I have a Hammer Head one for a YZ 250 (Also need to buy a Yamaha bolt) on my 2005 and 2011 GasGas. It is spaced out slightly more and I needed to rotate the master cylinder slightly by opening up the mounting holes. The lever is very rigid and gives a good braking feel. The pivot distance is slightly shorter which gives a stronger brake. Took some work but it is now a good install and better than stock. By no means an easy bolt on.