Wiseco K0172X125 Piston Kit Oversize Forged - 1.25mm

The Wiseco K0172X125 is a forged piston kit designed as a high-performance replacement for powersports and off-road engine applications. Built to Wiseco's exacting standards, this kit includes an oversize piston bored to +1.25mm over stock, making it ideal for engine rebuilds where the cylinder has been bored out to restore proper clearances and surface finish.

Wiseco forged pistons are manufactured from aerospace-grade aluminum alloy using a high-strength forging process that produces a denser, stronger grain structure compared to cast alternatives. The result is a piston capable of withstanding the elevated heat and pressure demands of high-performance two-stroke and four-stroke engines.

Key Features:

• Oversize: +1.25mm over standard bore diameter
• Construction: Forged aluminum alloy for superior strength and durability
• Precision machined to tight tolerances for optimal ring seal and oil control
• Designed for performance engine rebuilds requiring overbore fitment
• Part of Wiseco's extensive powersports piston replacement program
• Manufactured in the USA to OEM and beyond quality standards

The K0172X125 kit is engineered to restore lost compression and engine performance in worn powerplants. Whether used in a competitive racing rebuild or a trail-riding restoration, Wiseco's forged construction ensures long service life and consistent power delivery.