Honda BF115JK1LDA 115HP – iST 20″ Shaft Standard Rotation

Honda BF115JK1LDA 115HP iST Digital Control

The Honda BF115JK1LDA 115HP iST represents the next generation of digital helm management, featuring the Intelligent Shift & Throttle (iST) system for cable-free command. Built on a robust 2.4L DOHC inline 4-cylinder platform, this 20-inch long shaft model is explicitly designed for mid-sized bay boats and dual-consoles requiring advanced digital marine engines for a premium operating experience. Its fly-by-wire technology eliminates mechanical friction, providing the captain with surgical precision during technical docking maneuvers and engine synchronization in multi-engine vessel configurations.

Operational efficiency is sustained via Honda’s Programmed Fuel Injection (PGM-FI) and the BLAST system, ensuring that 115 horsepower is delivered with immediate authority across the 4500-6000 RPM range. The BF115JK1LDA features a high-output 55-amp alternator to keep navigation systems and stabilizing gyros fully powered during extended coastal transits. US boaters consistently choose this Silver series iST model for its Lean Burn Control, which optimizes fuel consumption during cruising, and the refined DOHC 16-valve engineering that minimizes vibration throughout the hull.

Intelligent Shift & Throttle (iST)

The iST system provides the captain with a smooth and cable-free operating experience at the helm station through digital signal processing. This fly-by-wire interface allows for precise vessel positioning and synchronization across multiple engines, ensuring the engine reacts instantly to the captain’s input. You gain the tactile control necessary for safe navigation through busy harbors or narrow coastal channels with the reliability of high-speed digital electronics instead of traditional mechanical cables.

High-Displacement 2.4L DOHC Engine

The BF115JK1LDA utilizes a large 2.4-liter block to provide significantly higher torque and smoother power delivery than standard 115HP competitors with smaller displacements. This balanced architecture reduces mechanical stress and vibration throughout the vessel while providing the torque needed for rapid response under heavy loads. Operators may notice a refined four-stroke quietness with the mid-range pulling power essential for navigating unpredictable coastal inlets or large lake environments.

Advanced BLAST Torque Technology

Honda’s Boosted Low Speed Torque (BLAST) technology proactively advances ignition timing during rapid acceleration to get the boat on plane faster. This system eliminates the “dead zone” often found in 4-stroke outboards, providing a hole-shot that rivals many 2-stroke competitors in the 115HP class. Captains gain improved vessel authority, allowing them to carry heavier loads or pull skiers with the confidence of immediate, high-torque thrust from a dead stop even on heavier fiberglass hulls.

PGM-FI Fuel Induction System

The BF115 utilizes a multi-port Programmed Fuel Injection system that uses a series of sensors to deliver the exact amount of fuel and air required for current atmospheric conditions. This helps support instant, turnkey starts in cold weather and crisp throttle response throughout the entire power band from idle to wide-open throttle. US This can provide the advantage of high-pressure fuel efficiency and reduced emissions, making it one of the most eco-friendly and cost-effective outboards for long-distance cruising.

Lean Burn Control ECOmo

Honda’s ECOmo (Economy Controlled Motor) system utilizes a sophisticated lean-burn technology that adjusts the air-fuel mixture based on real-time speed and load. At cruising speeds, the engine operates on a leaner mixture to maximize fuel economy without sacrificing smooth operation or power. This results in the best-in-class fuel efficiency, allowing owners to stay on the water longer and reduce their total cost of ownership at the fuel dock throughout the season.

High-Output 55-Amp Charging

The BF115JK1LDA features a powerful 55-amp alternator (40 amps charging) that provides the highest electrical output in its class to keep all onboard electronics fully powered. This capacity easily supports modern navigation radar, large multi-function displays, and high-draw livewell pumps without draining the primary starting battery. Owners gain the confidence to run complex digital networks throughout the day, ensuring all critical safety and fish-finding gear remains operational.

Honda 5-Year Limited Warranty

Your investment is protected by Honda Marine’s high-pressure 5-year non-declining limited warranty, which remains consistent from the first day to the last. This warranty reflects the confidence Honda has in their Japanese-engineered components and provides US boaters with peace of mind during every launch.Maintenance note: Follow the manufacturer’s service procedures and lubrication specifications for the engine and gearcase.