2026 Mercury Racing 300R

Let them try and catch you
Take the lead and never look back with the Mercury Racing 300R outboard. Featuring a rock-solid 15-inch HD Conventional MidSection (HD CMS), this adrenaline-pumping V8 powerhouse brings modern R-Series four-stroke technology to high-performance sport, flat sand bass boats. Whether you’re replacing a high-output two-stroke or building your new dream machine, experience the ultimate fusion of breathtaking speed and control.

Trimmed Down. Amped Up.
With a proven offshore pedigree, the HD CMS is built to exceed the most extreme boating demands. Heavy-duty forged transom brackets and a robust single-ram trim system with remote pump keep you running at the highest speeds through the most challenging conditions.

Refined for Bold New Applications
Smaller footprint, same racing DNA—now available for boats that demand agility without sacrificing performance

Compact. Capable. Uncompromising.
The 300R with the 15-inch HD CMS delivers Mercury Racing performance in a smaller, more versatile package. Built for boaters who demand precision handling, aggressive acceleration, and proven reliability. Ready to rig your next high-performance machine?