Wiseco PK1886 High-Compression Forged Piston Kit 88mm 14.5:1 CR KTM 350SX-F

The Wiseco PK1886 is a high-compression forged piston kit designed for the KTM 350 SX-F, featuring a standard 88.00mm bore and an aggressive 14.5:1 compression ratio engineered to deliver maximum power output in demanding race conditions. The kit includes the forged piston, high-performance ring set, wrist pin, and circlips — everything needed to complete a top-end rebuild.

ArmorGlide Skirt Coating

The piston skirt is treated with Wiseco's proprietary ArmorGlide dry-film lubricant coating, which reduces friction and operating noise while allowing a tighter piston-to-bore fit for improved ring seal and sustained horsepower output.

Key Features:

• 88.00mm standard bore with 14.5:1 high-compression ratio
• ArmorGlide coated skirt — reduces friction, improves wear resistance, and allows tighter bore fitment
• Dedicated aerospace-alloy forging — superior strength-to-weight ratio vs. cast alternatives
• High-performance ring set and alloy wrist pin included for extended service life
• Forged in-house in the USA — full manufacturing control from raw billet to finished part
• Application-specific piston profile optimized for the KTM 350 SX-F powerplant

Unlike cast pistons, Wiseco's forged construction compresses and aligns the alloy's grain structure to the shape of the part, producing superior mechanical properties including impact resistance, fatigue strength, and durability under sustained high-RPM race use. This is the same forged piston technology trusted by top-level MX race teams.