Wiseco 40229M07700 Forged Piston Kit Standard Bore 76.96mm 13.8:1 Compression

The Wiseco 40229M07700 is a complete forged piston kit designed for standard bore applications at 76.96mm with a high 13.8:1 compression ratio. Featuring Wiseco's Armorglide skirt coating, this kit is engineered for both performance-oriented offroad riders and adventure touring enthusiasts who demand reliable, long-lasting engine components.

Wiseco pistons are forged from high silicon, low expansion aluminum alloy, delivering superior strength, reduced reciprocating weight, improved heat transfer, and extended service life compared to cast alternatives. Each piston receives a diamond-turned finish produced on CNC computer-controlled turning centers, ensuring a precision fit with zero size variation.

Key Features:

• 76.96mm standard bore diameter for direct OEM replacement fitment
• 13.8:1 high compression ratio for improved power output
• Armorglide skirt coating for reduced friction and enhanced wear resistance
• Forged from high silicon, low expansion aluminum for superior strength and heat management
• CNC diamond-turned finish ensures consistent sizing and perfect cylinder wall contact
• Compatible with all cylinder bore compositions — nikasil, cast iron, and steel sleeves
• Manufactured in Wiseco's state-of-the-art facility in Mentor, Ohio, USA

Kit Includes:

• Forged piston
• Piston rings
• Wristpin
• Circlips (Spirolox)

Alternate Part Numbers: 40229PS, 116657, wis40229M07700

Wiseco has been a trusted name in forged piston technology for decades, supplying both high-performance racers and recreational riders with precision-engineered engine components built to outperform and outlast OEM parts.