WISECO PISTON PK 93-99 RMX250 PROLITE 67.0MM PK1339 Offroad 2-Stroke &gt; ENGINE &gt; Pistons &gt; PK KIT Size: 67 Application: 93-99 RMX250 PRO-LITE 67.0MM (642M) Wiseco Piston PK KIT PK1339.