Wössner 74mm forged piston kit designed for Honda TRX300X and TRX300EX ATV models. Engineered for optimal combustion chamber heat transfer and uniform load distribution, reducing localized pressure and preventing piston collapse. Made in Germany for durability and performance.

Features

• Forged construction for superior strength and durability


• Optimized heat transfer to cylinder walls


• Elliptical design ensures uniform bearing surface under heat expansion


• Reduces localized pressure and evenly distributes thrust loads


• Prevents piston collapse under high-stress conditions

Specifications

• Bore Size: 74mm


• Wössner Part Number: 8675DA


• Lock Part Number: CW17


• Pin Part Number: WP090


• Ring Set Part Number: 740XDS


• Displacement: 282 cm³


• Stroke: 65.50mm


• Clearance: 0.06mm


• Compression Ratio: OEM (12.00:1)


• Dome Volume: +6.30 cm³


• Compression Height: 23.30mm

Cross-Reference OEM Part Numbers

• Not specified

Vehicle Fitments

• Honda TRX300X (2009-2012)


• Honda TRX300EX (1993-2008)