Wiseco K578M8625 Professional Series Piston Set Nissan RB25DET 86.25mm Bore

The Wiseco K578M8625 Professional Series Piston Set is a premium forged piston kit engineered specifically for Nissan RB25DET engines. This complete 6-piston set features an 86.25mm bore size with 31.50mm compression height and 0.827-inch pin diameter, delivering race-proven performance for serious builders and high-performance applications.

Professional Series Features:

• Forged from 2618 aluminum alloy in the USA for superior tensile strength and durability
• ArmorGlide® skirt coating provides seizure resistance, reduces friction, and ensures quieter operation
• Fully machined crown design optimizes combustion efficiency
• Dome-style piston with four valve reliefs for proper valve clearance
• 1.240-inch compression height with -14.00cc piston head volume
• Premium piston rings included: 1.0mm steel top ring with gas nitride facing and 1.2mm cast iron second ring

Complete Kit Includes: Six precision-forged pistons, high-quality piston rings, wrist pins, and circlips. Designed for heavy to severe duty race builds where maximum performance and reliability are essential. Professional Series pistons represent Wiseco's no-expense-spared approach to racing piston technology.