ATHENA P4C0540023020A Top End Piston Kit for KTM 125 SX 2002–2015

Breathe new life into your 125cc 2-stroke engine with this ultimate, all-in-one top-end rebuild kit. Athena has perfectly paired a premium, gravity-cast high-silicon aluminum piston with their industry-leading top-end gaskets for a seamless and highly reliable rebuild. The precision CNC-machined piston ensures flawless fuel flow and optimal flame propagation, while a perfectly smooth profile and forged side relief skirt greatly reduce internal friction for enhanced power and longevity. Accompanied by gaskets that have undergone advanced stress-relieving processes and proprietary surface treatments, this kit guarantees an unbeatable seal under extreme cylinder pressures. Reclaim your factory compression and hit the track with maximum performance!

• Complete top-end solution perfectly pairing a cast 2-stroke piston and comprehensive gasket kit

• Gravity-cast from a specialized high-silicon aluminum alloy for exceptional strength and heat resistance

• Forged side relief skirt reduces weight and internal engine wear

• Precision CNC-machined profile ensures optimal fuel flow and perfect flame propagation

• Advanced gaskets feature proprietary surface treatments and stress-relieving processes for maximum sealing reliability

Includes:

• Cast 2-Stroke Piston (Flat Head)

• Piston Ring (1)

• Biconical Piston Pin / Wrist Pin

• Complete Top End Gasket Kit

• Displacement: 125cc

• Piston Size: 53.94mm

• Pin Dimensions: 15 x 10 x 45mm

• Compression Height: 29.50mm

The ATHENA P4C0540023020A Top End Piston Kit is designed for the KTM 125 SX model years 2002 through 2015. It provides a designated piston kit solution for the motorcycle’s top-end service needs.

This kit is identified by part number P4C0540023020A and is supplied as one unit. Confirm the part number and vehicle application before ordering to help ensure it matches your service requirements.

Manufactured under the ATHENA brand, this top end piston kit is intended for replacement use on compatible KTM 125 SX applications within the listed model-year range.

Features:

• Brand: ATHENA
• Part Number: P4C0540023020A
• Product Type: Top end piston kit
• Application: KTM 125 SX, model years 2002–2015
• Unit of Measure: Each