Motorcycle Piston Ring For Kawasaki EX250 Ninja 250R 86-07 EL250 KLE250 GPX250R ZZR250 62MM +25 +50 Fit For Kawasaki EX250 Ninja 250R 1986 to 2007 EL250 1990 to 1996 KLE250 GPX250R ZZR250 motorcycles piston ring kits with 62mm base bore +25 +50 oversize options machined compression rings oil control rings match corresponding oversize cylinder bore to restore stable compression reduce excessive oil consumption temperature anti abrasion material withstands long time RPM daily riding to cylinder wall piston from wear accurate ring gap clearance prevents carbon deposit buildup ring sticking failure inside engine cylinders two oversize specifications satisfy different cylinder wear overhaul needs for one stop engine repair work