Vertex VTKTC22951B-1 Top End Piston Kit Forged Replica Suzuki LT-Z400 KFX400

Professional Grade Top-End Restoration

When your high-performance ATV starts losing its edge, a precision-engineered top-end refresh is the only way to reclaim that factory snap. The Vertex VTKTC22951B-1 Top End Piston Kit, available at Moto-House MX, is a premium forged replica designed to meet or exceed OEM performance standards. This heavy-duty kit provides everything you need for a comprehensive top-end overhaul, ensuring your 400cc powerplant maintains maximum compression and reliability during aggressive trail rides or competitive racing.

Forged from elite 2618 aluminum and subjected to a rigorous T-5 hardening and tempering cycle, this piston is built for extreme durability. To ensure a smooth transition from the garage to the track, the piston skirt is coated with high-tech Molybdenum Disulphite, which significantly reduces friction for a faster break-in time and extended piston life. This complete kit simplifies the rebuild process by including the forged piston, high-performance rings, pins, circlips, a full top-end gasket set, and even a replacement cam chain for a total precision timing refresh.

Top Features: Vertex VTKTC22951B-1 Piston Kit

• Forged 2618 Aluminum: Superior strength-to-weight ratio compared to cast pistons, providing increased durability under high loads.
• Molybdenum Disulphite Coating: High-tech skirt coating reduces friction, heat, and wear for a faster, safer break-in period.
• T-5 Hardening Cycle: Advanced heat-treatment process ensures the piston maintains its structural integrity through thousands of heat cycles.
• All-In-One Rebuild Kit: Includes piston, rings, pins, circlips, a premium top-end gasket set, and a high-strength cam chain.
• OEM Replica Fit: Designed as a direct forged replacement for the factory piston, maintaining the standard 11.3:1 compression ratio.

Expert Pro-Tip

Before assembly, always check your ring end gap in the cylinder bore and ensure the circlip openings are facing downward (6 o'clock position) to prevent them from dislodging under high-RPM vibration.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2003-2008	Suzuki	LT-Z400 QuadSport Z
2003-2006	Kawasaki	KFX400
2004-2008	Arctic Cat	DVX 400

Frequently Asked Questions

Q: Is this kit for a standard bore cylinder?
A: Yes, this kit features an 89.97 mm piston diameter designed specifically for a standard 90.00 mm cylinder bore.

Q: Does this kit include the cam chain?
A: Yes, unlike many standard piston kits, this Vertex Top End Kit includes a new cam chain to ensure your engine timing is fully refreshed.

Q: Do I need to run high-octane fuel with this piston?
A: This forged replica maintains the standard 11.3:1 compression ratio, so you can continue using the fuel recommended by your vehicle’s manufacturer.

Recommended Pairings: Engine Assembly Lube & High-Quality 4-Stroke Oil.

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Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida.