SKU: 81687498888

Turning Point Express Mach4 - Left Hand - Stainless Steel Propeller - EX-1421-4L - 4-Blade - 14" x 21 Pitch [31502141]

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Description

Turning Point Express Mach4 - Left Hand - Stainless Steel Propeller - EX-1421-4L - 4-Blade - 14" x 21 Pitch [31502141]Express Mach4 Left Hand Stainless Steel Propeller EX 1421 4L 4 Blade 14" x 21 Pitch The Prop that put the "four" in Perfourmance! Turning Point's Four Blade revolutionized the propeller market when it was introduced. No one had ever produced a propeller with two different blade shapes (they call it Dual Geometry) for 90 300+hp applications. This prop is uniquely engineered with two blade geometries: (diagram label 2)two blades utilize the Hustler high

Express® Mach4™ - Left Hand - Stainless Steel Propeller - EX-1421-4L - 4-Blade - 14" x 21 Pitch

The Prop that put the "four" in Perfourmance! Turning Point's Four Blade revolutionized the propeller market when it was introduced. No one had ever produced a propeller with two different blade shapes (they call it Dual Geometry) for 90-300+hp applications. This prop is uniquely engineered with two blade geometries: (diagram label 2)two blades utilize the Hustler high performance variable rake and aggressive pitch design for incredible hole shot and cornering, and (diagram label 1) two blades utilize an offshore style design for high speed and maximum stern lift.

These props re-wrote the rules, proving that you can run a four blade that has unprecedented hole shot, handling, and rough water stability without the top-end speed loss you experience with other manufacturers’ propellers.

Now manufactured in our Industry leading TP17 stainless, the Express Mach4 series is perfect for any application that demands enhanced acceleration, cornering, and load carrying capabilities. This prop series is ideally suited for watersports, sterndrive boats, tri-toons, bay boats, and any vessel that can use stern lift. It is our best upgrade of older stainless designs from the 70’s, 80’s, 90’s, and ’00’s, and will outrun most newer props, including five blade ski props.

Proprietary Stainless Steel, TP17™

Formulated to meet the exacting requirements of the New Express Mach3 and Mach4 designs. 20% higher chromium content than the competition - more shine, better corrosion resistance. Almost 250% Stronger and 5X more durable than run-of-the-mill stainless steel. This new material allows Turning Point's Engineers and Designers the freedom to produce radical new designs that will help you wring the most performance out of your boat.

Large Free Flowing Exhaust Ports

Turning Point's Propeller Housings have massive Exhaust flow pathways. Their Propellers have 40% more exhaust flow Area versus competitive product. More exhaust flow and less backpressure can generate more horsepower. Like headers for your boat.

Turning Point manufactures Express propellers to fit 9.9(bigfoot)-300+hp Evinrude®, Force®, Honda®, Johnson®, Mariner®, Mercruiser®, Mercury®, Nissan®, OMC®, Parsun®, Suzuki®, Tohatsu®, Volvo® Penta®, and Yamaha® Outboards and Sterndrives. Choose one of our Lifetime Warranty MasterGuard Installation Kits to fit your engine, then choose the propeller that matches your boating requirements. There are 3 and 4 blade, left and right rotation prop models with a variety of diameter and pitch options available for almost all boat types. Turning Point's Props Run Faster, Pull Harder, and Handle Better.

Note: A Hub Kit is required for installation of this propeller. See the Turning Point Selection Chart or the Prop Wizard™ for hub kit selection.

WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

  • Pitch: 21
  • Material: Stainless Steel
  • Diameter (Inches): 14"
  • Rotation: Left
  • Box Dimensions: 8"H x 16"W x 16"L WT: 16.6 lbs
  • UPC: 652480200908

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Exchange/Return Notes
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SKU: 81687498888

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Amazon Customer
Waukegan, US
★★★★★ 5
Exactly what they say it is.
Size: 72"W x 72"L (Pack of 1), Color: 1b. Clear-heavy
Appears to work exactly as advertised, and quality is very satisfactory, which is always a pleasant surprise on Amazon. Magnets are strong enough, plastic feels pliable and durable. Don't forget the rings aren't included.
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Reviewed in the United States on May 20, 2026
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gbrock
Cuba, US
★★★★★ 5
Perfect Weight
Size: 72"W x 72"L (Pack of 1), Color: 1a. Clear
Is a perfect liner. It’s not super thick or heavy. Easy to hang.
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Reviewed in the United States on May 26, 2026
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Andrea Santiago
Whiting, US
★★★★★ 5
Good shower liner
Size: 72"W x 72"L (Pack of 1), Color: 1a. Clear
Actually works! No soap scum or mildew. I have had this shower curtain up since December and all I do is rinse it off. No soap scum. Good item. Good value.
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Reviewed in the United States on May 15, 2026
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JS
Charlottesville, US
★★★★★ 4
Too lightweight and flimsy, but it does the job
Size: 72"W x 72"L (Pack of 1), Color: 1a. Clear
This shower liner works as expected, but it is a bit lightweight, and will drift around in the shower. I will look at getting a more heavy duty one in the future. This one has the 3 magnets, and that isn't enough. I would recommend getting one with double the magnets and a thicker plastic. I went cheap and regret it slightly, but at least these things are made to be disposable. Other than that, the durability seems good, and it looks and feels like you would expect, but as stated, the plastic is flimsy and flutters around. Seems fairly mold resistant vs other liners I've used from the store (like cheaper Walmart ones etc).
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Reviewed in the United States on March 8, 2026
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LF
West Palm Beach, US
★★★★★ 5
Simple Shower Liner That Works Well
Color: 1a. Clear, Size: 72"W x 72"L (Pack of 1)
This clear shower curtain liner does exactly what it’s supposed to do. The material feels flexible without being overly thin or flimsy, and it hangs nicely once installed. The three magnets at the bottom help keep the liner in place and reduce the amount of movement while showering, especially in tubs with metal sides. The reinforced top holes also seem durable enough to handle regular opening and closing without tearing. The clear design keeps the bathroom feeling brighter and more open compared to opaque liners. It’s easy to wipe down and clean as needed. Overall, this is a solid basic shower liner with good durability and useful magnetic weighting.
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Reviewed in the United States on May 14, 2026

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