Wiseco Top End Bearing for Kawasaki KX-250 78-07 KDX-250 91-94 Offroad & ATV &gt; ENGINE &gt; Piston Rings Clips & Bearings &gt; Replacement Circlips/Wristpin/Bearing Application: 18x22x23.6 Caged Needle Bearing Wiseco Piston Replacement Circlips/Wristpin/Bearing B1022.