PISTON KIT 01-08 KTM50 SX, WOSSNER 8225DB FORGED MX

This Wossner forged piston kit with a 39.51mm bore (+0.01mm oversize) is designed for KTM SX50 models. While the bore specification aligns with models from 2001 to 2008, the product description indicates a fitment for 2009 to 2018. Engineered for two-stroke performance, this German-made piston ensures excellent thermal transfer and structural reliability through its elliptical design and high-quality materials.

Features

• Forged construction delivers superior durability and resistance to mechanical stress

• Optimised heat transfer from the combustion chamber to the cylinder walls

• Elliptical design ensures even load distribution, reducing localised pressure and the risk of piston collapse

• Manufactured in Germany

Specifications

• Bore: 39.51mm

• Actual Bore: 39.46mm

• 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: RSB3950

Cross-Reference OEM Part Numbers

• Not specified

Vehicle Fitments

• 2001 KTM SX50

• 2002 KTM SX50

• 2003 KTM SX50

• 2004 KTM SX50

• 2005 KTM SX50

• 2006 KTM SX50

• 2007 KTM SX50

• 2008 KTM SX50

• 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