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90-115hp Command Thrust

None More Durable. Or Efficient.

Heavier boats used for pleasure, fishing or commercial applications often sit high on the water and are hydro-dynamically different from other lighter boats. To address those differences and in response to additional challenges, Mercury developed its Command Thrust family of outboards.

Engine Information and Specifications

115 FourStroke Command Thrust 115 Pro XS Command Thrust 100hp FourStroke Command Thrust 90hp FourStroke Command Thrust
Engine Details The larger CT gearcase creates a bigger footprint in the water, providing more leverage to better control your boat. The larger torpedo, combined with a bigger-diameter prop, can lift a heavy boat onto plane more easily and hold it there at lower speeds without impacting top speed. The larger 4.0-inch gearcase footprint, combined with the robust 2.38:1 gear ratio and access to Mercury’s class-leading offering of large outboard propellers, is the perfect combination for pontoons, larger and heavier fiberglass or aluminium fishing and pleasure boats, or heavy-duty applications. Can lift a heavy boat onto plane more easily and hold it there at lower speeds without impacting top speed. Ideal for deck boats, aluminum tillers, commercial workboats, aluminum consoles, pontoons, inflatable rigid hulls, and offshore fishing. Can lift a heavy boat onto plane more easily and hold it there at lower speeds without impacting top speed. Ideal for tritons, pontoons, aluminum
HP / kW 115 / 84.6 115 / 86 100 / 73.6 90 / 67
Engine type 8-valve single overhead cam (SOHC)
Inline 4		 8-valve single overhead cam (SOHC)
Inline 4		 8-valve single overhead cam (SOHC)
Inline 4		 8-valve single overhead cam (SOHC)
Inline 4
Displacement (L) 2.1 2.1 2.1 2.1
Full throttle RPM 5000-6000 5300-6300 5000-6000 5000-6000
Air induction Performance-Tuned Scroll Intake Manifold Performance-Tuned Scroll Intake Manifold Performance-Tuned Scroll Intake Manifold Performance-Tuned Scroll Intake Manifold
Fuel induction system Computer Controlled Multi-Port Electronic Fuel Injection (EFI) Computer Controlled Multi-Port Electronic Fuel Injection (EFI) Computer Controlled Multi-Port Electronic Fuel Injection (EFI) Computer Controlled Multi-Port Electronic Fuel Injection (EFI)
Alternator amp / Watt 35 amp / 441 watt with water-cooled voltage regulator 35 amp / 441 watt with water-cooled voltage regulator 35 amp / 441 watt with water-cooled voltage regulator Injection (EFI) Alternator amp / Watt 35
Recommended fuel Unleaded 91 RON Minimum Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum Unleaded 90RON minimum Unleaded 91 RON Minimum
Recommended oil Mercury FourStroke Oil 10W-30 NMMA Certified FCW SAE 10W-30 Mercury FourStroke Oil 10W-30 Mercury FourStroke Oil 10W-30
Engine protection operator warning system SmartCraft Engine Guardian SmartCraft Engine Guardian SmartCraft Engine Guardian SmartCraft Engine Guardian