What specific components are included in this Wiseco crankshaft kit?

This kit contains a complete crankshaft assembly, the necessary main bearings, and a comprehensive bottom-end gasket and seal kit. It's designed to cover the core components for a bottom-end rebuild.

What is the purpose of the copper plating and heat treatment on the connecting rod?

The copper plating, heat treatment, and shot-peening process applied to the connecting rod are intended to remove residual stress and smooth the surface. This helps to enhance its overall strength and durability for reliable engine operation.

Are any special tools required for installing this crankshaft kit?

Installation of a crankshaft kit typically requires specialized engine tools and a solid understanding of internal engine mechanics. It is recommended to refer to the manufacturer's installation instructions or consult a qualified mechanic for proper installation.

Wiseco 03-20 Yamaha YZ250 Crankshaft Kit

Specifications

Brand: Wiseco
Part #: WPC134
UPC: 193564111050

Wiseco 03-20 Yamaha YZ250 Crankshaft Kit

Name: Wiseco 03-20 Yamaha YZ250 Crankshaft Kit
Brand: Wiseco
Price: 426.84 USD
Availability: InStock

$426.84

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2003-2025 Yamaha YZ250. This Wiseco crankshaft kit includes the crankshaft assembly, main bearings, and a complete bottom-end gasket set for a full bottom-end rebuild.

Key Features

Fits 2003-2025 Yamaha YZ250 and 2016-2025 Yamaha YZ250X.
Includes a complete crankshaft assembly, main bearings, and a full bottom-end gasket and seal kit.
Connecting rod is copper-plated, heat-treated, and shot-peened to reduce stress and smooth the surface.
Features OEM quality main bearings and rod bearings for smooth operation and longevity.
Precision machined crank webs are designed for strength.
Benefits from elevated engineering and quality control measures for reliable service.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Yamaha YZ250 2003-2025
Yamaha YZ250X 2016-2025

Product Details

When you're rebuilding the bottom end of your Yamaha YZ250, getting all the necessary components in one convenient package can save a lot of time and hassle. This Wiseco crankshaft kit is designed to do just that, bringing together the core parts you'll need for a thorough bottom-end overhaul on your 2003-2025 model. It contains a complete crankshaft assembly, the essential main bearings, and a full set of bottom-end gaskets and seals, all bundled under a single part number.

The connecting rod in this kit is built for durability, featuring a copper-plated, heat-treated, and shot-peened finish. This process helps to reduce stress and smooth out the surface, contributing to its overall strength. Wiseco also includes OEM quality main and rod bearings, ensuring smooth operation and reliable longevity for your engine. The crank webs are precision machined to provide maximum strength, and the entire kit benefits from the brand's elevated engineering and quality control measures, aiming for dependable service life.