Smith's RV Centre

The Strongest Family of Direct Injected Engines in the Industry

OptiMax Pro XS blows away the competition when it comes to power, durability, performance and fuel efficiency. The new 250 Pro XS creates a class of its own with remarkable acceleration, awesome performance and the support of a three-year factory-backed, nondeclining warranty.

Standards

 Features

• IMPROVED DURABILITY AND RESPONSE
  Only OptiMax Pro XS features Carbon Fiber Reeds to control airflow into the engine crankcase. Carbon fiber reeds produce improved performance and efficiency because they are more durable and responsive than stainless steel or other fiber materials. 
• MORE HORSEPOWER
  The Pro XS offers a Higher Wide-Open-Throttle RPM Operating Range, giving you more propeller options to maximize the performance of your boat. 
• TOUGHER GEARCASE
  The durable Torque Master Gearcase (225/250 Pro XS) features a heavy-duty propshaft and Mercury-patented dual water pickups on the front end of the torpedo for a constant flow of cooling water. The asymmetrical skeg delivers superior handling by countering the torque created by prop rotation.

• PRECISE HIGH-SPEED HANDLING
  Controlled handling at all speeds is essential, so we outfitted the 250 Pro XS with Solid Billet Aluminum Mounts to keep the engine from turning or twisting under high torque (20-inch models only). 
• EXCELLENT EFFICIENCY
  Exclusive Dome-Shaped Pistons efficiently direct the fuel/air charge to the spark plug, producing excellent running quality, fuel economy and low emissions. 
• SUPERIOR PERFORMANCE
  The OptiMax Two-Stage Direct Injection System produces consistent performance and unmatched throttle response by providing a constant supply of atomized fuel and air. 
  

Mercury OptiMax Outboards

175HP

225HP

250HP

HP @ Prop

175

225

250

kW @ Prop

130

168

187

Max RPM (WOT)

5500-6000

5500-6000

5500-6000

Cylinders

V-6 (60 degree Vee)

V-6 (60 degree Vee)

V-6 (60 degree Vee)

Displacement (CID/cc)

153/2507

185/3032

185.9/3032

Bore & Stroke (in)

3.50 x 2.65

3.63 x 3.0

3.63 x 3.0

Bore & Stroke (mm)

89 x 67

92 x 76

92 x 76

Cooling System

Water-cooled w/thermostat & pressure control

Water-cooled w/thermostat & pressure control

Ignition System

PCM 07 multi-strike

PCM 07

PCM 07

Starting

Electric (turn-key)

Electric

Electric (turn key)

Gear Ratio

1.87:1

1.75:1

1:75:1

Gear Shift

F-N-R

F-N-R

F-N-R

Steering

Remote

Remote

Remote

Alternator

60 (belt driven)

60 (belt driven)

60 (belt driven)

Trim System

power trim

power trim

power trim

Exhaust System

Through prop

Through prop

Lubrication System

Electronic multipoint oil injection

Electric multipoint oil injection

Recommended Oil

Mercury Premium Plus

Mercury Premium Plus (TC-W3)

Mercury Premium Plus

Fuel Induction System

2-stage direct fuel injection

2-stage direct fuel injection

2-stage direct fuel injection

Shaft Length (inches)

20/25

20/25

20/25

Shaft Length (mm)

508/635

508/635

508/635

Dry Weight (lbs.)

431

505

505

Dry Weight (kg)

195

229

SmartCraft

Yes

Yes

Yes

CARB Star Rating

3

3

3

Warranty

3 years

3 years

3 years

Collision Warranty

3 years

3 years

Ethanol Tolerance

10%