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ID # 35296706

Mercury -Pro XS 300 hp

  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
  • Mercury Pro XS 300 hp
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Overview

Pro XS 175 - 300hp

3.4L V6 and 4.6L V8

Mercury Pro XS® outboards are engineered for those boaters who demand ultimate performance – anglers competing on the highly competitive tournament trails and powerboaters who simply crave speed and acceleration. Exclusive components and tuning extract every ounce of performance from each Pro XS model so you can take it to the limit.
Specifications
Model
Pro XS
Category Name
Outboard Engines
Year
2025
Sale Type
New
Manufacturer
Mercury
Name
ProXS 300HP
HP / KW
300 / 221
Horsepower
300
Engine Type
V8
Displacement (L)
4.6L
Recommended Fuel
Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
Alternator Amp / Watt
85 amp (1071 Watt) with Idle Charge
Dry Weight *Lightest Model Available
511 lbs / 232 kg
features

Adaptive Speed Control

Adaptive Speed Control maintains a desired rpm regardless of changes in load or conditions without adjustments to the throttle lever position – a first for the outboard industry.

TorqueMaster Gearcase

The lightweight TorqueMaster gearcase (featured on select V8 models) has a 1.75:1 gear ratio and a robust 1.25-inch-diameter prop shaft designed for semi-surfacing, high-speed applications.

Performance-Tuned Exhaust

Exhaust tone has been fine-tuned to provide a brawny performance-inspired sound quality that’s unmistakable on the water yet quieter than competing high-output engines.

Transient Spark Technology

Transient Spark Technology electronically adjusts the ignition timing of the engine as needed. This subtle, automatic change produces additional torque for faster hole shot and acceleration.

Extra Charging Power

A powerful alternator provides net charging output of 20 amps at idle and 85 amps at wide open throttle. Idle Charge battery-management technology automatically increases idle rpm to boost alternator output and recharge low batteries.
performance

Unmatched Power and Speed

The V8 and V6 Pro XS outboards perform like no other, with a dual overhead cam design that delivers instantaneous throttle response and immediate power.

Superior Fuel Economy

Advanced Range Optimization improves cruise-speed fuel efficiency by automatically adjusting fuel delivery so seamlessly the operator won’t feel or hear it.

Lightweight Heavyweight

4.6L V8 and 3.4L V6 Pro XS outboards offer a combination of ample torque and less weight – ideal for heavier loaded boats.
smartcraft

SmartCraft® The Power to Do More

SmartCraft® is a full suite of digital technologies, fully integrated and totally coordinated. Gauges, sensors, vessel systems, computer-controlled features – one total package, one high level of control. Make your boating experience easier, safer and a lot more enjoyable.

Mercury Pro XS 300 hp Active Trim

Active Trim makes boating easier and more enjoyable by automatically trimming outboard engines. Active Trim simplifies boat operation while improving engine performance and decreasing fuel costs.

Active Trim is compatible with all current SmartCraft-capable Mercury outboards (40hp and above).

Mercury Pro XS 300 hp VesselView Mobile

VesselView Mobile allows boaters to use a mobile device (smartphone or tablet) to connect with their Mercury outboard engine(s). The plug-and-play module connects via Bluetooth, providing quick, convenient access to your engine’s data.

VesselView Mobile is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above).

Mercury Pro XS 300 hp VesselView Link

VesselView Link integrates an existing multi-function display with Mercury engine(s) to place information and control at the driver’s fingertips. Its user interface is easy to navigate, and it integrates chart-plotter, sonar, radar and more into one display.

VesselView Link is compatible with all SmartCraft-capable Mercury outboards (2004 and newer, 40hp and above).

Mercury Pro XS 300 hp DTS Hot Foot

A Digital Throttle & Shift (DTS) Hot Foot pedal allows you to keep both hands on the wheel during high-speed runs. DTS provides precise handling, seamlessly connects with compatible displays and delivers instant response and total control with no hesitation.

DTS Hot Foot pedal is compatible with 200 - 300hp Pro XS outboards.
pro xs advantage

Efficient All-Around Performance

A host of efficiency-enhancing features such as Advanced Range Optimization (ARO), a closed-loop fuel system and a hydrodynamic gearcase optimize fuel economy so you can get more done on every tank.

Squeezing Speed from Fuel

Mercury V8 and V6 Pro XS models transform every drop of fuel into performance to deliver excellent economy at cruising speed and wide-open throttle.

Tournament-Winning Torque

More displacement delivers more torque and Transient Spark technology optimizes spark timing to boost that torque during hole shot.

Smart Charging

A powerful alternator provides net charging output of 20 amps at idle and 85 amps at wide open throttle. Idle Charge battery-management technology automatically increases idle rpm to boost alternator output and recharge low batteries.
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