Vertex Complete Engine Rebuild Kit - Yamaha YZ250 / YZ250X (2003-2024)

Product Description

When it’s time to restore the hard-hitting power of your machine, cutting corners on an engine overhaul isn't an option. The Vertex Complete Engine Rebuild Kit delivers a premium, "one-stop shop in a box" solution, providing nearly every essential internal component needed for a professional, top-to-bottom mechanical restoration. This heavy-duty setup eliminates the guesswork of ordering individual pieces, ensuring total parts compatibility and saving valuable garage time.

Engineered to meet or exceed rigorous factory standards, this kit combines legendary Vertex precision with proven Hot Rods structural components. From a heavy-duty crankshaft built to withstand demanding off-road racing to high-grade seals and standard compression pistons, Moto-House MX brings you a professional-grade package designed to revive your bike's original track performance and maintain long-term reliability. Secure this complete mechanical upgrade today!

Top Features: Vertex Complete Engine Rebuild Kit

• Convenient All-In-One Box: A comprehensive assembly containing nearly all required components for a seamless, professional top and bottom-end rebuild.
• Vertex Premium Piston Setup: Includes a standard compression Vertex piston (#22584B, 66.350mm diameter), high-performance rings, wrist pin, and clips.
• Hot Rods Heavy-Duty Crankshaft: Features a stock-stroke, heavy-duty crank paired with a precision-matched wrist pin bearing for smooth power delivery.
• Comprehensive Bearing & Seal Coverage: Packed with Hot Rods main bearings, a full transmission bearing kit (including output shaft collar and sprocket lock washer), counter balancer bearings, and a water pump rebuild kit.
• Full Gasket Infrastructure: Loaded with a complete Vertex gasket and oil seal kit covering both the top and bottom end for a leak-free seal.

Don't risk a critical engine failure on the track—verify your fitment below and refresh your machine's power plant today!

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2003-2024	Yamaha	YZ 250
2016-2024	Yamaha	YZ 250 X

Frequently Asked Questions

Q: Does this kit cover both the top end and the bottom end of the engine?
A: Yes. This is a complete rebuild kit that includes the crankshaft, main bearings, and transmission bearings for the bottom end, as well as the piston kit, wrist pin bearing, and full gasket kits for the top end.

Q: What piston size is included in this rebuild package?
A: The kit features a high-grade standard compression Vertex piston with a precision diameter of 66.350mm.

Q: Are the transmission bearings included in this box?
A: Absolutely. It comes with a Hot Rods transmission bearing kit which also includes the output shaft collar and sprocket lock washer to ensure a complete transmission refresh.

Expert Pro-Tip: During assembly, ensure you generously pre-lube the new main bearings and crankshaft journals with high-quality 2-stroke oil. Take extra care when seating the transmission bearings to ensure absolute alignment before sealing the cases.

Recommended Pairings:

• Shop Yamaha YZ 250 Performance Parts & Accessories
• Browse High-Performance 2-Stroke Engine Oils
• Browse All Vertex Engine Components

Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.

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