Mercury - Pro XS 300 hp
- Location:
- Northern Leisure
Adaptive Speed ControlAdaptive 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 GearcaseThe 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 ExhaustExhaust 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 TechnologyTransient 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 PowerA 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. |
SmartCraft® The Power to Do MoreSmartCraft® 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. |
|
|
|
|
Active Trim 
VesselView Mobile 
VesselView Link 
DTS Hot Foot
Unmatched Power and SpeedThe 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 EconomyAdvanced Range Optimization improves cruise-speed fuel efficiency by automatically adjusting fuel delivery so seamlessly the operator won’t feel or hear it. |
Lightweight Heavyweight4.6L V8 and 3.4L V6 Pro XS outboards offer a combination of ample torque and less weight – ideal for heavier loaded boats. |
Efficient All-Around PerformanceA 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 FuelMercury 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 TorqueMore displacement delivers more torque and Transient Spark technology optimizes spark timing to boost that torque during hole shot. |
Smart ChargingA 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. |
Videos
8M0215645_Mercury_BrandBook_2023_Web.pdf
Shop New 
Resources
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.