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- USA
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- USA
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Power Stroke Products Performance Loaded Cylinder Head O-Ringed With HD Valve Springs 03-07 Ford 6.0The Power Stroke Products Performance Head O Ringed With Performance Springs is the ultimate upgrade for your 2003 2007 Ford 6. 0L Powerstroke, designed to maximize flow, durability, and power potential. This ported performance cylinder head flows an impressive 200 CFM, allowing your engine to support up to 1600HP with the right setup. Whether you're into drag racing, sled pulling, or street performance, this head delivers serious airflow and
The Power Stroke Products Performance Head O-Ringed With Performance Springs is the ultimate upgrade for your 2003-2007 Ford 6.0L Powerstroke, designed to maximize flow, durability, and power potential.
This ported performance cylinder head flows an impressive 200 CFM, allowing your engine to support up to 1600HP with the right setup. Whether you're into drag racing, sled pulling, or street performance, this head delivers serious airflow and performance gains. Each unit is precision machined for O-rings and assembled with brand new valves, seals, and performance 100lb valve springs, ensuring long lasting reliability, allowing you to push your truck to the limit with confidence. To ensure proper fitment, this head is available in two dowel sizes: 18mm dowel, which is typically found in 2003-2005 models, and 20mm dowel, which is typically used in 2006-2007 models. Model year ranges are suggested applications, so it is highly recommended to confirm your dowel size before ordering. For optimal performance and sealing, this head must be used with an MLS head gasket. Additionally, hot re-torque is required to maintain the warranty on all Power Stroke heads.
If you're serious about power, reliability, and performance, this O-ringed performance cylinder head is the upgrade your 6.0L Powerstroke needs. Unleash your Powerstroke's full potential today.
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
4.7 ★★★★★
Based on 558 reviews
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Product Reviews
★★★★★ 3
Ehh
Size: Medium, Color: Multicoloured E-(5-pack)
Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
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Reviewed in the United States on April 14, 2026
★★★★★ 5
They’re fantastic!!!!
Size: X-Large, Color: Multicoloured E-(5-pack)
My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly.
The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
My favorite underwear
Size: Medium, Color: Multicoloured C (5-pack)
Super comfortable!! They are soft and breathable. No pinching, no shifting, and relatively invisible in skirts, pants, and loose dresses. True to size. Excellent quality, holds up well. Only thing is that the wording on the front does come off after a few washes, so you have to differentiate the front from the back of the underwear by how high the seam comes up. I almost exclusively wear this underwear now, I love it!
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Incredible Comfort
Size: Large, Color: Multicoloured F (5-pack)
Amazing; I’ll be ordering more. Super soft, lightweight, smooth under clothes, incredible comfort! Best underwear! I ordered these because I’m tired of underwear lines when wearing biker shorts/leggings. Other boy shorts were too long or the bottom hem too thick and both of those issues left lines around my upper leg. THESE are *just right* - perfect length and fit. No panty lines on close fitting pants, comfortable under other pants and dresses, great with jumpsuits, and fit well under slip shorts with dresses.
NOTE: These take longer to dry, than similar clothes, in the dryer. No shrinking though.
SIZE: I ordered these in size L and they fit perfectly. A little snug when first on but they loosened up. For reference I’m 5’4” tall, about 175#, carry my weight in my hips and backside,wear size L sweats/pajamas/loose pants, size 12 jeans.
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Reviewed in the United States on September 23, 2025
★★★★★ 5
Full coverage and full comfort
Size: XX-Large, Color: Multicoloured C (5-pack)
These boyshort underwear are a dream. They’re very soft, very stretchy, and very comfortable. They do not shrink when they’re washed. They’re heavy enough to make you feel like you have something covering you for discretion, but light enough to wear under any type of fabric. I have wide hips and I’m older so I don’t have a tight perky butt anymore. Most underwear tend to either ride up on me or become very uncomfortable. These stay where you put them. And they come all the way up to your waist so that there is no panty line whatsoever. The waist line is soft and comfortably. It does not dig in. They do not ride up and drive you crazy they stay where you put them. I would recommend them to anyone young or old. I have tried so many different styles and materials to find underwear that’s actually comfortable. These are the absolute best I have tried in five years. I just threw all the rest of them out.
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Reviewed in the United States on April 8, 2026
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