Improved fuel efficiency — The new Mercury 150 Pro XS is 5% more fuel‑efficient than the 2.5L OptiMax 150 Pro XS. Performance gearcase — The new 150 Pro XS features a 2.08:1 gear ratio that delivers more torque to the prop shaft for improved acceleration.
What is the difference between a Mercury and a Mercury Pro XS?
In fact, the new 115 Pro XS is 16 pounds lighter than the 115 OptiMax it replaces, and 18 pounds lighter than the nearest competing 115hp engine. Fastest top speed: Up to 3 mph faster than its nearest competitor and more than 1 mph faster than Mercury’s standard 115 FourStroke.
What is the difference between a Mercury 4 stroke and a Pro XS?
The Pro XS 250/300 feature different engine mapping than the FourStrokes, allowing them to achieve 200 more rpm — up to 6200 — for more overall power and higher speed. The 300R is tuned to rev even higher, a peak of 6400 rpm, thanks to shorter intake runners and a custom intake cam.
What is the max RPM of the Mercury 115 hp outboard?
Mercury WOT RPM Range Chart*
| Mercury* WOT RPM Range Chart | ||
|---|---|---|
| HP/Model | Year | Wide Open Throttle RPM Range* |
| 115 4-Stroke | 2007-2014 | 5800-6400 |
| 115 4-Stroke | 2015~ | 5000-6000 |
| 115 EFI CT | 2014~ | 5000-6000 |
What does pro Xs stand for?
Pro XS is a high output unit. Half way between production and race. The warranty time they give you is one of the primary differences. Race motors are slim warranty 1+1. Production is 3-5.
Is the Mercury Pro XS a 2 stroke?
The new 4-stroke Mercury Pro XS replaces the 2-stroke OptiMax series of engines which have been discontinued. Like the OptiMax, the Pro XS specializes in having high low-end torque and lightweight. It has been specially designed for the demands of bass boat, multi-specie, and saltwater inshore anglers.
What is the max RPM on a Mercury 250 Pro XS?
Recommended propping RPM is 5500-6000 RPM’s. The HARD limiter has varied from 6300-6400 over the years. In many cases, if propped carefully, and trimmed gradually at WOT, the engine may be cable of reaching 6370, and running there for extended periods.
What RPM should a 4.3 Mercruiser run at?
MerCruiser 4.3L Engine Performance Specifications | Longblock Pricing
| Models | 4.3L | 4.3L EFI |
|---|---|---|
| Displacement | 262 cid (4.3 l) | |
| Maximum rpm @ WOT3 | 4400-4800 rpm | |
| Idle rpm in NEUTRAL | 650 rpm5 | 600 rpm6 |
| Oil Pressure @ 2000 rpm | 30-70 psi (207-483 kPa) |
Is the Mercury 150 pro XS a good outboard?
Yes, I’d like to receive the free BoatTEST Newsletter. The Mercury 150 Pro XS is a high-output 150-hp 4-stroke and Mercury Marine says the inline-4, naturally aspirated outboard meets the company’s standards for hole shot, top-end speed, and durability.
What is the difference between the Mercury 150 pro XS and Optimax?
Higher full-throttle RPM — Increased maximum engine RPM from 5,800 to 6,000 allows for a wider selection of propeller pitches and the ability to dial-in performance for superior hole shot or top speed. Improved fuel efficiency — The new Mercury 150 Pro XS is 5% more fuel‑efficient than the 2.5L OptiMax 150 Pro XS.
How much horsepower does a Mercury Pro XS motor have?
115-150hp Extraordinary engineering for extraordinary speed. When you’re feeding your need for speed, Mercury Pro XS engines will get you there faster. Engineered to meet the demands for high speeds on fresh or salt water, these high-performance motors deliver a winning combination of power, acceleration, durability, and fuel efficiency.
Is the Mercury 150 four stroke worth the extra RPM?
So, even with the extra RPM up top, you won’t be faster, because all else being equal, you won’t be able to turn the same prop faster. The incredible mileage the Mercury 150 Four Stroke achieves is partly the engine, but mostly the hull.
