Choosing among RC boats with metal propeller upgrades is less about appearance and more about matching the propeller to your boat’s shaft, motor, pitch, and rotation direction. The right fit can improve durability and handling, while the wrong one may overload the motor or fail to mount securely.
This roundup covers metal propellers, propeller kits, and compatible replacement parts in several diameters, blade counts, shaft sizes, and clockwise or counterclockwise configurations. Use the guide below to narrow the options before ordering.
Best 10 Rc Boats with Metal Propeller Picks for 2026
Complete Metal Upgrade Kit
UDIRC Arrow 5 Metal Propeller Set
- Five-piece metal conversion kit
- Includes propeller and rudder components
- For compatible UDIRC Arrow 5 models
Best For: UDIRC Arrow 5 owners upgrading multiple plastic parts
CNC Aluminum Propeller
42mm Left-Hand RC Speed Boat Prop
- 7075 aluminum alloy construction
- CNC-made for strength and balance
- 42mm left-hand, 4.76mm shaft size
Best For: RC racing boats needing a matching left-hand prop
Flexible Nylon Spares
- Three two-blade propellers
- 35mm diameter with 4mm hole
- Flexible, impact-resistant nylon
Best For: DIY projects and compatible boats needing spare props
Large Four-Blade Propeller
67mm Aluminum Alloy RC Boat Prop
- Four-blade aluminum alloy design
- 67mm diameter with 1.7 pitch
- Fits a 1/4-inch shaft specification
Best For: Larger petrol and speed racing boats
Performance Upgrade
- 4mm inner hole for compatible UDIRC Arrow models
- Metal construction for wear resistance
- Single propeller with high-thrust design
Best For: UDIRC Arrow 5 owners needing a durable replacement
Versatile Replacement
Fielect 32mm Aluminum Propeller
- Two-blade aluminum-alloy construction
- 3mm hole and 32mm diameter
- 1.4mm pitch for compatible RC boats
Best For: Compact propeller repairs and replacements
Large-Diameter Option
- Two-blade metal propeller design
- 40mm diameter with 4mm shaft size
- Left-hand configuration for compatible boats
Best For: Left-side RC boat propeller replacements
Heavy-Duty Metal Upgrade
Gold-Plated 4-Blade Metal Propeller
- Cast zinc-alloy construction
- 55mm or 60mm diameter choices
- Left- or right-hand rotation options
Best For: Heavy RC boats, tugs, bait boats, and ROVs
Three-Blade Replacement
- Pair with CW and CCW options
- 4mm shaft and 36mm diameter
- Three-blade, 1.4-pitch design
Best For: Compatible RC boats needing lightweight nylon replacements
Complete Metal Upgrade Kit – UDIRC Arrow 5 Metal Propeller Set
For owners seeking RC boats with metal propeller components, this five-piece conversion kit upgrades key parts of compatible UDIRC Arrow 5 boats. It includes a metal propeller, rudders, water knife, and other fixed components intended to support smoother, more stable operation.
Best For: UDIRC Arrow 5 005, UDI005, and UDI022 owners replacing compatible plastic parts with metal components.
Pros:
- Includes five metal upgrade components in one package.
- Features a metal propeller, tail rudder, navigation rudder, and pressure-related parts.
- Designed as a conversion kit for compatible UDIRC Arrow 5 models.
Cons:
- Compatibility is limited to specified UDIRC Arrow 5 models.
- It is an upgrade-parts kit, not a complete RC boat.
This is the most comprehensive option here for a compatible UDI boat, especially if you want several metal replacement parts together rather than a propeller alone. Confirm your model before ordering.
CNC Aluminum Propeller – 42mm Left-Hand RC Speed Boat Prop
This CNC-machined aluminum propeller is a focused replacement option for RC boats with metal propeller upgrades. Made from 7075 aluminum alloy, it has a 42mm left-hand configuration and is intended for racing boats, hydroplanes, catamarans, and similar models.
Best For: RC racing boat owners who need a 42mm left-hand propeller with a 4.76mm shaft size.
Pros:
- Made from 7075 aluminum alloy with an anodized gold finish.
- CNC construction is designed for high hardness, strength, and balance.
- Suitable for several RC boat styles, including hydroplanes and catamarans.
Cons:
- This listing is for one propeller.
- Correct sizing and rotation must be confirmed before purchase.
- The listed configuration is specifically left-hand and 42mm.
Choose this prop when your boat matches the 42mm, 4.76mm-shaft, left-hand specification. Its aluminum construction makes it a targeted performance-oriented replacement, but sizing is essential.
Flexible Nylon Spares – 35mm CW RC Boat Propellers
While not a metal propeller, this three-piece nylon set is a practical spare option for compatible RC boats and DIY ship models. Each two-blade propeller measures 35mm in outside diameter, uses a 4mm mounting hole, and has a clockwise rotation.
Best For: DIY builders and RC boat owners who need multiple 35mm clockwise replacement propellers.
Pros:
- Includes three replacement propellers.
- Flexible nylon offers impact resistance and corrosion resistance.
- Clearly specified 35mm diameter, 40mm pitch, and 4mm mounting hole.
Cons:
- Nylon construction does not provide the metal-propeller material requested.
- Only the clockwise, two-blade configuration is listed.
- Fit depends on matching the boat’s shaft and propeller dimensions.
This set is best treated as a budget-friendly spare solution rather than a metal upgrade. Its flexible nylon construction may suit boats exposed to debris, provided the dimensions match.
Large Four-Blade Propeller – 67mm Aluminum Alloy RC Boat Prop
Mxfans 4 Leaves Dia 67mm P1.7 RC Boat Aluminum Alloy Propeller with 1/4" Shaft
Check Price On AmazonFor larger petrol or speed racing boats, this four-blade aluminum alloy propeller offers a substantial 67mm diameter and a 1.7 pitch. It is designed for a 1/4-inch shaft and provides a metal-propeller option for compatible RC boat setups.
Best For: Remote-control petrol boats and speed racing boats using a 1/4-inch shaft.
Pros:
- Aluminum alloy construction with four blades.
- Large 67mm diameter and 1.7 pitch specification.
- Designed for a 1/4-inch, or 6.35mm, shaft aperture.
Cons:
- Only one propeller is included.
- Its large size may not suit smaller RC boats.
- Compatibility requires a matching 1/4-inch shaft.
This is a specialized choice for larger, higher-powered RC boat applications rather than compact models. Verify the shaft, diameter, and pitch before buying to avoid a mismatch.
Performance Upgrade – UDI Arrow Metal Propeller
If you are shopping for rc boats with metal propeller upgrades, this 4mm replacement is designed for UDIRC Arrow 5 models, including the UDI005 and UDI022. Its metal construction and larger thrust profile make it a practical replacement for improving durability and control performance.
Best For: UDIRC Arrow 5 owners seeking a tested metal propeller upgrade with a 4mm inner hole.
Pros:
- Designed for UDIRC Arrow 5 005, UDI005, and UDI022 boats
- Metal construction is more wear-resistant than standard plastic-style parts
- Large thrust can help improve remote-control boat performance
- Installs with an M4 nut and is simple to fit
Cons:
- Only one propeller is included
- Compatibility should be confirmed for boats outside the listed models
- It is intended for outdoor RC boat use rather than a complete boat kit
This is a focused upgrade rather than a universal propeller. It is especially appealing when you own a compatible UDI Arrow boat and want a durable metal replacement with straightforward installation.
Versatile Replacement – Fielect 32mm Aluminum Propeller
For RC boat owners looking for rc boats with metal propeller replacement parts, this Fielect propeller uses a two-blade aluminum-alloy design. It has a 3mm hole, 32mm diameter, and 1.4mm pitch for compatible ship models.
Best For: Repairing or replacing a compatible RC boat propeller with a compact aluminum two-blade paddle.
Pros:
- Made from durable aluminum alloy
- Two-blade design with a 32mm diameter
- 3mm hole and 1.4mm pitch are clearly specified
- Designed for straightforward installation and replacement
Cons:
- Only one propeller is included
- Compatibility depends on matching the 3mm hole and dimensions
- The listing identifies it as a CCW, positive paddle propeller
Its clearly listed measurements make fit checking relatively simple. Confirm the shaft size, rotation, diameter, and pitch before ordering, particularly if you are replacing a propeller on a specific model.
Large-Diameter Option – 40mm Left Metal Propeller
This 40mm left-hand propeller is a straightforward option for shoppers comparing rc boats with metal propeller parts. It features a two-blade metal design, a 4mm shaft size, and a 1.4 pitch for compatible RC boats.
Best For: RC boat owners who need a left-side, two-blade metal propeller for a 4mm shaft.
Pros:
- 40mm propeller diameter suits compatible larger propeller setups
- Metal construction offers a durable replacement option
- 4mm shaft size is clearly identified
- Includes a screwdriver according to the product details
Cons:
- Left-hand orientation limits compatibility
- Only one propeller is included
- Fit must be checked against the boat’s shaft and propeller dimensions
The key buying consideration is orientation: this is specifically identified as a left propeller. Verify the 40mm diameter, 4mm shaft size, and required rotation before purchasing.
Compact Replacement Pair – 30mm Black Plastic Propellers
For shoppers comparing rc boats with metal propeller components, this set is a lightweight plastic alternative for compatible small boats. It includes CW and CCW propellers with a 3.17mm shaft fit and 30mm rotating diameter.
Best For: Small RC boats needing replacement propellers in both rotation directions.
Pros:
- Includes four propellers—two pairs in the package.
- Provides CW and CCW rotation options.
- Fits a 3.17mm (1/8-inch) shaft and measures 30mm in diameter.
Cons:
- Made from plastic rather than metal.
- Compatibility depends on matching the shaft and propeller dimensions.
This is a practical, budget-oriented replacement set when you need multiple black propellers for a compatible RC boat, but it is not the choice for buyers specifically seeking metal construction.
Heavy-Duty Metal Upgrade – Gold-Plated 4-Blade Metal Propeller
Among rc boats with metal propeller options, this zinc-alloy model is designed for heavier RC boats, tugs, fishing bait boats, and ROVs. Its four-blade design, gold-plated finish, and 4mm shaft compatibility make it a purpose-built upgrade for suitable setups.
Best For: Heavy RC boats and model vessels using a 4mm shaft and requiring a left-hand or right-hand metal propeller.
Pros:
- Constructed from cast zinc alloy for marine model applications.
- Four-blade design is intended to provide smooth thrust.
- Available in 55mm or 60mm diameters and left- or right-hand rotation.
- Gold-plated finish adds visual appeal.
Cons:
- Requires balance adjustment via the drive dog.
- The 4.15mm hole is intended for 4mm shafts and must be secured with fixing nuts.
- Only the selected size and rotation option is included.
This is the strongest match in the group for buyers specifically seeking a metal propeller, provided the shaft, diameter, rotation direction, and installation hardware match the boat.
Three-Blade Replacement – 36mm Nylon Propeller Pair
When comparing rc boats with metal propeller replacements, this pair offers a lightweight nylon alternative for boats using a 4mm shaft. The three-blade, 36mm design has a 1.4 pitch and is supplied with CW and CCW rotation options.
Best For: RC boat owners seeking a two-piece nylon replacement set for a compatible 4mm shaft.
Pros:
- Includes one pair of propellers.
- Supports CW and CCW rotation.
- Uses a 4mm shaft and 36mm rotating diameter.
- Made from nylon plastic described as resistant to breaking.
Cons:
- Made from nylon plastic rather than metal.
- Only two propellers are included.
- Buyers must verify the 36mm diameter and 1.4 pitch for compatibility.
This pair suits straightforward propeller replacement on compatible RC boats, but shoppers wanting the durability or construction of a metal propeller should consider a different option.
How We Picked the Best Rc Boats with Metal Propeller
We selected these options based on the specifications that matter most for model-boat compatibility: shaft or hole diameter, propeller diameter, pitch, blade count, construction material, and rotation direction. The list includes complete metal upgrade kits as well as individual aluminum, zinc-alloy, and other replacement propellers.
Because compatibility varies widely between RC boats, we treated fit and clearly stated dimensions as more important than appearance alone. Always compare the listing measurements with your original propeller and the boat manufacturer’s specifications.
Quick Comparison
| What to compare | Common options in this roundup | Why it matters |
|---|---|---|
| Material | Aluminum, zinc alloy, metal kits | Metal generally offers better impact resistance than basic plastic. |
| Shaft or hole size | 3 mm, 3.17 mm, 4 mm, 4.76 mm, 1/4 inch | The propeller must mount securely without excessive play. |
| Diameter | 30 mm to 67 mm | Larger props can increase thrust but may demand more motor power. |
| Rotation | CW, CCW, left-hand, right-hand | Incorrect rotation can reduce performance or affect steering. |
| Blade count | Two, three, or four blades | Blade count affects acceleration, load, smoothness, and efficiency. |
Key Buying Factors for Rc Boats with Metal Propeller
Confirm the Shaft and Mounting Dimensions
Measure the shaft diameter or the propeller’s center hole before buying. A 4 mm propeller is not interchangeable with a 3.17 mm or 4.76 mm model without the correct adapter, and inch-based measurements can be easy to confuse with metric sizes.
Match Diameter and Pitch to the Motor
Diameter and pitch determine how much water the propeller moves and how hard it loads the motor. A larger or higher-pitch prop may provide more potential speed or thrust, but it can also increase current draw, heat, and battery consumption. Stay close to the original specification unless your boat is designed for experimentation.
Choose the Correct Rotation
Check whether your boat requires clockwise or counterclockwise rotation when viewed from the rear or according to the manufacturer’s labeling. Some listings include both directions, while others sell only a left-hand or right-hand propeller.
Consider Blade Design and Material
Two-blade props often prioritize efficiency, while three- and four-blade designs may offer stronger low-speed thrust or smoother operation at the cost of additional drag. Aluminum and zinc-alloy parts can withstand bumps better than many stock plastic props, but they may transfer more impact to the shaft and drivetrain.
Who Should Buy Which Rc Boats with Metal Propeller?
Choose a complete metal upgrade kit if you own a compatible UDI Arrow or UDIRC model and want several matching replacement parts. Select a two-blade aluminum propeller for a straightforward durability upgrade on a racing boat or hydroplane. Smaller 30–36 mm options suit compact models, while 40–45 mm props are common choices for medium-sized boats when the shaft and motor specifications match.
Four-blade or larger propellers are best for experienced hobbyists who understand motor loading and want to tune thrust or handling. If you are replacing a damaged stock propeller, prioritize an exact dimensional and rotation match over the largest or most aggressive design. After installation, inspect clearance, tighten the hardware, and test briefly for vibration or excessive motor heat.