Description
Turning Point Mach4 SS Propeller - EX-1421-4 | Boat Supply Store
Engineered for a significant power band upgrade on 90-300+hp outboards and sterndrives, this 4-blade propeller delivers exceptional hole shot and stern lift. Its proprietary TP17™ stainless steel construction ensures superior corrosion resistance and strength. The innovative Dual Geometry blade design provides optimized performance for watersports, tri-toons, and bay boats operating in demanding conditions.
Key Features
- Aggressive hole shot and stern lift from Dual Geometry blade design
- Superior cornering and load-carrying capability
- Ultra-durable TP17™ stainless steel for unmatched corrosion resistance
- Enhanced top-end speed without sacrificing acceleration
- Increased exhaust flow area via large, free-flowing exhaust ports
- High-speed offshore style for stern lift
- Right-hand rotation for standard propulsion
- 14-inch diameter with 21-inch pitch for optimized thrust
Specifications
| Product Specifications | |
|---|---|
| Brand | Turning Point Propellers |
| Product Name | Turning Point Express Mach4™ - Right Hand - Stainless Steel Propeller - EX-1421-4 |
| SKU | CWR56039 |
| BC_ID | 131575 |
| MPN | 31502131 |
| Number of Blades | 4 |
| Material | TP17™ Stainless Steel |
| Rotation | Right Hand |
| Diameter | 14 inches |
| Pitch | 21 inches |
| Engine Application | 90-300+hp Outboard/Sterndrive |
Who This Is For
Boaters seeking a substantial performance increase for their 90-300+hp outboard or sterndrive engine, especially those utilizing their vessel for watersports or operating heavier loads. This propeller is ideal for tri-toons, bay boats, and sterndrive vessels requiring improved acceleration and stern lift.
How It Compares
| Feature | Turning Point Mach4 SS Propeller - EX-1421-4 | Competitor |
|---|---|---|
| Blade Count | 4 | 3, 4 |
| Diameter | 14 inches | 14.5 inches, 14 inches |
| Pitch | 21 inches | — |
| Material | TP17™ Stainless Steel | Stainless Steel, Stainless Steel |
| Blade Design | Dual Geometry (Hustler & Offshore) | Performance-tuned 3-blade, Standard 4-blade |
Common Concerns Answered
What is the primary benefit of the Turning Point Express Mach4 propeller's dual blade geometry?
The Dual Geometry blade design uniquely combines aggressive pitch with variable rake, delivering a superior hole shot and improved cornering agility. This translates to better acceleration from a standstill and more responsive handling during turns.
What types of boats is the Turning Point Express Mach4 propeller best suited for?
This propeller is exceptionally well-suited for boats benefiting from enhanced hole shot and stern lift, including tri-toons, bay boats, and sterndrive vessels. It's also an excellent choice for those involved in watersports requiring quick planing.
Do I need a hub kit with this propeller?
Yes, this propeller requires a specific hub kit for installation. Please consult the Turning Point propeller selection guide or contact us to ensure you select the correct hub kit for your engine, as this is an additional purchase.
Frequently Asked Questions
What is TP17 stainless steel and why is it superior?
TP17™ is Turning Point's proprietary stainless steel alloy, featuring 20% higher chromium content. This composition makes it 250% stronger and 5 times more durable than standard stainless steel, offering exceptional resistance to corrosion and fatigue in harsh marine environments.
How does the large free-flowing exhaust port design benefit my boat's performance?
The large, free-flowing exhaust ports allow for 40% more exhaust flow area compared to competitors. This optimized exhaust scavenging reduces backpressure, enabling the engine to breathe more efficiently, leading to improved throttle response and overall power output.
What is the primary benefit of the Turning Point Express Mach4 propeller's dual blade geometry?
The Dual Geometry blade design uniquely combines aggressive pitch with variable rake, delivering a superior hole shot and improved cornering agility. This translates to better acceleration from a standstill and more responsive handling during turns.
What types of boats is the Turning Point Express Mach4 propeller best suited for?
This propeller is exceptionally well-suited for boats benefiting from enhanced hole shot and stern lift, including tri-toons, bay boats, and sterndrive vessels. It's also an excellent choice for those involved in watersports requiring quick planing.
Is this propeller compatible with my specific outboard or sterndrive engine?
This Turning Point Express Mach4 propeller is designed for 90-300+hp outboard and sterndrive applications. For precise fitment and optimal performance, it is critical to select the correct hub kit for your specific engine model. Consult the propeller selection guide for detailed compatibility.
