamaha TDM 850 brake disc, also known as a rotor, is a crucial component of your Yamaha's braking system. It is a flat, circular metal disc attached to the wheel. When you apply the brakes, the brake pads clamp onto the brake disc, creating friction that slows down and eventually stops your TDM 850. This process is essential for controlling your Yamaha's speed and ensuring your safety on the road.\n\n Function of a Brake Disc on TDM 850\n\nThe primary function of the brake disc on TDM 850 is to provide a surface for the brake.