Honda 225HP BF225DK1UDA iST Outboard – 30″ Shaft
The 225-horsepower Honda BF225DK1UDA iST outboard uses a 30-inch shaft for compatible high-transom installations. Its electronic iST control supports precise throttle and shift commands, while the shaft length helps maintain propeller depth and effective thrust transfer.
Description
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Honda 225HP BF225DK1UDA iST Outboard Motor Specs
| Brand | Honda Marine |
| Full Model Code / Part Number | BF225DK1UDA (Standard Rotation / iST / 30" Shaft) |
| Country of Origin | Japan / USA |
| Engine Type & Configuration | 4-Stroke SOHC 60° V6 (24-Valve VTEC) |
| Horsepower Output (HP / kW) | 225 HP (168 kW) |
| Displacement (cc / cu in) | 3583 cc (219 cu in) |
| Bore x Stroke (mm / in) | 89.0 x 96.0 mm (3.50 x 3.78 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5000 - 6000 RPM |
| Fuel Induction System | Programmed Fuel Injection (PGM-FI) |
| Ignition System | Microcomputer Controlled Transistorized |
| Starting System | Electric Start with Intelligent Shift & Throttle (iST) |
| Steering System | Electronic Remote Control / iST Compatible |
| Trim & Tilt System | Power Trim & Tilt |
| Gear Ratio & Shift Mechanism | 1.86:1 (Standard Rotation / F-N-R) |
| Exhaust System | Through Prop Hub |
| Recommended Transom Shaft Length | XXL: 30 inches |
| Alternator / Charging Output (Amps / Watts) | 90 Amp (Total / 60 Amp Battery Charging) / 1080 Watts |
| Recommended Fuel Grade & Oil Type | Regular Unleaded (Min. 86 Octane) / Honda 4-Stroke FC-W 10W-30 |
| Dry Weight (kg / lbs) | 287 kg / 633 lbs |
| Standard Warranty | 5 Years Limited Pleasure Warranty |
Common Question of Honda BF225DK1UDA
Does BF225DK1UDA use iST?
Yes. The Honda BF225DK1UDA uses Intelligent Shift and Throttle for compatible electronic gear selection and throttle commands. Its 225-horsepower four-stroke powerhead uses an electronic fuel injection system, while the 30-inch shaft suits tall-transom boats. Properly equipped, it functions as a high performance outboard motor for helm-controlled operation.
What boats need a 30-inch shaft?
Boats with a matching 30-inch transom are the intended application for this UDA model. Measure the hull carefully before purchase and follow the boat manufacturer’s recommendation. Correct shaft depth supports cooling-water pickup, gearcase position, propeller immersion, steering response, and trim performance. Proper fitment is required for this ready to bolt marine outboard.
Does it require electronic controls?
Yes. The iST system requires compatible electronic controls, wiring harnesses, gauges, battery capacity, steering equipment, and correct rigging. Conventional mechanical cables may not provide the intended engine interface. Confirm complete system compatibility before purchase so the Honda 225-horsepower four-stroke powerhead delivers dependable shift and throttle response.
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