Fit perfectly and are pretty much same length as the OEM levers, except they are adjustable for my short fingers. These are the 177mm levers - I think the shorties are @144mm.
Remove the 10mm nut under the lever; unscrew the pivot shaft & pull it out.
Grease the tip of the brake lever where it contacts the master cylinder, grease the screw/pivot/shaft and reassemble. They have a nice solid 'click' when adjusters are set.




On my scooter....


Fish