Description
Stock pistons wear out under high-RPM demands, causing compression loss and power degradation. The Wiseco 824M06640 replaces worn components with a high-silicon aluminum alloy forging that handles sustained heat and load cycles without compromise. Whether you’re racing competitively or pushing your KTM hard on weekends, this piston delivers the durability and responsiveness serious riders need.
This piston fits the 2003-2022 KTM 250 SX and is a direct replacement—installation is straightforward with standard engine rebuild procedures. The ArmorGlide skirt coating reduces friction across the cylinder wall, lowering operating temperatures and extending service intervals. Combined with the Electra-coated crown for superior wear resistance, you’re investing in reliability that matches your riding intensity.
- Bore Diameter: 66.4mm
- Material: High-silicon aluminum alloy
- Crown Coating: Electra-coated
- Skirt Coating: ArmorGlide
- Fitment: 2003-2022 KTM 250 SX
- Installation: Bolt-on replacement
- Design Focus: High-RPM endurance
- Manufacturer: Wiseco
- Part Number: 824M06640
