Description
When your YFM450 Grizzly’s factory pistons start showing wear, you’re losing compression, power, and efficiency. The Wiseco 4939M08450 piston kit restores your engine to peak performance with precision-engineered components built to withstand repeated high-load cycles. Whether you’re putting in serious trail hours or need reliable mid-range power, this kit delivers the durability and compression you need to keep your machine performing like new.
Technical Specifications:
- Yamaha YFM450 Grizzly 2007–2014
- MPN: 4939M08450
- Wiseco OEM-grade pistons
- Standard bore diameter
- Optimized compression ratio
- Forged steel construction
- Precision-engineered rings
- Lightweight piston design
- Bolt-on installation
- Gasket kit sold separately
- Enhanced fuel efficiency
- Improved acceleration response
