Wiseco 6580M875 Pro Tru Sport Compact Forged Piston 87.5mm Bore with Rings & Pin

The Wiseco 6580M875 is a Pro Tru Sport Compact Series forged replacement piston featuring an 87.5mm (3.445 in.) bore, sold individually with rings and pin included. Built on Wiseco's deep experience in race-winning sport compact engine development, this piston delivers forged strength and precision machining at an outstanding value.

American-Made Forged Construction:

• Forged and CNC-machined in Mentor, Ohio by skilled craftsmen using state-of-the-art equipment
• Dedicated forgings specific to the final piston shape produce a stronger, lighter piston than industry standards
• Advanced heat-treating and finishing processes ensure durability and performance reliability

Complete Kit — Rings & Pin Included:

• Plasma moly pre-gapped ring package: 1/16 in. / 1/16 in. / 3/16 in. configuration
• Ring package provides excellent combustion seal, friction reduction, and long service life
• Recommended ring set cross-reference: 8750XX
• Sold as an individual replacement piston — ideal for single-cylinder replacement builds

Performance-Tuned Design:

• Crown thickness and ring lands engineered to handle power adders including turbochargers, superchargers, and nitrous oxide
• Available in multiple dome volumes, allowing engine builders to dial in their exact target compression ratio
• ArmorGlide skirt coating reduces friction, tightens dimensional tolerances, and extends piston and cylinder life
• Piston skirt profiles minimized for reduced rock, tight bore clearances, and long skirt life

The Wiseco 6580M875 Pro Tru Sport Compact piston is the ideal choice for performance engine builders seeking a forged, USA-made piston that delivers race-level construction quality without the premium price tag.