With the popularity of the MT-09 as a stunt bike there's plenty of guys pushing the boundaries. This is where any weak points will show up, one part that has been known to fail is the cast aluminium rear tank mount, We're sure Yamaha never intended these to cop the kind of abuse that stunt riding can impose on this part. So we have come up wih this CNC machined Billet replacement item. Our tank mount averages about 8mm thick whereas the stock mount is down to 3-4mm thick in some areas. We use high strength heat treated billet alluminium vs the stock cast item. Our tank mount is a direct bolt on replacement with no other modifications necessary & is only 60g heavier that the stock item.