Review on MATI TRX450ER 2006 2014 2004 2009 43251 HP1 003 by Anthony Lanka

Although the rotors are similar to the OEM rotors and four times cheaper, they don't live up to the advertising. First, the installation diameter of the round center is much larger than that of the holder. Second, the mounting holes are much larger than the shoulder bolts that hold the rotor to the mount. As a result, the rotor vibrates radially. Third, the rotor is .030" thicker than the original rotor (.187") compared to 4mm (.157") and will not accept new pads once installed. I spent an additional 40 minutes grinding the new pads, so that they fit on the thicker disc.