The Yamaha T9.9XPHB (High Thrust) is the industry-leading auxiliary power solution for sailboats and large offshore fishing vessels. Engineered specifically to move heavy displacement hulls, this engine features the patented Dual Thrust™ propeller and a high-torque gearcase. With its 25-inch extra-long shaft and Electric Start, the T9.9XPHB provides massive displacement authority and effortless operation, making it the ultimate "kicker" engine for precision trolling and emergency backup.
Technical Specifications
| Model Number / MPN |
T9.9XPHB |
| Horsepower |
9.9 HP @ 5500 RPM |
| Shaft Length |
25 Inches (Extra Long Shaft) |
| Engine Type |
Inline 2-Cylinder / 4-Stroke SOHC |
| Control Type |
Tiller Handle (Integrated Shift/Throttle) |
| Starting System |
Electric Start (with Manual Backup) |
| Gear Ratio |
2.92:1 (High Thrust Optimized) |
| Dry Weight |
Approx. 114 lbs (52 kg) |
Maximum Pushing Power & Control
- Dual Thrust™ Propeller: Redirects exhaust away from the blades in reverse, providing incredible bite and maneuverability for heavy boats.
- High-Torque Gearcase: Features a 2.92:1 ratio that allows the engine to swing a larger propeller, delivering 60% more forward thrust than standard models.
- Power Tilt System: Features a high-speed hydraulic tilt to lift the engine out of the water quickly when not in use.
- Integrated Tiller Handle: Ergonomic center-mounted tiller with integrated shift, throttle friction, and electric start button.
- 6-Amp Alternator: High-output charging system ensures your starting battery remains charged while powering sonar and lights.
The Benchmark for Heavy Displacement Hulls
The Yamaha T9.9XPHB is built for the long haul. Its 25-inch shaft ensures the propeller stays deep in the water to prevent cavitation during rough sea conditions. Constructed with Yamaha's proprietary YDC-30 anti-corrosion alloy and high-grade stainless steel components, this high-thrust unit provides the reliability required for offshore sailing and professional fishing. When you need massive pushing power in a compact 4-stroke package, the T9.9 series has no equal.
Frequently Asked Questions
1. Is this motor suitable for a sailboat?
Absolutely. The 25-inch shaft and High-Thrust gearcase are specifically designed to provide the necessary torque for docking and maneuvering heavy sailboats in wind and current.
2. Does it include a fuel tank and line?
Yes. Standard equipment includes a 3-gallon (12L) external fuel tank and the required fuel line with quick-connect fittings.
Marine Equipment Specialist | Genuine Provider | High Thrust Sailing Power
