Factory Mast LT Cylinder Head - Dual Valve Spring & Titanium Retainer Kit - 0.700 Lift

Factory Mast LT Cylinder Head - Dual Valve Spring & Titanium Retainer Kit - 0.700 Lift

Marsoni

M251S

$475.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Factory Mast LT Cylinder Head - Dual Valve Spring & Titanium Retainer Kit - 0.700 LiftDual Spring Kit for High Lift LT Cylinder Head Factory Mast or OE GM Casting with Factory Guide Size Specs: Rated Valve Lift 0. 700 inches Installed Height 1. 900 @ 150 lbs Spring Rate: 470# in Solid Height 1. 000 Spring OD 1. 290" Spring ID 0. 680" Works well for Limited travel Hydraulic Lifter, or Light Duty Solid Roller Rated for Light to Moderate Endurance Kit includes: Dual Valve Springs Titanium Retainers Chrome Moly Spring Seats Valve Stem

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I was dealing with night sweats almost every night. Waking up overheated, flipping my pillow over constantly, just uncomfortable and restless. It was starting to mess with my sleep in a real way. Since switching to this cooling pillowcase (and pairing it with a cooling blanket), it’s been a completely different experience. I’m actually staying cool through the night and not waking up soaked or irritated. The fabric feels cool to the touch right away and doesn’t trap heat like a regular pillowcase. It’s smooth, comfortable, and still feels good after washing. Not stiff or weird like some “cooling” materials can be. Is it magic? No. But does it noticeably reduce overheating and help you sleep better? Absolutely. If you run hot at night or deal with night sweats, this is one of those small upgrades that makes a big difference. I wish I had bought it sooner.

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Reviewed in the United States on March 19, 2026

Verified Purchase

Amazing Sally

Massapequa, US

★★★★★ 5

so far so good

I was surprised at this pair of pillow cases only because the material seemed impossible to be cooling - it's that weird polyester blend. So far I have not awoken feeling sweaty around my face and scalp. I don't recall what I originally paid but I think it is great value for money! If you are sensitive to out of the box smell, I washed mine first and it didn't impede on the efficacy of the cooling!

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Reviewed in the United States on April 28, 2026

Verified Purchase

Devin Hill

West Palm Beach, US

★★★★★ 5

It’s like sleeping on a beach in San Vito lo Capo

Italian voice: I’m a big meaty fella so I put off a lot of heat ya hear. These pillow cases have changed my life. One moment they’re hot and the next you flip them and you’re blasted with a blast of ice cool what it feels like to chew 5 gum feeling capeesh. I would reccomend these pillow cases to even my grandma. If ya wanta get a rest so good that it feels like ya been sleeping with the fishes get these pillow cases, they’re the real deal. Then stop at Pauline’s joint and grab a slice of pizza say Vinnie sent ya. Anyways I gotta go my wife’s cooking up a mean lasgna and we’re gonna watch the dodgers. Let me know how these treat ya I guarantee they will change your life. Vinnie out

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Reviewed in the United States on February 15, 2026

Verified Purchase

Amazon Customer

Lexington, US

★★★★★ 4

Soft "cooling" case.

Yes it is very cool when you lay on it. It doesn't stay cold though. Within a minute or 2 to whatever your temp is.

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Reviewed in the United States on December 25, 2025

Verified Purchase

CountryGal

Omaha, US

★★★★★ 5

Great for hair and skin. Great buy.

These pillow cases are great for my hair and skin. They look good, hold up well in the washer and dryer, and the price is great. They are cooling. Of course I wish they could be more cooling, but honestly I'm not sure that's even possible. Great pillow cases. Already bought more for other heads. Would buy again.

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Reviewed in the United States on March 11, 2026