Description
When your Yamaha Big Bear 400 starts losing compression or shows signs of worn piston rings, you’re looking at reduced power output and increased fuel consumption. This Wiseco Piston Kit delivers a complete, ready-to-install solution that restores your engine to factory specifications—or exceeds them with precision-engineered tolerances that serious riders demand. Built in the USA to exacting standards, it’s the foundational upgrade that keeps your quad performing reliably whether you’re tackling trails or putting in work hours.
- 84.00 mm bore diameter
- Fits Yamaha Big Bear 400 (2000–2006)
- Complete kit assembly included
- Piston, rings, wrist pin(s), circlips
- Precision-engineered construction
- USA manufactured
- Restores compression and power
- Bolt-on installation
- MPN: 4676M08400
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