R&G engine case slider protector was designed to fit the right hand side (RHS) case cover. Crafted from High Density Nylon for strength, durability and good looks. They compliment the R&G crash protectors perfectly. The covers simply bolt on over the original engine casing. Slimline for maximum ground clearance, ultra lightweight, matte finish and protecting one of the most vulnerable parts of the machine. These could save you hundreds of dollars in the event of an accident ...Special Note: The installation of this product requires you to remove case cover bolts. Be sure when adding this protective cover to your motorcycle to only remove the bolts required to complete the install. Leave the existing cover in place and place this protective puck over the exiting cover and replace the bolts. Otherwise you may be required to replace engine fluids and gaskets.