Honda BF250DK1XDA 250HP – iST 25″ Shaft Standard Rotation

Honda BF250DK1XDA 250HP iST V6

The Honda BF250DK1XDA pairs a 3.6L 24-valve SOHC V6 VTEC engine with standard rotation and iST digital drive-by-wire control, at 631 lbs dry. The 25-inch extra-long shaft is built for primary engine installs on mid-to-large hulls in Mulmarine’s outboard propulsion systems lineup.

Peak output holds between 5300-6300 RPM, using iST for seamless operation. The 2.00:1 gear ratio gives a hydrodynamic advantage for immediate hole-shot performance and thermal efficiency. Engineered in Japan, this unit includes vibration dampening and corrosion-resistant components for demanding saltwater environments.

Technical Specifications of Honda BF250DK1XDA

• The 3.6L V6 SOHC architecture provides the displacement for strong low-end torque.
• iST gives precise drive-by-wire control for effortless shifting and throttle synchronization.
• VTEC optimizes intake valve timing to maximize power output and thermal efficiency.
• Standard right-hand rotation gearcase gives efficient hydrodynamic thrust for primary offshore setups.
• The 90-Amp alternator delivers 60 Amps of charging power for offshore electronics.
• Programmed Fuel Injection (PGM-FI) ensures precise combustion for reliable cold-start reliability.
• Power Trim and Tilt facilitates immediate hull leveling for improved ride quality in rough seas.

V6 VTEC Technology

This iST outboard leans on a dual-stage cam profile, giving strong fuel economy at low speed and immediate power for offshore transit.

iST Drive-By-Wire

The iST system removes mechanical cables for a smooth digital helm experience, giving precise throttle adjustments critical for maneuvering large vessels in busy harbors.

25-Inch Extra-Long Shaft

The 25-inch shaft is built for standard offshore transoms on high-performance deep-V hulls, keeping performance consistent for mid-to-large fishing boats.

NMEA 2000 Integration

NMEA 2000 certification lets captains monitor fuel induction, RPM, and temperature data in real time.

Five Year Protection

Honda Marine backs this unit with a 5-year limited warranty covering major components against manufacturing defects.

Offshore Hull Application

This iST V6 fits mid-sized offshore center consoles and walkaround vessels, delivering sustained thrust through heavy offshore swells.

Maintenance & Longevity

Routine maintenance of the 3.6L V6 oil quality preserves internal mechanical tolerances. Pro Tip from the Shop: apply dielectric grease to the iST digital harness connectors every 100 hours to prevent moisture interference.