Yea , you just have to really pay attention when reading it , i just always thought the stock was 4mm , but either way , with the 3mm or 4mm , i always run mine in the forward position , i guess the rear position is for shorter than average people to use , since it always feel like i am going to fall over the front when riding a bike setup that way , as the bars are in my lap
But the aftermarket one i have is definitely 4mm offset , which is what i like on the X along with the Pastrana/FMX bars
But on the R , since i ride a lot of track , as well as off-road , it feels better with the RC High bars with the stock clamp (forward) with the 1 1/8" adapter , its not too tall , but its tall enough so i don't have to bend my back as much , which lessens the beating somewhat
When i used the 30mm risers , it was ok for desert , but if you rode any hills , it felt like you were going to fall off the back of the bike going uphill , and was actually uncomfortable going uphill