CRANKSHAFT BOTTOM KIT YAMAHA BANSHEE YZF350 WISECO WPC100 ATV

The Wiseco Crankshaft Kit WPC100 is a complete bottom-end rebuild kit for Yamaha YFZ350 Banshee models. It includes a precision-trued crankshaft, bottom-end gasket and seal set, crank bearings, and small-end bearings. Designed for superior performance and durability, this kit meets OEM specifications and ensures reliability for high-performance applications.

Features:

• Precision-trued to OEM specifications and factory-assembled.
• Double-forged connecting rods for superior dimensional consistency and improved grain flow.
• Shot-peened rods eliminate residual stresses and improve durability.
• Corrosion-resistant surface treatment for extended lifespan.
• Case-hardened rod bores (58-62 RC) optimize bearing surfaces.
• Optimized radial running clearance for maximum crank pin bearing performance.
• Precision honing for ultra-round bearing surfaces.
• Engineered oiling slots enhance rod strength and bearing life.
• Double-drilled small ends ensure enhanced piston pin lubrication and cooling.
• Silver-coated bronze phosphor thrust washers reduce friction and improve oil retention.
• Crank pin bearings made of high-quality hot-rolled steel, case-hardened to 58-62 RC.
• Caged needle roller bearings allow for high RPM operation.
• Precision-machined crank webs for reliability and balance.
• Includes premium main bearings and a complete bottom-end gasket set with all seals and gaskets required for installation.

Compatible Models:

• Yamaha YFZ350 Banshee (1987–2006)
• Yamaha YFZ350LE Banshee Limited Edition (2003–2005)
• Yamaha YFZ350SE Banshee Special Edition (2005–2006)
• Yamaha YFZ350SP Banshee 50th Anniversary Edition (2006)

Part Number: WPC100

Dispatch Times

Local Stock: Dispatches in < 24 hours

Parts showing as available at our Warehouse in Gorey ship the same business day if ordered before 1pm. 

Supplier Stock: Dispatches in 2-4 Days

Parts showing as available at our Supplier Warehouse are ordered from our supplier and delivered to us before we can dispatch. More info is available on this page under "Stock Availability".

OEM Special Order: Dispatches in 3-10 Days

This website does not have access to live stock levels from our OEM Suppliers. In most cases the parts will be available but in the case of backordered parts we will notify you. We receive parts from Yamaha in 3-4 days, All others including Honda, Suzuki, Kawasaki, Polaris please allow 7-10 days for us to receive the parts. 

Delivery Times

Ireland & Northern Ireland:

1-2 Days using GLS/An Post

Germany, France, Netherlands, Belgium:

3-5 Days using GLS/Fedex

Italy, Spain & Other EU Countries:

4-7 Days using GLS/Fedex