Wiseco PK1885 KTM 350SX-F Top End Piston Kit 88mm 13.5:1 Compression

The Wiseco PK1885 is a complete top end piston kit engineered specifically for the KTM 350SX-F, featuring a stock 13.5:1 compression ratio and an 88.00mm bore. Designed and forged entirely in-house at Wiseco's facility in Mentor, OH, this kit delivers the precision and durability demanded by serious off-road and motocross riders.

Unlike cast pistons, Wiseco's dedicated forgings feature a condensed, aligned grain structure that produces superior mechanical properties, impact resistance, and fatigue strength. The result is a piston that maintains performance and ring seal long after cast alternatives begin to fail.

Key Features:

• 88.00mm bore — standard stock bore for KTM 350SX-F applications
• 13.5:1 compression ratio — stock compression for reliable, broad-powerband performance
• ArmorGlide skirt coating — high-tech lubricant reduces friction, allows tighter bore fit for improved ring seal and reduced piston rock
• Forged in the USA — engineered and manufactured at Wiseco's Mentor, Ohio facility
• Optimized strength-to-weight ratio — dedicated forging design maximizes performance without unnecessary mass
• Includes complete top end gasket kit — piston, rings, wrist pin, circlips, and gaskets included for a full top end rebuild
• High-performance ring kit — precision-fit rings for maximum sealing and longevity
• Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions

The Wiseco PK1885 is the ideal choice for a reliable, race-ready top end rebuild on the KTM 350SX-F. Whether restoring worn components or freshening up a competition engine, this kit provides everything needed for a complete, confidence-inspiring rebuild.