G2 Ergonomics Tamer "Progressive Shaped" Throttle Tube YZF WR KXF RMZ 40-4Y-HYK Progressive-shaped throttle provides ultimate control!! Fits up with stock throttle housing and cables! Machined from 6061 aluminum in the USA! Delrin bushings eliminate aluminum-to-aluminum contact for a ultra-smooth feel! Removeable end cap for simple handguard installation!