I will first point out that most of these factors can be
corrected, with enough effort. KuryAkyn or any other plastic
or metallic grip will not work. Grips with no flange at the
outboard side may slip more than you like, but usually work fine.
The collar must engage soft, grippy rubber. Handguards that
attach between the weight and the grip are right out. Some old
Piaggio scooters, which have no handlebar inside their throttle
sleeves, cannot be fit with our throttle locks.