Honda BF140AK1XRA 140HP in White 25″ Shaft Standard Rotation Remote Mechanical

Honda BF140AK1XRA 140HP 4-Stroke White

The Honda BF140AK1XRA pairs a 2.4L DOHC inline 4-cylinder engine with mechanical control, finished in Grand Prix White. The 25-inch extra-long shaft is built for high-transom multi-species boats and offshore bay boats in Mulmarine’s 4-stroke marine outboards lineup that need a familiar tactile feel. The 16-valve DOHC design gives smooth power delivery and reduced vibration.

The PGM-FI system and Honda’s VTEC technology deliver a “best of both worlds” power curve across a 5000-6000 RPM range. The BF140AK1XRA runs a 2.14:1 gear ratio and a 55-Amp alternator, suited to offshore vessels with high-draw electronics and multi-battery systems, with simplified rigging and mid-range torque.

Remote Mechanical Control Reliability

This version is built for remote mechanical setups, letting boaters use traditional cable or hydraulic steering — well suited to repower projects with existing steering lines on high-transom vessels.

Grand Prix White Premium Aesthetic

The Grand Prix White finish matches modern fiberglass and aluminum hulls, engineered to withstand saltwater environments and UV exposure.

2.4L DOHC Displacement Performance

The 2.4-liter block gives higher torque and smoother power delivery than standard 140HP competitors with smaller displacements, reducing mechanical stress and vibration.

VTEC Variable Valve Technology

Honda’s VTEC provides a camshaft profile that optimizes valve lift and timing for both low-speed torque and high-speed performance.

Advanced BLAST Torque System

Honda’s BLAST technology advances ignition timing during rapid acceleration, cutting the hesitation common in four-stroke outboards for a strong hole-shot.

High-Output 55-Amp Charging Net

The 55-Amp alternator (40 Amps charging) supports navigation radar, large multi-function displays, and high-draw livewell pumps without draining the starting battery.

5-Year Non-Declining Factory Warranty

This engine carries Honda Marine’s 5-year non-declining limited warranty. Pro Tip: use Honda’s genuine 10W-30 marine oil and regular fresh-water flushing to protect the internal 2.4L block.