This ad is for a brand new Yamaha RZ350 idler gear bushing to replace the OEM bushing that generally has a sloppy fit after years of abuse. Just press out your old bushing and press this one in and you won’t have a sloppy fitting idler gear anymore. Our bushing contains bronze so it will not ruin the end of your transmission shaft. Also comes with an idler gear circlip. Ad is for bushing and circlip only, no gear.