Vertex Engine Rebuild Kit WR00008 — Yamaha YZ250F 2016-2018

Vertex Engine Rebuild Kit WR00008 — 2016-2018 Yamaha YZ250F

Product Description

The Vertex Engine Rebuild Kit provides an all-in-one overhaul package for racers and riders resetting the clock on their Yamaha YZ250F engine. Engineered to meet strict factory tolerances, this complete engine rebuild kit takes the guesswork out of a major mechanical overhaul by bundling all components necessary for a complete top and bottom-end restoration of your high-RPM 4-stroke machine.

This comprehensive service package includes a precision-machined crankshaft assembly, a standard compression piston kit, a complete engine gasket kit with reliable oil seals, and robust main bearings. To ensure operational reliability under racing stress, the kit also features a complete water pump rebuild kit, sturdy transmission bearings, a countershaft bushing/seal setup, a high-strength cam chain, and counter balancer bearings. Every element is built to handle the intense heat and mechanical load unique to modern quarter-liter four-stroke power plants.

Top Features: Vertex Engine Rebuild Kit

• Complete engine rebuild kit system renovates both the bottom end and top end simultaneously.
• Includes a heavy-duty crankshaft, standard compression piston kit, high-tensile cam chain, and counter balancer bearings.
• Supplied with a total engine gasket kit containing robust oil seals, main bearings, and a transmission bearing array.
• Equipped with dedicated water pump rebuild components paired with a countershaft bushing and seal kit.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

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

Frequently Asked Questions

Q: Is the piston included in this kit standard compression or high compression?
A: This kit features a Vertex standard compression piston kit, which replicates original equipment factory specifications to deliver reliable performance and maintain standard fuel octane compatibility.

Q: Does this package include the internal transmission bearings as well?
A: Yes, unlike typical kits that only replace the crankshaft main bearings, this Vertex kit includes the complete transmission bearings and countershaft assembly components for a true, ground-up rebuild.

Expert Pro-Tip: Modern 4-stroke engines like the YZ250F are highly sensitive to oil pressure and contamination. During a total engine teardown, always clear out the small oil strainers hidden within the oil lines and crankcase sumps. Additionally, never reuse old oil pump components when performing a build of this scale — verify your oil pump clearances or replace it entirely to guarantee adequate lubrication to your new crankshaft, cam chain, and piston.

Recommended Pairings:

• Yamaha YZ250F Performance Parts & Upgrades
• Yamaha 4-Stroke Performance Parts

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