All Vertex Pistons Feature Piston I Kpl. 250 Racing 2001 59830007000 I. Piston Ii Kpl. 250 Racing 2001 59830007000 II. Piston Pin Bolt 20X15,8/12X50 59030033000. - All pistons are heat treated with a T-5 or T-6 hardening and tempering cycle.
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