ATHENA P4C0664045001B Top End Piston Kit for KTM 250 SX 2007–2016

Breathe new life into your 250cc 2-stroke enduro machine 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 specialized molybdenum disulfide skirt coating greatly reduces 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 trails 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

• Molybdenum disulfide skirt coating drastically reduces friction 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 (Domed Head)

• Piston Rings (2)

• Standard Piston Pin / Wrist Pin

• Circlips

• Needle Bearing

• Complete Top End Gasket Kit

• Displacement: 250cc

• Piston Size: 66.35mm (B-Size)

• Pin Dimensions: 18 x 13 x 56mm

• Compression Height: 38.10mm

• Compression: Standard

The ATHENA P4C0664045001B Top End Piston Kit is designed for KTM 250 SX models from 2007 through 2016. This replacement kit is identified for top-end engine service on the specified motorcycle application.

Manufactured by ATHENA, this piston kit provides a product-specific solution for maintaining or rebuilding the top end of a compatible KTM 250 SX engine. Verify the motorcycle model and year before ordering to help ensure the correct application.

Supplied as one unit, the kit is listed under unit of measure EA. Refer to the manufacturer’s installation guidance and inspect related engine components during service.

Features:

• Brand: ATHENA
• Part Number: P4C0664045001B
• Product Type: Top end piston kit
• Application: KTM 250 SX, 2007–2016
• Unit of Measure: EA