Best Lightest 5HP Outboard Motors for Small Boats
Direct answer: the lightest 5HP-class outboard motors are compact, low-weight models around 20–22 pounds, designed for inflatable boats, kayaks, and small dinghies. They prioritize portability, easy mounting, and simple fueling. This guide highlights five lightweight options closest to a 5HP target, suitable for solo paddlers, anglers, or travelers who value easy handling and quick deployment.
Who this is for: best for ultralight setups, coastal and lake use, and those who need quick on/off installation. The top picks emphasize small footprints, push-button or manual starts, and dependable heat management for short trips. A quick summary table below helps compare key attributes at a glance.
| Product | Horsepower | Weight (approx.) | Fuel Type | Best For |
|---|---|---|---|---|
| Gosangom 3.5HP Outboard | 3.5 HP | ~21.6 lbs | Gasoline | Small inflatable boats and kayaks; portable trolling |
| Knwigoe 3.5HP Outboard | 3.5 HP | ~21.6 lbs | Gasoline | Lightweight boats; short trips; easy transport |
| 4 Stroke 7.5HP Outboard (200CC) | ~3.5 kW / 4-stroke | Unknown (compact) | Gasoline | Compact power for small to mid-size inflatables |
| Goudergo 6.5HP 4-Stroke | 6.5 HP | Lightweight | Gasoline | Inflatables and small boats needing extra thrust |
| HASANEN 6.5HP 4Stroke | 6.5 HP | Lightweight | Gasoline | Inflatable boats and dinghies seeking reliable power |
Gosangom 3.5HP Outboard Motor
Type: 2-stroke, short shaft, water-cooled CDI system. Weight is lightweight, and the aluminum alloy construction offers corrosion and wear resistance. The motor is designed for rubber boats, inflatable boats, and kayaks. Best for: ultralight craft and frequent short trips where portability matters. Limitation: a 2-stroke design may require mix-fuel and regular maintenance checks for optimal performance.
Knwigoe 3.5HP Outboard Motor
Type: 2-stroke, manual start, water-cooled. Notable for its compact size (about 35.4 x 15 x 7 inches) and weight around 21.6 lbs. Features a 6.7″ three-blade propeller and efficient carburetor. Best for: small craft, kayaks, and occasional short trips where quick handling is essential. Caution: as a 2-stroke, it may require fuel-oil mixing and more frequent maintenance checks than a modern 4-stroke.
4 Stroke 7.5HP Outboard Motor (200CC)
Type: 4-stroke, single cylinder, air-cooled with CDI ignition. Features CVT-like transmission for smooth gear shifting and good heat dissipation with multiple vents. Best for: small boats requiring consistent power with reliable start and simple maintenance. Limitation: not the lightest option in this list, but offers a balance of reliability and power for short-range trips.
Goudergo 6.5HP 4 Stroke Outboard
Type: 4-stroke, 123cc, water-cooled with tiller control and three-position gear shift. Notable for an Infinitely Variable Speed feature and a larger fuel tank. Best for: inflatables and small boats where extra thrust is beneficial for stronger currents or wind. Caution: heavier than 3.5HP options, which may affect portability and mounting on ultra-light crafts.
HASANEN 6.5HP 4Stroke
Type: 4-stroke, 6.5HP with a CDI ignition, water cooling, and infinite speed control. Includes a three-gear cruise system and fuel-tank integration. Best for: small sail or motorized inflatable boats that require steady power. Limitation: higher weight than true 3.5HP ultralight models; consider if you need extra thrust over extended runs.
Buying Guide: Lightest 5HP Outboard Motors
What to consider when choosing a lightweight outboard motor?
- Weight and mounting: Look for models under 22 lbs for easy handling and quick installation on small crafts.
- Engine type: 2-stroke options are lighter but require fuel-moil mix and more maintenance; 4-stroke models offer cleaner operation and easier starting at the cost of extra weight.
- Power vs. load: Smaller inflatables and kayaks need 3.5–6.5HP for adequate thrust; heavier tenders may justify 6.5HP.
- Cooling and durability: Water-cooled systems extend engine life and prevent overheating on longer trips.
- Gear control: Three-position tiller (forward/neutral/reverse) provides better maneuverability in tight spaces.
- Fuel capacity and economy: Consider models with efficient carburetors and fuel tanks suitable for planned trip length.
Frequently Asked Questions
- What is the lightest outboard motor around 5HP?
Many 3.5HP outboards approximate 5HP in perceived power for small boats, with weights around 21–22 lbs. - Are 2-stroke engines worth it for light boats?
They are lighter and cheaper but require fuel-oil mixing and more frequent maintenance. - Is a 6.5HP motor necessary for inflatable boats?
For larger inflatables or when extra thrust is needed in wind, 6.5HP provides better performance. - What should I consider for long-term use?
Look for water cooling, CDI ignition reliability, and a durable aluminum build for saltwater or freshwater use. - Do lightweight motors affect durability?
Some lighter models trade weight for fewer features; ensure the model has adequate heat dissipation and sturdy mounting. - Can I mount a 6.5HP on a kayak?
Most kayaks are designed for lighter outboards; ensure compatible mounting kits and weight limits.