Adam writes "I am in Australia. I weigh 80 kilo without gear. This is for pure bush/scrub/hill-climbing and mud rainy season application. Are there various types/ratios Links that you produce, or is there just one."
For the 2001 YZ426F there is just one YamaLink: Click HERE
And you must be properly sprung for the YamaLink's extra leverage: Click here for more info on that.