Yamaha Genuine Parts & Accessories sent us the following information on GYTR:

Features:

• Increase the diameter of your front brake rotor to 270mm (250mm standard)

• New for 2012, the GYTR front brake rotor is a floating wave design

• Adds exceptional stopping power to your bike

Part number/Rec. retail price/fitment:
GYT-ROTOR-27-10 $159.89 (inc. gst)
01-12 YZ250F/WR250F, 03-12 YZ450F/WR450F, 98-12 YZ125/250

For use in conjunction with the below caliper brackets:
GYT-BRACK-YZ-25 $99.00 (inc. gst)
07-12 YZ250F, 08-12 YZ125/250/450F

GYT-BRACK-YZ-45 $99.00 (inc. gst)
01-12 WR250F/450F, 98-07 YZ125/250, 03-07 YZ450F, 01-06 YZ250F

For further information contact Yamaha Motor Australia via email [email protected] or on the web at http://yshop.yamaha-motor.com.au.