This Wiseco Professional Series piston set is forged from 2618 aluminum for Mitsubishi 4B11 EVO X engines. Each of the 4 pistons has an 86.50 mm bore and a 33.25 mm compression height with a -8cc dish. Professional Series pistons are aimed at heavy to severe duty race builds.

Wiseco K698M865 Piston Set Features:

• Made for Mitsubishi 4B11 EVO X engines
• 86.50 mm bore diameter with a 33.25 mm compression height
• -8cc dish volume
• Forged from 2618 aluminum alloy with a strutted forging design
• ArmorGlide skirt coating for reduced friction, scuff resistance and quieter operation
• 0.9055 in. H13 Tool Steel floating wrist pin included
• Piston rings included: 1.0 mm top, 1.2 mm second and 2.8 mm oil ring
• Fully machined crown with precision ring grooves and an anti-detonation groove
• Forced pin oiling feeds the wrist pin bore
• Set of 4 pistons