What specific components are included in this Wiseco crankshaft kit?

This kit contains a complete crankshaft assembly, including a specially treated connecting rod. It also includes OEM quality main bearings and rod bearings, along with a comprehensive bottom-end gasket and seal kit.

What is the benefit of the connecting rod being heat-treated and shot-peened?

These processes are applied to the connecting rod to remove residual stress and smooth its surface. This treatment helps ensure the rod's strength and reliability under the engine's operating conditions.

Does this kit include everything needed to rebuild the bottom end?

This kit provides the crankshaft assembly, main bearings, and all necessary gaskets and seals for the bottom end. You will need to source other engine components like pistons, rings, and potentially clutch parts separately if they are not part of your rebuild plan.

Wiseco 03-11 Yamaha WR250F Crankshaft Kit

Specifications

Brand: Wiseco
Part #: WPC141
UPC: 193564111456

Wiseco 03-11 Yamaha WR250F Crankshaft Kit

Name: Wiseco 03-11 Yamaha WR250F Crankshaft Kit
Brand: Wiseco
Price: 564.22 USD
Availability: InStock

$564.22

On Backorder

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

Fits 2003-2013 Yamaha WR250F. This Wiseco crankshaft kit includes everything needed for a bottom-end rebuild, saving you time and money.

Key Features

Fits 2003-2013 Yamaha WR250F and 2007-2008 Yamaha WR450F.
Includes a complete crankshaft assembly, main bearings, and a full bottom-end gasket and seal kit.
The connecting rod is copper-plated, heat-treated, and shot-peened to reduce stress and smooth surface blends.
Main bearings and rod bearings are OEM quality for smooth operation and reliable longevity.
Crankshaft webs are precision machined for strength and durability.
Bundles essential bottom-end components into one convenient part number.

⚠️ 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 WR250F 2003-2013
Yamaha WR450F 2007-2008

Product Details

If you're rebuilding the bottom end of your 2003-2013 Yamaha WR250F, this Wiseco crankshaft kit is designed to make the job smoother. It bundles together the essential components you'll need, saving you the hassle of sourcing each part individually and ensuring they're all compatible for a reliable rebuild.

Inside this kit, you'll find a complete crankshaft assembly, which is precision machined for strength. The connecting rod is copper-plated, heat-treated, and shot-peened to reduce stress and improve its surface finish. This process helps ensure the rod can handle the demands of your engine. You also get OEM quality main bearings and rod bearings, chosen for smooth operation and long-term reliability. To top it off, a complete bottom-end gasket and seal kit is included, so you have all the seals and gaskets necessary to button up the engine case properly.

Having all these critical bottom-end components in one package under a single part number simplifies the purchasing process and helps ensure you have the right parts for a successful engine rebuild. This kit is a solid option for getting your WR250F's engine back in top shape.