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Description
Manley Ford 351C 2.190 Inch Head Diameter / .341 Inch Stem / 5.244 Inch Length ( Set of 8)Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust valves, tested at 40,000 psi and 1400? F, impressively endured up to 100,000,000 (one hundred million) cycles. In contrast, competitors' offerings failed after just 100,000 cycles, showcasing a
Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat, this stress soars to 40,000 to 60,000 lbs. Manley exhaust valves, tested at 40,000 psi and 1400?F, impressively endured up to 100,000,000 (one hundred million) cycles. In contrast, competitors' offerings failed after just 100,000 cycles, showcasing a staggering 1000 times better fatigue life.Designed for High Temperature Gasoline Engines: Engineered for superior performance in high-temperature gasoline engines.Chrome Stems and Hard Tips: Incorporating chrome stems and hard tips for enhanced durability and longevity.Optimized Combustion: Swirl polished under head areas and fully machined combustion faces for improved airflow and combustion efficiency.XH-428 for Exhaust: No competitor worldwide offers the exceptional XH-428 as exhaust valve material. It boasts nearly double the ultimate tensile strength at 1500?F compared to the competition's EV-8.NK-844 for Intake: Our intake valve material, NK-844, is equally unmatched, displaying over four times the ultimate tensile strength of the competition's best intake valve material at 1000?F.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Light weight, and high quality!
Size: 17" (2 x 4.0Ah)
I had concerns when we got this mower. It isn’t self propelled, and is smaller than our last one, but it really surprised me. We have a lot of yard, and are on a hill, which added to our concerns.
It is lightweight, which makes it really easy to use. You can raise and lower the deck with a couple of fingers. It even goes up the hill easily.
The only downside is the battery life. It comes with 2 24v batteries, and needs both to operate. They last about 30 min. My thought was to get a second set of batteries, but they cost as much as another mower.
I like the easy maintenance, and light weight, and that it has power and is quiet. Great mower.
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Reviewed in the United States on May 18, 2025
★★★★★ 5
Great electric mower for the price
Size: 17" (2 x 4.0Ah)
This was one of my favorite purchases this year. The November isn't noisy, looks much better than my previous electric lawnmower, and was surprisingly powerful for what it was. Out of the box, it was super easy to set up. My only gripe is that I wish the batteries would last a little longer. Currently, it lasts about 45 min per charge.
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Reviewed in the United States on November 22, 2025
★★★★★ 3
Lawnmower
Size: 17" (2 x 4.0Ah)
Bought this and two extra batteries. One battery turned out to be bad and won't charge. The lawnmower so far is great. Cuts good and very lightweight. Would recommend it, the batteries not so much.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
It actually does the job pretty well
Style: Lawn Edger/Tool Only
I floundered around for a few minutes, then figured out how to use it, and then made pretty good progress on my overgrown sidewalks. Yes, it uses up batteries but that's because it actually has enough power to do the job, unlike many "homeowner" tools. The handle is long enough so I'm not painfully bent over while using the tool, and it feels solid and stable. One thing I really appreciated is that it doesn't have a typical pointless, awkward "safety" interlock button that you're supposed to keep mashed down with your thumb the whole time - it's a comfortable one-finger trigger.
Another good 20v tool from Worx. I'm "in".
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Reviewed in the United States on June 10, 2024
★★★★★ 5
Quit spinning
Style: Lawn Edger/Tool Only
Worked great until it guilt working.
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Reviewed in the United States on November 14, 2025