G2 Ergonomics 60-600 - Jimmy Twister Throttle Tube Bearing Machined from 6061 aluminum in the USA! Self-lubricating Delrin bushings at each end of tube eliminate aluminum-to-aluminum contact and provide an ultra-smooth feel. Included cam is removable and can be replaced with alternate cams (sold separately) to fine tune control. Fits inside the stock throttle housing to stock cables. Removable end cap for simple handguard installation.