Wiseco 6641M90 Toyota 2AZ-FE Professional Series Forged Piston 90mm Bore

The Wiseco 6641M90 is a Professional Series Sport Compact forged piston designed for the Toyota 2AZ-FE engine, featuring a 90.00mm bore and 33.25mm compression height with a 0.866 in. pin diameter. This single replacement piston is engineered for serious engine builders demanding no-compromise performance and durability in heavy to severe duty race builds.

Key Features:

• Professional Series Construction: Engineered, forged, and machined in the USA from 2618 high-strength aluminum alloy for superior tensile strength under extreme conditions
• ArmorGlide® Skirt Coating: Wiseco's proprietary coating provides seizure resistance, friction reduction, and quieter engine operation
• Fully Machined Crown Features: Precision-machined crown geometry optimized for the Toyota 2AZ-FE combustion chamber
• Precision Ring Grooves: Anti-detonation groove and additional ring seal features for improved combustion sealing
• Forced Pin Oiling: Ensures consistent lubrication to the wrist pin under high-load race conditions
• Rings and Pins Included: Sold as an individual replacement piston complete with rings and wrist pin (Recommended ring set: 9000XX)
• Made in the USA: Forged and machined at Wiseco's Mentor, Ohio manufacturing facility

Wiseco's Professional Series represents their highest-tier piston line — no-expense-spared components packed with custom-level performance features designed and built to withstand the demands of boosted, high-compression, and race applications. Each piston is CNC-machined to tight tolerances on state-of-the-art equipment, ensuring consistent quality and optimal engine performance.