Wossner Piston Kit 79.95mm Yamaha YXZ1000R 2016-2025 K8978DA-3

If you're pushing your YXZ1000R to its limits, your factory pistons are holding you back. The Wossner K8978DA-3 kit delivers measurable gains in responsiveness, reliability, and engine longevity through precision engineering that factory components simply can't match. Built for serious drivers who demand durability without compromise, this complete piston assembly gets you back on the track faster.

Wossner's design philosophy centers on reducing parasitic friction and optimizing oil delivery to critical bearing surfaces—two factors that directly translate to horsepower retention and extended engine life. The advanced skirt coating accelerates your break-in period, while strategically positioned oiling slots ensure consistent lubrication under sustained high-RPM conditions. Whether you're running stock boost or chasing more power down the road, this kit handles both scenarios.

• Bore diameter: 79.95mm
• Yamaha YXZ1000R
• Model years 2016–2025
• CNC-precision radial bosses
• Optimized pin oiling slots
• Annular groove design
• Low-friction skirt coating
• Lightweight construction
• Complete kit included
• Piston + rings + wrist pin + locks
• Bolt-on installation
• OEM fitment quality