R&G's engine case slider was designed to fit the left hand side (LHS) engine case cover. Crafted from High Density Nylon for strength, durability and good looks, they complement the R&G crash protectors perfectly. The covers simply bolt on over the original engine casing. Featuring a slim profile for maximum ground clearance and ultra lightweight construction to minimize adding unnecessary bulk, these bad boys are built to take your beatings. A slick matte finish with a rugged build ensures you're protecting one of the most vulnerable parts of the machine without having to sacrifice style. These sliders could save you hundreds of dollars in the event of an accident!Special Note: The installation of this product requires you to remove the 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 assembled and place this protective puck over the existing cover and replace the bolts. Otherwise you may be required to replace engine fluids and gaskets.