Harder KranK durometer bushings (93a) for heavier-weight riders (over 140lbs) as harder durometer bushings allow for a nice tight set-up
Softer KranK durometer bushings (87a) for medium-weight riders (75 - 140lbs) as these medium/soft durometers are also for those looking for a looser setup in the RoadSide position when coupled with a harder duro bushing.
PLEASE NOTE: The KranK Formula has quite a bit of adjustability - so order accordingly! You can tighten the kingpin nut up to two full turns to 'harden' or 'loosen' the duro.
Stiffer bushings will result in a more resistant board, which can be an advantage when performing tricks - medium weight riders may benefit from mixing duro's roadside & boardside. (See guide links below)