I measured the stroke length by picking my mounting points and at left & right full lock took measurements from both points, the difference between the two measurements is the stroke length. I just got my dampers, mounting clamps and fork braces from Fast from the past today. I ordered ODM2000 and after loose fitting it it's the perfect length, I mounted it under the bottom triple on the right fork leg and onto the left side of the frame just above the cross brace on the front of the frame. Higher than but near plug #1, so I can adjust while riding if need be. Will report back how it all works out, so far the quality of the parts is great and dealing with Jim at FFTP was smooth as silk.