Piston Kit 09-18 SX50 39.5mm C, Wossner 8262DC KTM MX

This Wossner forged piston kit with a 39.52mm bore (+0.02mm oversize) is intended for KTM SX50 models from 2009 to 2018. Built for reliability and high-performance output in small-capacity two-stroke engines, this German-manufactured piston is designed to optimise thermal efficiency and structural resilience through precision engineering and an elliptical profile.

Features

• Forged construction for superior strength and endurance

• Optimised heat dissipation to the cylinder walls for reliable performance

• Elliptical design ensures even pressure distribution and resists piston collapse

• Made in Germany

Specifications

• Bore: 39.52mm

• Actual Bore: 39.47mm

• Engine Displacement: 50 cm³

• Stroke: 40.00mm

• Clearance: 0.04mm

• Compression Ratio: 2-stroke (Wossner and OEM)

• Compression Height: 21.60mm

• Lock Part Number: CW12

• Pin Part Number: WP101

• Ring Set Part Number: RSB2950

• Rod Part Number: P2053

Cross-Reference OEM Part Numbers

• 45230007000 I

Vehicle Fitments

• 2009 KTM SX50

• 2010 KTM SX50

• 2011 KTM SX50

• 2012 KTM SX50

• 2013 KTM SX50

• 2014 KTM SX50

• 2015 KTM SX50

• 2016 KTM SX50

• 2017 KTM SX50

• 2018 KTM SX50