CRANKSHAFT BOTTOM KIT 02-18 YZ85, WISECO WPC123 YAMAHA, WITH GASKETS AND BEARINGS
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Wiseco Crankshaft Bottom Kit WPC123 with Gaskets and Bearings. This kit is precision-trued to OEM specifications and factory assembled. Connecting rods are double-forged to maintain superior dimensional consistency through improved grain flow. Shot-peening eliminates residual stresses and smoothly blends the rod forging surfaces. Features corrosion-resistant surface treatment, and top and bottom end rod bores case hardened to 58-62 RC to optimize bearing running surface. Crank pin bearing radial running clearance is optimized to ensure 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 top end due to thermal transfer from the piston. Silver-coated bronze phosphor thrust washers with a dimpled design increase oil retention and reduce friction between the rod and washer interface. Crank pin bearings are manufactured with the highest-quality hot-rolled steel and case hardened to 58-62 RC.
- SKU
- 56-178.WI.CBK
- Brand
- Wiseco
- Availability
- In Stock (3)
Fitments (17)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 85 | 2002 |
| YAMAHA | YZ 85 | 2003 |
| YAMAHA | YZ 85 | 2004 |
| YAMAHA | YZ 85 | 2005 |
| YAMAHA | YZ 85 | 2006 |
| YAMAHA | YZ 85 | 2007 |
| YAMAHA | YZ 85 | 2008 |
| YAMAHA | YZ 85 | 2009 |
| YAMAHA | YZ 85 | 2010 |
| YAMAHA | YZ 85 | 2011 |
| YAMAHA | YZ 85 | 2012 |
| YAMAHA | YZ 85 | 2013 |
| YAMAHA | YZ 85 | 2014 |
| YAMAHA | YZ 85 | 2015 |
| YAMAHA | YZ 85 | 2016 |
| YAMAHA | YZ 85 | 2017 |
| YAMAHA | YZ 85 | 2018 |
- General Product Group
- Crankshafts & Parts
- General Product Type
- Crankshaft Bottom End Kits
- Variant Id
- 250165
FULL DESCRIPTION
Wiseco Crankshaft Bottom End Kit with Gaskets and Bearings
This Wiseco Crankshaft Bottom End Kit is engineered for high performance and durability. It includes all necessary gaskets and bearings for a complete rebuild.
Key Features:
- Precision-trued to OEM specifications.
- Factory assembled connecting rods are double-forged for superior dimensional consistency.
- Shot-peening eliminates residual stresses and smooths rod forging surfaces.
- Corrosion-resistant surface treatment.
- Top and bottom end rod bores are case hardened to 58-62 RC for optimal bearing surface.
- Crank pin bearing radial running clearance is optimized 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 are manufactured with high-quality hot-rolled steel and case hardened to 58-62 RC.
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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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