Vertex WR00008 Engine Complete Rebuild Kit – Yamaha YZ250F 2016-2018

VERTEX WR00008 Engine Rebuild Kit — 2016-2018 Yamaha YZ250F

Product Description

When your high-performance 4-stroke package begins to lose its crisp throttle response or compression drops, don’t cut corners with a piecemeal overhaul. The VERTEX WR00008 Engine Rebuild Kit offers a comprehensive, heavy-duty solution to completely refresh your machine from the inside out. Engineered to meet or exceed strict OEM specifications, this all-in-one overhaul package eliminates the guesswork of sourcing individual parts and guarantees that every internal component matches perfectly. Designed specifically to handle the high-RPM demands of aggressive off-road racing, this kit restores factory-level power, reliability, and track performance.

Every element of this premium kit is selected for maximum structural integrity and longevity. From the precision-balanced crankshaft assembly to the standard-compression piston kit, this package delivers an exact mechanical fit for your power plant. By pairing a complete premium gasket set, high-durability main bearings, a fresh cam chain, and complete transmission bearings into a single 12.3 lb heavy-duty box, VERTEX ensures you have every crucial wear item right on your workbench. It is the ultimate choice for professional racers and dedicated mechanics who demand an uncompromising rebuild that lasts.

Top Features: VERTEX WR00008 Engine Rebuild Kit

• Comprehensive Engine Overhaul: All-in-one kit handles both top and bottom-end restoration, maximizing efficiency and performance during assembly.
• Standard Compression Piston Kit: Includes a precision-machined piston designed to maintain your factory power curve and OEM-spec compression ratios.
• Complete Bearing Protection: Packed with premium main bearings, transmission bearings, and counter balancer bearings to reduce friction and shaft play.
• Precision Gaskets and Seals: Comes with a complete engine gasket kit, high-grade oil seals, and a dedicated countershaft bushing/seal setup to prevent fluid leaks.
• Robust Components Finish: Features bare-metal cast, forged, and treated alloy components engineered to withstand extreme 4-stroke operating temperatures.

Please review the detailed application data below to confirm absolute vehicle compatibility before initiating your engine teardown.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2016 - 2018	Yamaha	YZ250F

Frequently Asked Questions

Q: What components are included in this kit?
A: This complete kit includes: Crankshaft, Piston Kit, Complete Engine Gasket Kit with Oil Seals, Main Bearing and Seal Kit, Water Pump Rebuild Kit, Transmission Bearing Kit, Countershaft Bushing/Seal Kit, Cam Chain, and Counter Balancer Bearing Kit.

Q: Is the piston in this kit a high-compression or standard-compression design?
A: This kit includes a standard compression piston kit, which restores your engine to its factory-designed specifications and reliability without requiring race gas or modified ignition timing.

Q: Does this package include a new water pump shaft or just the seals?
A: This kit contains a comprehensive water pump rebuild kit including the necessary wear bearings and premium seals required to refresh your cooling system internally and prevent coolant-to-oil contamination.

Expert Pro-Tip: When splitting your 4-stroke cases for a full rebuild, cleanliness is everything. Ensure your engine cases are completely free of old gasket residue, grit, and metallic debris before mock-up. Always apply a generous amount of high-quality assembly lube to the new main bearings, crankshaft journals, and wrist pin during installation. Do not rotate the dry assembly manually until vital surfaces are properly lubricated to avoid scoring components on first startup.

Recommended Pairings:

• Shop Yamaha YZ250F Parts
• Shop VERTEX Engine Components
• Shop Premium 4-Stroke Engine Oil

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