Wiseco CK207 Forged Piston Kit Yamaha Oversize - YZF-R6 2mm

The Wiseco CK207 is a complete forged piston kit designed for the Yamaha YZF-R6, offered in a +2mm oversize bore specification. Engineered for high-performance street and track use, this kit delivers the strength and precision demanded by serious riders and racers alike.

Key Features:

• Forged High-Silicon Aluminum Construction: Each piston is forged from high-silicon, low-expansion aluminum alloy, providing superior strength, reduced reciprocating weight, improved heat transfer, and extended service life compared to cast alternatives.
• Diamond-Turned CNC Finish: Machined on CNC turning centers with a diamond-turned finish, ensuring precise sizing with zero variation — suitable for installation in cast iron, chrome, Nikasil, and boron composite cylinder bore compositions.
• +2mm Oversize: Ideal for engines with worn or damaged cylinders, this oversize piston restores proper bore clearances and extends engine life. Compatible with resleeved chrome, Nikasil, and boron composite cylinders.
• Complete Kit: Includes forged piston(s), rings, wrist pin, and circlips — everything needed for a complete piston replacement.
• OEM-Quality Tolerances: Manufactured to exacting tolerances in Wiseco's computerized production facility, delivering consistent performance for both competitive racers and recreational enthusiasts.

Wiseco has been a trusted name in forged pistons for powersports, motorsports, and racing applications for decades. The CK207 piston kit is a direct upgrade path for Yamaha R6 engines undergoing a bore and rebuild, offering durability and performance that OEM cast pistons simply cannot match.