Cylinder Works Standard Bore Cylinder Kit (422-50014K02 / CW50014K02) | KTM / Husqvarna / GasGas 125 (2018-2023)

Complete high-performance standard bore cylinder kit engineered to deliver a comprehensive, ready-to-install top-end refresh for modern high-revving two-stroke motocross and off-road engines. Features a premium cast aluminum cylinder finished with a durable nickel silicon carbide (NSC) electroplate bore and diamond honed to exact specifications, paired with a matching Vertex piston kit, top-end gaskets, and wrist pin bearing to ensure optimal ring seal, reduced friction, and superior heat dissipation under aggressive racing conditions.

Specs & Details

• Manufacturer Part Number: 422-50014K02
• Alternative Part Number: Cylinder Works CW50014K02
• Kit Type: Complete Standard Bore Cylinder, Piston, Gasket, and Bearing Kit
• Bore Size: Standard (54.00 mm)
• Material & Construction: Cast aluminum cylinder with nickel silicon carbide plating, matched with a Vertex #23928 piston
• Two-Stroke Vehicle Fitment

TSO Garage Note

There's the updated revision for the later second-generation carbureted Austrian 125 block. While the earlier 2016–2017 kits handled the introductory layout, part number 422-50014K02 picks up right where they left off to cover the 2018–2022 KTM/Husqvarna and 2021–2023 GasGas variants. Bundling the correct Vertex piston configuration, gaskets, and wrist pin bearing, it drops straight into the crankcases without machine work, making it an efficient way to restore peak compression and crisp throttle snap.