Honda BF225DK1XDA 225HP – iST 25″ Shaft Standard Rotation

Honda BF225DK1XDA 225HP iST V6

The Honda BF225DK1XDA pairs a 3.6L 24-valve SOHC V6 VTEC engine with standard rotation and iST digital technology, finished in silver at 631 lbs dry. The 25-inch extra-long shaft is engineered for single-engine offshore vessels, part of Mulmarine’s outboard propulsion systems lineup.

Peak output runs at 6000 RPM, leveraging VTEC for thermal efficiency. The 2.00:1 gear ratio gives a hydrodynamic advantage for reaching plane quickly and holding cruise stability in choppy saltwater. Engineered for offshore endurance, this unit includes corrosion-resistant materials and vibration dampening for a quiet, smooth ride.

Technical Specifications of Honda BF225DK1XDA

• The 3.6L V6 SOHC engine architecture delivers massive low-end torque for heavy-load acceleration.
• iST enables precise drive-by-wire control for smooth shifting and synchronization.
• VTEC optimizes valve timing at high RPM for stronger power and thermal efficiency.
• Standard right-hand rotation gives efficient hydrodynamic thrust for primary offshore installs.
• The 90-Amp alternator delivers 60 Amps of charging power for critical marine electronics.
• Programmed Fuel Injection (PGM-FI) ensures precise combustion for reliable cold-start reliability.

V6 VTEC Technology

This VTEC-equipped V6 provides a dual-stage cam profile, giving strong fuel economy at low speed and immediate high-end power for offshore transit.

Digital iST Control

The iST system removes mechanical cables for a seamless helm experience, allowing effortless docking and precision throttle adjustments in busy marinas.

25-Inch Extra-Long Shaft

The 25-inch shaft is built for standard offshore transoms needing deep propeller immersion, keeping performance consistent on mid-to-large fiberglass fishing hulls.

NMEA Digital Integration

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

Limited Honda Warranty

Every 225HP unit is protected by a 5-year limited warranty covering structural and mechanical defects.

Offshore Hull Match

This iST V6 fits large center consoles and walkaround vessels, delivering sustained thrust through offshore swells and tidal flows.

Maintenance & Longevity

Routine inspection of the wet sump lubrication system keeps the 3.6L V6’s tolerances tight. Pro Tip from the Shop: inspect the iST digital harness connectors for salt residue every 50 hours.