SKU: 4390779998

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

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Description

Turning Point Express® Mach4™ - Left Hand - Stainless Steel Propeller - EX-1421-4L - 4-Blade - 14" x 21 PitchExpress 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.


Manufacturer : Turning Point Propellers
Manufacturer Part No : 31502141
UPC : 652480200908
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SKU: 4390779998

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4.1 ★★★★★
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Verified Purchase
Emmie Ledsinger
Lexington, US
★★★★★ 5
Dogs all beg for them!
Size: 3.5 Ounce (Pack of 1), Style: Chicken Chips
When I first received the package I was concerned about the small size of the crisps & the package itself. Not to worry! They are rather thick, and I had to half them for almost all of the dogs. They must be delicious because the dogs all gather around the corner of the treat table with the chicken chips! It takes them more than 2 seconds to chew, as well. I’m definitely reordering.
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Reviewed in the United States on October 26, 2025
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 4
no dog would resit these...
Flavor Name: Braided Stick (Chicken)
My dogs loved them but they were a lot smaller than I imagined.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
M
M00NCHiLD
Battle Creek, US
★★★★★ 5
Turkey tendon, vitamin E, low in fat, and high in protein. A great little midday snack 😊
Flavor Name: Braided Stick (Chicken)
My dog really liked these iPaw Turkey Tendon Braided Sticks. Every time I gave her one she went nuts and destroyed it in less than 5 mins. She's 80 pounds and for most medium-large dogs it will be the same, they won't last long at all. But I imagine for much smaller dogs they'd probably be a good 10-15 min chew. They have a very mild and almost non-existent smell, and they texture is quite hard and firm, so I would be hesitant to let a dog with missing teeth have one. They may be a bit difficult to chew. My dog hasn't had any upset stomach or diarrhea issues after eating these, which is always something I can keep an eye out for when feeding her something new. So far so good! They've got turkey tendon and vitamin E which are both super nutritional for dogs, and they're low in fat and high in protein which is another huge plus. Especially if your dog has weight issues. They're pretty small and they don't last long, but that's ok, as long as my girl loves them and enjoys them that's all that matters to me. They make for a great little midday snack, and for only $14 I would absolutely purchase them again.
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Reviewed in the United States on March 22, 2026
D
DogO is my nameO
Phoenix, US
★★★★★ 4
Chihuahua and Border Collie Approved
Flavor Name: Braided Stick (Chicken)
We got the iPaw Turkey Tendon Braided Sticks for our two senior pooches, and it’s safe to say they are an absolute hit in our household. Both of our dogs seem to genuinely love the flavor and the "chew" of these. They stayed engaged with the treat until the very last bit was gone. While they are hard, they aren't rock-hard. I was easily able to cut them up with scissors for our Chihuahua, who is missing several teeth. He was able to gum them down without any issues, which is a win for a pup with dental challenges. The only reason I’m giving these 4 stars instead of 5 is the price. They are definitely on the expensive side for the amount you get. Since my dogs go through them so quickly, it’s hard to justify keeping these as a "constant" staple in the pantry, but they make for an excellent occasional high-value treat.
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Reviewed in the United States on March 10, 2026
N
Nightowl
Lowell, US
★★★★★ 5
Dogs loved them, but gone very quickly
Flavor Name: Braided Stick (Chicken)
I picked up these turkey tendon braided sticks as a chew treat for my dogs, and they had zero hesitation. Both dogs were immediately interested and happily worked through them without any convincing. They seem very tasty and easy for dogs to chew, which makes them a nice occasional reward. They seem to be of healthy, quality ingredients, which is always a plus. Similar to some other natural chews I’ve tried, they just don’t last very long with bigger or enthusiastic chewers. What looks like it might be a longer distraction turns into a fairly quick snack in our house. Still, the dogs enjoyed them and tolerated them well, so they work fine as a treat, just not a long lasting chew for large dogs.
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Reviewed in the United States on February 27, 2026

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