Wiseco Crankshaft Kit WPC148 - Yamaha Grizzly 660 / Rhino 660 2002-2008

Product Description

The Wiseco WPC148 Crankshaft Kit delivers a comprehensive bottom-end rebuild solution engineered specifically for 660cc Yamaha utility quads and side-by-sides. Each package supplies a fully assembled crankshaft, matched main bearings, and a complete bottom-end gasket set to restore your engine's foundation. Designed to endure the extreme loads of utility work and trail riding, this kit ensures your Yamaha Grizzly 660 or Yamaha Rhino 660 maintains proper crankshaft rotational balance and crankcase sealing.

At the center of the assembly is a double-forged connecting rod constructed to maximize grain flow alignment and resist tensile failure under heavy torque loads. The rod forging undergoes shot-peening to relieve residual surface stresses, followed by a specialized corrosion-resistant surface treatment. Engineered with precision-honed bearing surfaces, optimized radial running clearances, and double-drilled wrist pin oiling passages, the Wiseco assembly promotes continuous lubrication to critical friction zones while isolating thermal transfer.

Top Features: Wiseco Crankshaft Kit

• Factory assembled and precision trued to exact OEM specifications for true rotational balance.
• Double-forged connecting rod construction aligns grain flow for enhanced structural consistency.
• Shot-peened rod finish relieves surface stresses while corrosion-resistant treatments protect against oil contamination.
• Double-drilled small end provides targeted wrist pin lubrication and cooling to minimize heat transfer.
• Complete bottom-end package includes the complete crankshaft assembly, main bearings, and bottom-end gasket kit.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: What parts are included in the Wiseco WPC148 kit?
A: The kit comes complete with the factory-assembled crankshaft, double-forged connecting rod, main bearings, and a full bottom-end gasket kit.

Q: Does this crankshaft assembly come pre-trued?
A: Yes, Wiseco crankshafts are factory assembled and precision trued to OEM specifications right out of the box.

Q: What is the stroke length on this crankshaft?
A: This kit features a standard 84.00 mm stroke length designed for the 660cc engine platform.

Expert Pro-Tip: When splitting the cases on a Grizzly or Rhino 660, never force the crankcase halves apart using screwdrivers or pry bars along the mating surfaces, which gouges the aluminum and ruins the gasket seal. Use a dedicated crankcase splitter tool. Before dropping the new crank assembly into place, freeze the main bearings and gently warm the crankcase bearing bores with a heat gun to allow the bearings to seat square without side-loading the races.

Recommended Pairings:

• Yamaha ATV & Quad Performance Parts
• Yamaha 4-Stroke Performance Parts
• Off-Road Engine Tools & Equipment

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