"Mechanical Cruise Assist Handlebar End Weight

Looks like a bar end weight

Spring-loaded tensioner inside holds the throttle in position once you set it with your little finger

Easy throttle shut-down - just roll the throttle forward to disengage

Optional matching clutch bar end weight available separately

For use with OEM or K ryakyn ISO , Flame or Transformer grips

Proper installation may require cutting a 3/8 hole in the end of an OEM grip. Handlebars must have open ends

Installation may require cutting or drilling a 5/8 hole in the end of grips.