I've seen -50mm ones advertised but I've never met, or heard, or anyone using them. Most common are -35mm links.

The trouble with going too low (-50mm) is that the swingarm ends up being too flat (parallel to the road) and the axle bolt rises above the output shaft of the gearbox sprocket and this can (and does) cause the swingarm underside to be eaten away by the chain.

Remember as well that, changing the links because the suspension is too hard and you can't get the right sag setting, is only masking the real issue... Your spring rates are all wrong for your body mass and they'll still be wrong with lowering links!

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