Topar Racing SKC-01 CaseSaver Countershaft Guard 2004-2006 SUZUKI RMZ250 2004-2018 KAWASAKI KX250F CASE SAVER - COUNTERSHAFT GUARD, CNC MACHINED BILLET ALUMINUM Superior appearance and unsurpassed protection for your Crankcase. Replace the weak plastic sprocket guard that came on the bike from the factory.