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This Wossner forged piston kit features a 95mm bore size (94.95mm actual) and is a standard fitment for KTM SX-F450 models from 2013 to 2018, as well as multiple Husqvarna 450 models. Manufactured in Germany, the piston includes a two-ring configuration and an elliptical design to promote even load distribution and superior heat transfer. It is engineered for durability and consistent performance under demanding conditions.
Features
Forged piston with two-ring design for enhanced strength and reliability
Elliptical shape distributes thrust loads evenly under heat expansion
Optimised for efficient combustion heat transfer to cylinder walls
Manufactured in Germany
Specifications
Bore Size: 95mm (actual 94.95mm)
Displacement: 449 cm³
Stroke: 60.80 mm
Clearance: 0.05 mm
Compression Ratio (Wossner): OEM
Compression Ratio (OEM): 12.60:1
Dome Volume: +1.00 cm³
Compression Height: 22.80 mm
Lock Part Number: CW19
Pin Part Number: WP071
Ring Set Part Number: 950ADS-2
Cross-Reference OEM Part Numbers
78930007300
40073M09500
Vehicle Fitments
KTM SX-F450 (2013–2018)
Husqvarna FC450 (2014–2015)
Husqvarna FC450 (2016–2020)
Husqvarna FX450 (2017–2020)
Husqvarna FS450 (2015)
Husqvarna FS450 (2016–2020)