Originally Posted by truck6driver
I now nothing about the DR but my XR uses the stock petcock on the IMS tank. Fit was just like the stock tank.
The IMS DR650 tank comes pre-drilled for the oem vacuum two-stem petcock, yet it doesn't fit due to interference with cooling fins.
They do provide a petcock, but it's single-stem and leaves lots of room for the gasket to pinch, squish, and leak.