CRANKSHAFT BOTTOM KIT 03-13 WRF250, WISECO WPC141 YAMAHA
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Wiseco Crankshaft Bottom Kit WPC141 with Bearing and Gaskets. Precision-trued to OEM specifications and factory assembled. Connecting rods are double-forged for superior dimensional consistency through improved grain flow. Shot-peening eliminates residual stresses and smoothly blends rod forging surfaces. Corrosion-resistant surface treatment. Top and bottom end rod bores are case hardened to 58-62 RC to optimize bearing running surface. Crank pin bearing radial running clearance is optimized for maximum performance. Precision honing ensures an ultra-round bearing surface. Precision-engineered oiling slots maximize rod strength and bearing life. Double-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of the top end due to thermal transfer from the piston. Silver-coated bronze phosphor thrust washers with dimpled design increase oil retention and reduce friction between rod and washer interface. Crank pin bearings are manufactured with the highest-quality hot-rolled steel and case hardened to 58-62 RC. Part number 56-225.WI.CBK.
- SKU
- 56-225.WI.CBK
- Brand
- Wiseco
- Availability
- In Stock (2)
Fitments (22)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 250F | 2003 |
| YAMAHA | WR 250F | 2004 |
| YAMAHA | WR 250F | 2005 |
| YAMAHA | WR 250F | 2006 |
| YAMAHA | WR 250F | 2007 |
| YAMAHA | WR 250F | 2008 |
| YAMAHA | WR 250F | 2009 |
| YAMAHA | WR 250F | 2010 |
| YAMAHA | WR 250F | 2011 |
| YAMAHA | WR 250F | 2012 |
| YAMAHA | WR 250F | 2013 |
| YAMAHA | WRF 250 | 2003 |
| YAMAHA | WRF 250 | 2004 |
| YAMAHA | WRF 250 | 2005 |
| YAMAHA | WRF 250 | 2006 |
| YAMAHA | WRF 250 | 2007 |
| YAMAHA | WRF 250 | 2008 |
| YAMAHA | WRF 250 | 2009 |
| YAMAHA | WRF 250 | 2010 |
| YAMAHA | WRF 250 | 2011 |
| YAMAHA | WRF 250 | 2012 |
| YAMAHA | WRF 250 | 2013 |
- General Product Group
- Crankshafts & Parts
- General Product Type
- Crankshaft Bottom End Kits
- Variant Id
- 250313
FULL DESCRIPTION
Wiseco Crankshaft Bottom End Kit
Enhance your motorcycle's performance and reliability with this Wiseco Crankshaft Bottom End Kit. Designed for precision and durability, this kit includes all the necessary components to rebuild or upgrade your engine's crankshaft assembly.
Key Features:
- Precision-trued to OEM specifications
- Connecting rods are double-forged for superior dimensional consistency and improved grain flow
- Shot-peening eliminates residual stresses and smooths forging surfaces
- Corrosion-resistant surface treatment
- Top and bottom end rod bores are case hardened to 58-62 RC for optimal bearing running surface
- Optimized crank pin bearing radial running clearance for maximum performance
- Precision honing ensures an ultra-round bearing surface
- Engineered oiling slots maximize rod strength and bearing life
- Double-drilled small ends provide extra lubrication and cooling to the piston pin, reducing thermal distortion
- Silver-coated bronze phosphor thrust washers with a dimpled design increase oil retention and reduce friction
- Crank pin bearings manufactured with the highest quality hot-rolled steel, case hardened to 58-62 RC
QUESTIONS? JUST ASK
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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