Honda BF90D5JRTA 65HP – Jet 20″ Shaft Remote Mechanical

Honda BF90D5JRTA 65HP Jet Drive

The Honda BF90D5JRTA pairs a jet drive with a 1.5L 16-valve SOHC VTEC engine, weighing 355 lbs, using a 90HP powerhead to deliver torque for shallow-water river applications. The 20-inch transom height configuration is designed to eliminate lower unit snagging on rocky riverbeds, part of Mulmarine’s outboard propulsion systems lineup for professional inland operations.

Peak output holds within the 5300-6300 RPM full-throttle range. The 1.00:1 direct jet drive ratio gives a mechanical advantage, translating the VTEC-enhanced torque into hole-shot acceleration without a traditional propeller. This corrosion-resistant marine engine includes vibration dampening for a smooth ride across turbulent whitewater rapids.

Technical Specifications of Honda BF90D5JRTA

• The 1.5L inline four-cylinder SOHC architecture delivers strong displacement for heavy payload hauling.
• Direct jet pump propulsion eliminates the traditional lower unit gearcase for shallow-water navigation.
• VTEC technology optimizes intake valve timing at high RPM to maximize thrust and thermal efficiency.
• Programmed Fuel Injection manages the air mixture for strong fuel induction efficiency.
• A 44-Amp alternator delivers 35 Amps of charging power to keep marine electronics operational.
• NMEA 2000 certification allows engine data integration with modern digital helm displays.

1.5L VTEC Jet Propulsion

The 1.5L VTEC engine maximizes combustion efficiency while delivering the low-end torque needed to drive the high-volume jet pump, giving reliable thrust river guides depend on.

Direct Jet Pump Architecture

The 1.00:1 direct jet drive system expels water forcefully for thrust, letting the vessel glide over shallow shoals, sandbars, and submerged obstacles without risking a conventional propeller or gearcase.

PGM-FI Induction System

Honda’s PGM-FI monitors atmospheric variables for the right fuel ratio, guaranteeing instant throttle response and preventing engine bogging.

High-Output 44A Alternator

This jet model’s 44-Amp alternator produces 35 Amps of net charging power, keeping fishfinders, livewell pumps, and navigation lights running without draining the starting battery.

Honda Factory Warranty

Every Honda 65HP Jet unit carries a five-year limited warranty, with genuine parts through a nationwide marine dealer network.

Shallow Water River Match

This remote mechanical jet outboard suits mid-sized aluminum jet boats and river skiffs, delivering thrust for coastal tidal flats.

Maintenance & Longevity

Regular inspection of the wet sump lubrication system is critical for maintaining internal engine tolerances. Pro Tip from the Shop: inspect the jet pump intake grate for rocks or debris, and lubricate the remote mechanical steering linkage.