OJ 805-MF Prop Blade Wakepro 14.75X15.25-4

( Brand: Oj ), ( Manufacturer Part Number: 805-MF ), ( Part Type: Prop Blade ), ( Propeller Pitch: 14.75 ), ( Propeller Rotation: Counter ), ( Country Of Origin: United States )

Review OJ Prop 14.75x15.25-4 Blade Wakepro

The **OJ 805-MF Prop** is a high-performance marine propeller designed for maximum efficiency, durability, and adaptability across a wide range of recreational and performance boats. Engineered with a **14.75-inch diameter and 15.25-inch pitch**, this **four-blade (4-blade) propeller** strikes an optimal balance between speed, fuel economy, and handling, making it an ideal choice for wakeboarders, waterskiers, and enthusiasts seeking a smooth yet responsive ride. The **Prop 14.75x15.25-4** features a **high-expansion ratio (ER) design**, which enhances thrust efficiency while minimizing cavitation, ensuring consistent performance even under heavy loads. Its **marine-grade stainless steel construction** (typically 316 or 4140 alloy) delivers exceptional corrosion resistance, making it well-suited for saltwater environments where rust and pitting can quickly degrade inferior propellers. The **asymmetrical blade design** of the 805 series optimizes flow dynamics, reducing drag and improving acceleration, which translates to quicker planing and a more stable ride at higher speeds. This propeller is particularly well-suited for **inboard-outboard (I/O) and sterndrive applications**, including those with **400 700 horsepower engines**, where its robust construction and efficient blade geometry help maintain performance without excessive wear. Whether towing a wakeboarder, a skier, or simply cruising for speed, the **OJ 805-MF Prop** delivers a blend of power, precision, and longevity, ensuring both thrilling performance and long-term reliability on the water.

The **OJ 805-MF Prop** (14.75x15.25-4 blade, designed for the **WakePro 805**) is a popular choice for wakeboarding and slalom skiing due to its balance of performance, durability, and affordability. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the OJ 805-MF Prop**

1. **Strong Performance for Wakeboarding and Slalom**

- The **14.75x15.25** pitch is well-suited for wakeboarding, offering a good mix of **pull and drive** without being overly aggressive. This makes it versatile for both **wakeboarding and slalom skiing**, though it leans slightly more toward wakeboarding.

- The **4-blade design** provides a smooth, stable pull, reducing vibration and improving rider comfort at higher speeds.

- The **MF (Medium-Fine) pitch** is a balanced choice finer than a standard wakeboard prop but not as aggressive as a high-performance slalom prop. This makes it a great all-around option for riders who switch between disciplines.

2. **Durability and Build Quality**

- OJ props are known for their **heavy-duty construction**, with **high-quality materials** that resist warping, cracking, and corrosion.

- The **reinforced hub and blade design** helps prevent damage from rocks, debris, or hard landings, making it a **long-lasting prop** for frequent use.

- The **balanced weight distribution** reduces stress on the drive shaft, extending the life of your outdrive.

3. **Affordability Compared to High-End Brands**

- The OJ 805-MF is **significantly cheaper** than premium props from brands like **Kawasaki, Yamaha, or Mercury high-performance models**, yet still offers **pro-level durability and performance**.

- It s an **excellent budget-friendly option** for riders who want a prop that won t break the bank but still delivers solid results.

4. **Easy to Install and Maintain**

- The **standard 14.75x15.25 pitch** means it s compatible with most **14.75" drive shafts**, making installation straightforward.

- Cleaning and maintenance are simple just rinse with fresh water after use to prevent saltwater corrosion (if applicable).

5. **Good for Beginners and Intermediate Riders**

- The **MF pitch** is forgiving for **new riders**, providing a **smooth, consistent pull** without overwhelming them.

- Intermediate riders will appreciate the **versatility** for both **wakeboarding and slalom**, making it a **great all-around prop**.

6. **Positive User Feedback**

- Many riders report **consistent performance** in terms of **pull strength, stability, and durability**. While it s not a **world-class slalom prop**, it holds its own well for wakeboarding and casual slalom.

- The **OJ brand has a strong reputation** for reliability, which is reflected in this model.

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### **Cons of the OJ 805-MF Prop**

1. **Not a High-Performance Slalom Prop**

- While it works well for **wakeboarding and light slalom**, it **lacks the aggressive pitch and fine tuning** of **top-tier slalom props** (e.g., **Kawasaki 14.75x15.5-4 or Yamaha 14.75x15.75-4**).

- If you **compete in slalom or do high-speed tricks**, you may find it **less responsive** compared to specialized slalom props.

- The **MF pitch is slightly broader** than ultra-fine slalom props, which can lead to **less drive at high speeds**.

2. **Limited Customization Options**

- Unlike some high-end props (e.g., **Kawasaki or Mercury**), the OJ 805-MF **doesn t offer interchangeable blades or fine-tunable pitches**.

- If you want to **adjust performance** (e.g., for different water conditions or rider weights), you ll need to **replace the entire prop**, which is less convenient.

3. **Potential for Vibration at High Speeds**

- Some riders report **mild vibration** at **high wakeboard speeds (above 25 mph)**, though this is **not extreme** and can be mitigated by **proper drive shaft alignment and balance**.

- If you re a **heavy rider or use a high-torque outdrive**, you might notice **slightly more vibration** compared to a **premium prop**.

4. **Not as Lightweight as Some Competitors**

- While still **durable**, the OJ 805-MF is **heavier** than some **carbon or high-end aluminum props**, which can lead to **slightly less efficiency** in terms of **pull strength per pound**.

- However, the difference is **minor** and doesn t significantly impact performance for most riders.

5. **Limited Availability of Replacement Parts**

- If the prop **warps or cracks**, finding **OEM replacement blades** may be **harder** than for brands like **Kawasaki or Yamaha**, which have **broader aftermarket support**.

- Some riders have reported **difficulty finding exact replacements**, though OJ does offer **remanufactured props** as an option.

6. **Not Ideal for Extreme Conditions**

- While **durable**, it s **not built for extreme abuse** (e.g., **constant rock hitting, deep water starts, or heavy-duty slalom competition**).

- In **very rough conditions**, a **premium prop** (e.g., **Kawasaki or Mercury**) may last longer with **less wear and tear**.

---

### **Conclusion**

The **OJ 805-MF Prop (14.75x15.25-4)** is a **strong, reliable, and affordable** choice for **wakeboarding and casual slalom skiing**. It strikes a **good balance between performance, durability, and cost**, making it an **excellent option for beginners, intermediate riders, and those who want a no-frills prop without breaking the bank**.

- **Wakeboarders** who want a **smooth, stable pull** without excessive vibration.

- **Slalom skiers** who do **light to moderate competition** and don t need **ultra-fine tuning**.

- **Riders who prioritize durability and longevity** over **high-end performance**.

- **Budget-conscious buyers** who still want a **pro-level prop** without the premium price.

- **Serious slalom competitors** who need **maximum drive and responsiveness**.

- **Riders who frequently hit rocks or abuse their props** (a **premium brand** may be better).

- **Those who want fine-tunable or interchangeable blades** for customization.

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### **Final Recommendation**

You **wakeboard regularly** and want a **reliable, durable prop** that won t cost a fortune.

You **occasionally do slalom** but don t need a **high-performance slalom prop**.

You **prioritize longevity and ease of maintenance** over **cutting-edge performance**.

You re on a **budget** but still want a **high-quality prop** that holds up well.

You **compete in slalom at a high level** and need **maximum drive and fine tuning**.

You **hit rocks frequently** and want the **best possible durability** (consider **Kawasaki or Mercury**).

You **want interchangeable blades or customizable pitches** (look at **premium brands**).

You **prefer a lighter, more high-performance prop** for **speed and responsiveness**.

- **For Wakeboarding:** **OJ 805-MF** (best value) or **Kawasaki 14.75x15.5-4** (if budget allows).

- **For Slalom:** **Kawasaki 14.75x15.75-4** or **Yamaha 14.75x15.5-4** (if you need **more drive**).

- **For Extreme Durability:** **Mercury Verado or Kawasaki Ultra** (if you **abuse your prop**).

**Verdict:** The **OJ 805-MF is an excellent choice** for most **wakeboarders and casual slalom skiers** who want a **durable, affordable, and reliable prop**. If you re **serious about slalom or need premium performance**, investing in a **higher-end prop** may be worth it but for **most riders, the OJ 805-MF delivers great value**.

Details:

Brand new lists for $725-$830 on Wake makers and other sites. Attached rework sheet attached, old owners name blocked out but all other info is original. Bought a boat and had this prop in it won't fit with the current set up. The Wakepro V-3 propellers boast an enhanced pitch distribution along with a new blade shape that produces better top end and low power.

By refining OJ Propellers original superior design, they have produced their finest performing line of propellers. Providing the best of speed and pulling power, Wakepro V-3 outruns over powers competition. Considering history, this price seems fair.

part #: 805 prices

• $400.00-$790.00

specifications propboapar:

• brand: Oj
• mpn: 805-mf
• part type: Prop Blade
• propeller pitch: 14.75
• propeller rotation: Counter
• country of origin: United States

seller propboapar:

• # reviews: 32
• city: North Liberty, Iowa
• rating: 100.0%

payments propboapar:

• credit card: Discover
• other
• wallet: Apple-pay

offer propboapar:

• quantity: 1
• availability: In Stock
• sold: 0
• best offers: True
• options: Ship-to-home
• started: April 6, 2026

shipping propboapar:

• class: Standard
• carrier: USPS
• cost: $11.31
• service: USPS Ground Advantage
• transit: 3-8 Days
• type: Calculated

general propboapar:

• condition: Remanufactured
• Parts Accessories > Boat Parts > Propellers

returns propboapar:

• policy: No Returns

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