The BMP Rear Cush Drive Hub is a replacement for your 2014-2020 Grom or 2019-2020 Monkey’s OEM Drive Hub. Made with a full billet CNC design, this part gives you 3 color options to add some personalization to your bike. This is an excellent addition for those of you that are looking for a stronger drive hub to support more power or if you are just looking to add color for a show build.