Yamaha LXF450ESA2 450HP XTO Counter-Rotation 35″ Motor

Description

The Yamaha LXF450ESA2 pairs 450HP with a 35-inch ultra-long shaft, built for multi-engine offshore boats that need the counter-rotation gearcase to balance a standard-rotation partner motor. The 5.6-liter 60-degree V8 displaces 5559cc and weighs 1010 lbs dry — enough mass to hold a flat torque curve without feeling sluggish off the line. Built for towering 35-inch transoms, the ultra-long shaft keeps the prop buried in clean water even through steep head seas.

Yamaha rates peak output through a 5000-6000 RPM band, and the 1.79:1 gear ratio converts that V8’s displacement into a torque curve heavy boats can actually use — the kind that gets a loaded hull onto plane without burying the stern. This is a Japan-built platform, and the counter-rotation gearcase exists specifically to cancel out prop torque on multi-engine express cruisers.

Technical Specifications of Yamaha LXF450ESA2

• Direct fuel injection atomizes fuel at 2900 PSI for efficient combustion.
• A 102-Amp gross alternator supports large house battery banks.
• Integrated electric steering replaces external hydraulic lines with instant digital response at the wheel.
• TotalTilt tilts the lower unit fully clear of the water for trailering and shallow-water operation.
• A 7.8-liter oil sump supports extended wide-open-throttle runs.
• The counter-rotation gearcase balances propeller torque on multi-engine express cruisers.

Sleeveless V8 Powerhead Block

The 32-valve DOHC V8 is Yamaha’s largest offshore block, built to hold torque at cruise as much as it delivers at wide-open throttle. Shaving weight from the powerhead without sacrificing durability matters most on a 35-inch shaft, where every pound at the transom affects how the hull settles in chop.

High Pressure Fuel Delivery

Direct fuel induction sprays gasoline straight into the cylinders under high pressure for clean combustion on 89-octane fuel. This delivery method is a big part of why throttle response stays sharp and acceleration feels immediate even when timing large ocean rollers.

Heavy Duty Lower Unit

Oversized internal gears and a hydrodynamic gearcase profile keep underwater drag down at cruising speed. That structural setup is what prevents gear chatter under load and keeps power transmission smooth all the way to the hub.

Digital Fly By Wire

Digital electronic control integrates directly with the steering setup to handle multi-engine tracking and trim adjustments automatically. Captains can run precise docking maneuvers off a single joystick instead of juggling multiple throttle levers.

Five Year Protection Plan

A factory-backed five-year limited pleasure warranty covers this engine for owners running deep into blue-water fishing zones. That coverage reflects the long-term durability built into Yamaha’s heaviest offshore platform.

Offshore Hull Match

Large offshore center consoles, catamarans, and fiberglass express cruisers in the 30-45 ft range are the target application for this 35-inch motor. The extended shaft length keeps the prop immersed and prevents ventilation when climbing over steep swells.

Cowling And Oil Access

A multi-piece outer cowling gives fast access to the points that need regular checking, cutting down time spent on routine service. The drain plug is positioned to keep oil changes clean rather than messy.

Pro Tip from the Shop: pull the gear lube plugs at the dock and refill from the bottom up using the lower unit pressure system — that keeps air pockets from forming in the gearcase.