Bmw R1250Gs 18-21 19 20 Upper Crash Bars Engine Guards Protector Silver? FEATURES: Constructed of robust steel with a 25 mm pipe diameter,reliable protection of important motorcycle Engine parts Thick wall steel tubing guards are designed to add style and help protect the engine from damage. In case of a fall, prevent tipping over and have no degradation in soil and cornering clearance. All maintenance operations are possible without disassembly of the lintel bar. Securely mounts to the main frame without modifications.