Wossner forged pistons are engineered for enhanced strength and optimal thermal conductivity, facilitating efficient combustion chamber heat transfer to the cylinder walls. The elliptical design ensures a uniform bearing surface during thermal expansion, minimizing localized stress and evenly distributing thrust loads to prevent piston collapse. This 97.00mm bore piston (96.96mm actual size) is designed specifically for high-performance Yamaha engines and is manufactured in Germany.

Features

• Forged construction for enhanced durability


• Engineered for optimal heat transfer


• Elliptical design for uniform load distribution


• Made in Germany

Specifications

• Bore Size: 97.00mm (actual 96.96mm)


• Displacement: 449 cm³


• Stroke: 60.80mm


• Clearance: 0.04mm


• Compression Ratio: OEM (12.50:1)


• Dome Volume: -4.90 cm³


• Compression Height: 24.00mm

Cross-Reference OEM Part Numbers

• 1SL-11631-00-00

Vehicle Fitments

• Yamaha YZF 450 2014–2015