Description
Stock water pumps can’t keep pace with a high-revving YZ125, leaving your engine vulnerable to thermal stress and performance loss. The Boyesen Impeller upgrade delivers measurably higher coolant flow across the entire RPM band, maintaining optimal operating temperatures even under sustained racing conditions. This magnesium-bodied pump uses Boyesen’s patented Nautilus-style impeller design—engineered for superior hydrodynamic efficiency—so you get reliable cooling without added parasitic drag.
- Magnesium construction
- Nautilus-style impeller
- Increased coolant flow
- All RPM ranges
- Hydrodynamic design
- YZ125 fitment
- Bolt-on installation
- OEM-compatible mounting
- Patented impeller geometry
- Thermal performance upgrade
